Mozilla Firefox URI NULL byte filtering command execution
| mozilla-uri-null-command-execution (38321) |  High Risk |
Description:
Mozilla Firefox could allow a remote attacker to execute arbitrary commands on the system, caused by improper filtering of encoded NULL byte characters (%00) in certain Uniform Resource Identifiers (URIs), including the mailto, nntp, news, snews, and telnet protocol handlers on Microsoft Windows systems. By persuading a victim to visit a specially-crafted Web page that calls one of the vulnerable protocol handlers, a remote attacker could exploit this vulnerability to inject and execute arbitrary shell commands on the system.
Platforms Affected:
- Mozilla, Firefox 2.0.0.5
- Mozilla, Firefox 3.0 Alpha
Remedy:
Upgrade to the latest version of Firefox (2.0.0.9 or later), available from the Mozilla Web site. See References.
Consequences:
Gain Access
References:
- Billy (BK) Rios Blog, Tuesday, July 24th, 2007, Remote Command Execution in FireFox et al at http://xs-sniper.com/blog/2007/07/24/remote-command-execution-in-firefox-2005/.
- Billy (BK) Rios Blog, Tuesday, July 24th, 2007, Remote Command Exec (FireFox 2.0.0.5 et al) at http://xs-sniper.com/blog/remote-command-exec-firefox-2005/.
- Bugzilla@Mozilla - Bug 389580, (CVE-2007-4041) - some schemes with %00 launch unexpected handlers on windows at https://bugzilla.mozilla.org/show_bug.cgi?id=389580.
- Mozilla Web site, Mozilla Download at http://www.mozilla.com/en-US/products/download.html?product=firefox-2.0.0.9-02&os=win&lang=en-US.
- BID-25053: Multiple Browser URI Handlers Command Injection Vulnerabilities
- CVE-2007-4041: Multiple argument injection vulnerabilities in Mozilla Firefox 2.0.0.5 and 3.0alpha allow remote attackers to execute arbitrary commands via a NULL byte (%00) and shell metacharacters in a (1) mailto, (2) nntp, (3) news, (4) snews, or (5) telnet URI, a similar issue to CVE-2007-3670.
- US-CERT VU#783400: Mozilla Firefox URI filtering vulnerability
Reported:
Jul 24, 2007
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