Opencast up to 13.9/14.2 Video Capture allocation of resources

Summaryinfo

A vulnerability marked as critical has been reported in Opencast up to 13.9/14.2. This affects an unknown part of the component Video Capture Handler. Performing a manipulation results in allocation of resources. This vulnerability is cataloged as CVE-2024-52797. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Opencast up to 13.9/14.2. It has been classified as critical. This affects an unknown code of the component Video Capture Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on availability. The summary by CVE is:

Opencast is free and open source software for automated video capture and distribution. First noticed in Opencast 13 and 14, Opencast's Elasticsearch integration may generate syntactically invalid Elasticsearch queries in relation to previously acceptable search queries. From Opencast version 11.4 and newer, Elasticsearch queries are retried a configurable number of times in the case of error to handle temporary losses of connection to Elasticsearch. These invalid queries would fail, causing the retry mechanism to begin requerying with the same syntactically invalid query immediately, in an infinite loop. This causes a massive increase in log size which can in some cases cause a denial of service due to disk exhaustion. Opencast 13.10 and Opencast 14.3 contain patches which address the base issue, with Opencast 16.7 containing changes which harmonize the search behaviour between the admin UI and external API. Users are strongly recommended to upgrade as soon as possible if running versions prior to 13.10 or 14.3. While the relevant endpoints require (by default) `ROLE_ADMIN` or `ROLE_API_SERIES_VIEW`, the problem queries are otherwise innocuous. This issue could be easily triggered by normal administrative work on an affected Opencast system. Those who run a version newer than 13.10 and 14.3 and see different results when searching in their admin UI vs your external API or LMS, may resolve the issue by upgrading to 16.7. No known workarounds for the vulnerability are available.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2024-52797 since 11/15/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 13.10, 14.3 or 16.7 eliminates this vulnerability.

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Productinfo

Name

• Opencast

Version

• 13.0
• 13.1
• 13.2
• 13.3
• 13.4
• 13.5
• 13.6
• 13.7
• 13.8
• 13.9
• 14.0
• 14.1
• 14.2

Website

• Product: https://github.com/opencast/opencast/

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