A vulnerability, which was classified as critical, has been found in Apache2Triad 1.5.4. Affected by this issue is an unknown functionality. The manipulation of the argument PHPSESSID as part of a Parameter leads to a session fixiation vulnerability. Using CWE to declare the problem leads to CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Session fixation vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack web sessions via the PHPSESSID parameter.

The bug was discovered 08/21/2017. The weakness was published 08/23/2017 by John Page (hyp3rlinx) (Website). The advisory is shared for download at hyp3rlinx.altervista.org. This vulnerability is handled as CVE-2017-12965 since 08/19/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (42520) and SecurityFocus (BID 100447†). Similar entries are available at VDB-105681 and VDB-105682.

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• Apache2Triad

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• 1.5.4

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