From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Apr 04 2007 - 17:17:05 CDT

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TITLE:
Winmail Server "sid" Directory Traversal Vulnerability

SECUNIA ADVISORY ID:
SA24700

VERIFY ADVISORY:
http://secunia.com/advisories/24700/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
From remote

SOFTWARE:
Winmail Server 4.x
http://secunia.com/product/4370/

DESCRIPTION:
rgod has reported a vulnerability in Winmail, which potentially can
be exploited by malicious people to bypass certain security
restrictions.

Input passed to the "sid" parameter is not properly verified before
being used within inc/class.session.php. This can be exploited via
directory traversal attacks to use temporary session files and allow
an attacker to access certain parts of the administrative section and
e.g. add a super user.

The vulnerability is reported in version 4.4 build 1124. Other
versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly verified.

PROVIDED AND/OR DISCOVERED BY:
rgod

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/3622

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