Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2023-2193
CVE-2023-2193:
Mattermost vulnerability analysis and mitigation
Overview
Mattermost OAuth2 vulnerability (CVE-2023-2193) was discovered and disclosed on April 20, 2023. The vulnerability affects Mattermost's OAuth2 implementation where the system fails to properly invalidate existing authorization codes when an OAuth2 app is deauthorized (NVD, CVE).
Technical details
The vulnerability stems from a flaw in Mattermost's OAuth2 implementation where authorization codes remain valid even after an OAuth2 app is deauthorized. This oversight allows an attacker who possesses an authorization code to generate an access token even after the app has been deauthorized (NVD).
Impact
If exploited, this vulnerability could allow attackers with possession of an authorization code to generate access tokens even after the associated OAuth2 app has been deauthorized, potentially leading to unauthorized access to Mattermost resources (NVD).
Mitigation and workarounds
Users should ensure they are running the latest version of Mattermost that includes the fix for this vulnerability. The issue has been addressed in subsequent releases of the platform (Mattermost Security).
Additional resources
Source: This report was generated using AI
Related Mattermost vulnerabilities:
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