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TITLE:
TWiki "rev" Shell Command Injection Vulnerability

SECUNIA ADVISORY ID:
SA16820

VERIFY ADVISORY:
http://secunia.com/advisories/16820/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
TWiki
http://secunia.com/product/4248/

DESCRIPTION:
A vulnerability has been reported in TWiki, which can be exploited by
malicious people to compromise a vulnerable system.

Input passed to the "rev" parameter in
"/cgi-bin/view/Main/TWikiUsers" isn't properly sanitised before being
used in a shell expression. This can be exploited to inject arbitrary
shell commands via special shell meta characters.

The vulnerability has been reported in versions
TWikiRelease02Sep2004, TWikiRelease01Sep2004, TWikiRelease01Feb2003,
TWikiRelease01Dec2001, and TWikiRelease01Dec2000.

SOLUTION:
Apply patches.
http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithRev

PROVIDED AND/OR DISCOVERED BY:
The vendor credits B4dP4nd4.

ORIGINAL ADVISORY:
http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithRev

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
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