A vulnerability was found in Jenzabar JICS up to 9.0.1 Patch 2/9.1.2 Patch 1/9.2.2 Patch 7. It has been rated as problematic. Affected by this issue is an unknown part of the component Session Cookie Handler. The manipulation with an unknown input 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. CVE summarizes:

Jenzabar JICS (aka Internet Campus Solution) before 9.0.1 Patch 3, 9.1 before 9.1.2 Patch 2, and 9.2 before 9.2.2 Patch 8 has session cookies that are a deterministic function of the username. There is a hard-coded password to supply a PBKDF feeding into AES to encrypt a username and base64 encode it to a client-side cookie for persistent session authentication. By knowing the key and algorithm, an attacker can select any username, encrypt it, base64 encode it, and save it in their browser with the correct JICSLoginCookie cookie format to impersonate any real user in the JICS database without the need for authenticating (or verifying with MFA if implemented).

The weakness was presented 05/19/2020. This vulnerability is handled as CVE-2020-8434 since 01/29/2020. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

Applying the patch 9.0.1 Patch 3/9.1.2 Patch 2/9.2.2 Patch 8 is able to eliminate this problem.

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• Jenzabar JICS

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• 9.0.1 Patch 2
• 9.1.2 Patch 1
• 9.2.2 Patch 7

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