From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Feb 09 2004 - 05:22:40 CST

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TITLE:
OpenJournal Authentication Bypass Vulnerability

SECUNIA ADVISORY ID:
SA10808

VERIFY ADVISORY:
http://www.secunia.com/advisories/10808/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
From remote

SOFTWARE:
OpenJournal 2.x

DESCRIPTION:
Tri Huynh has discovered a vulnerability in OpenJournal, which can be
exploited by malicious people to bypass the user authentication.

The vulnerability is caused due to an error when handling certain
user input supplied to the "uid" parameter. This can be exploited to
access the administrative functionality directly by supplying a NULL
byte.

The original advisory included an example, which adds a new user:
http://[victim]/cgi-bin/oj.cgi?db=default&uid=%00&userid=hacker&auth=adduser

The vulnerability has been reported in version 2.05 and prior.

SOLUTION:
Update to version 2.06.
http://www.grohol.com/downloads/oj/

PROVIDED AND/OR DISCOVERED BY:
Tri Huynh, SentryUnion.

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