Metasploit defanged variable bypass security
| metasploit-defanged-bypass-security (21705) |  High Risk |
Description:
Metasploit Framework could allow an attacker to bypass specific security restrictions, caused by a vulnerability in the StateToOption() function in msfweb. The _Defanged environment variable can be overwritten with user-supplied input. A remote attacker could exploit this vulnerability to bypass defanged mode restrictions and execute vulnerability checks and exploits from the vulnerable system.
Platforms Affected:
- Metasploit Project, Metasploit Framework prior to 2.4
Remedy:
Upgrade to the latest version of Metasploit Framework (2.7 or later), available from the Metasploit Framework Web site. See References.
Consequences:
Bypass Security
References:
- BugTraq Mailing List, 2005-08-17 18:49:23, NOVL-2005010098073 GroupWise Password Caching at http://marc.theaimsgroup.com/?l=bugtraq&m=112431139225724&w=2.
- Metasploit Framework Advisory- Sun, 24 Jul 2005 16:49:31 -0500 , [framework] msfweb "refang" security update at http://metasploit.com/archive/framework/msg00469.html.
- Metasploit Framework Web site, The Metasploit Project at http://www.metasploit.com/projects/Framework/.
- BID-14431: Metasploit Framework Unspecified Vulnerability
- BID-14455: Metasploit Framework MSFWeb Defanged Mode Restriction Bypass Vulnerability
- CVE-2005-2482: The StateToOptions function in msfweb in Metasploit Framework 2.4 and earlier, when running with the -D option (defanged mode), allows attackers to modify temporary environment variables before the _Defanged environment option is checked when processing the Exploit command.
- OSVDB ID: 18495: Metasploit Framework msfweb Defanged Mode Remote Bypass
- SA16318: Metasploit Framework "defanged" Mode Bypass Vulnerability
Reported:
Aug 03, 2005
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