Simple Machines Forum PHPSessionID Session Fixation Vulnerability

TITLE: Simple Machines Forum PHPSessionID Session Fixation Vulnerability
CLASS: Design Error
CVE:
REMOTE: Yes
LOCAL: No
PUBLISHED: Jun 14 2007 12:00AM
UPDATE: Jun 15 2007 05:19AM
CREDIT: David Vieira-Kurz is credited with the discovery of this vulnerability.
VULNERABLE:

Simple Machines SMF 1.1.2
NOT VULNERABLE:

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Discussion

Simple Machines Forum is prone to a session-fixation vulnerability.

An attacker can exploit this issue to gain unauthorized access to the affected application.

NOTE: This issue can be exploited only if "session.use_transid" is enabled in the 'php.ini' file.

Simple Machines Forum 1.1.2 is vulnerable; other versions may also be affected.

Exploit

To exploit this issue, an attacker must entice an unsuspecting user to follow a malicious URI. Then, the attacker can use a browser to gain unauthorized access to a vulnerable application.

Solution

Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: mailto:vuldb@securityfocus.com.

References

References:

PhpLog

BNLug Benevento Linux Users Group