CVE-2023-5967

Summary

CVE-2023-5967 is a vulnerability affecting Mattermost, an open-source team collaboration platform. The issue lies in the Calls plugin, which fails to verify User Agent headers on incoming requests. An attacker can exploit this flaw by sending a malicious request without a User Agent header, leading to a panic and crash of the Calls plugin. This vulnerability can potentially be used for denial-of-service attacks or to gain unauthorized access to sensitive information. It is recommended that users of Mattermost update their Calls plugin to the latest version to mitigate this risk.

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