Mattermost up to 9.5.7/9.10.0/9.11.0 ElasticSearch Configuration /dev/zero CA path resource consumption

Summaryinfo

A vulnerability marked as problematic has been reported in Mattermost up to 9.5.7/9.10.0/9.11.0. The affected element is an unknown function of the file /dev/zero of the component ElasticSearch Configuration Handler. This manipulation of the argument CA path causes resource consumption. This vulnerability is registered as CVE-2024-39810. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Mattermost up to 9.5.7/9.10.0/9.11.0. Affected by this vulnerability is an unknown code of the file /dev/zero of the component ElasticSearch Configuration Handler. The manipulation of the argument CA path with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

Mattermost versions 9.5.x <= 9.5.7 and 9.10.x <= 9.10.0 fail to time limit and size limit the CA path file in the ElasticSearch configuration which allows a System Role with access to the Elasticsearch system console to add any file as a CA path field, such as /dev/zero and, after testing the connection, cause the application to crash.

The weakness was published by Doyensec. The advisory is shared at mattermost.com. This vulnerability is known as CVE-2024-39810 since 08/20/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 209295 (Mattermost Server 9.5.x < 9.5.8 / 9.10.x < 9.10.1 (MMSA-2024-00359)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.5.8, 9.10.1 or 9.11.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (209295). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Groupware Software

Name

• Mattermost

Version

• 9.0
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5
• 9.5.0
• 9.5.1
• 9.5.2
• 9.5.3
• 9.5.4
• 9.5.5
• 9.5.6
• 9.5.7
• 9.6
• 9.7
• 9.8
• 9.9
• 9.10
• 9.10.0
• 9.11.0

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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