A vulnerability was found in Cisco Meeting Server (Unified Communication Software) (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the component Web-based Management Interface. The manipulation with an unknown input leads to a session fixiation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the session identification management functionality of the web-based management interface for Cisco Meeting Server could allow an unauthenticated, local attacker to hijack a valid user session identifier, aka Session Fixation. The vulnerability exists because the affected application does not assign a new session identifier to a user session when a user authenticates to the application. An attacker could exploit this vulnerability by using a hijacked session identifier to connect to the application through the web-based management interface. A successful exploit could allow the attacker to hijack an authenticated user's browser session. Cisco Bug IDs: CSCvi23787.

The bug was discovered 06/20/2018. The weakness was presented 06/21/2018 as cisco-sa-20180620-cms-sf / CSCvi23787 as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2018-0359 since 11/27/2017. Local access is required to approach this attack. The successful exploitation needs a authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/28/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38741 (Cisco Meeting Server Session Fixation Vulnerability(cisco-sa-20180620-cms-sf)).

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

See VDB-255904, VDB-258315, VDB-259213 and VDB-259215 for similar entries.

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• Unified Communication Software

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• Cisco

Name

• Meeting Server

License

• commercial

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