Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2023-40703
CVE-2023-40703:
Mattermost vulnerability analysis and mitigation
Overview
Mattermost Boards contains a vulnerability (CVE-2023-40703) where the application fails to properly limit characters allowed in different fields of a block. This vulnerability was discovered and disclosed on November 27, 2023, affecting Mattermost versions up to 7.8.12, 8.0.0 to 8.1.3, and 9.0.0 to 9.1.0 (NVD).
Technical details
The vulnerability is classified as an Uncontrolled Resource Consumption issue (CWE-400). It received a CVSS v3.1 base score of 7.5 (HIGH) from NIST with a vector string of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, while Mattermost assessed it with a score of 4.3 (MEDIUM) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L (NVD).
Impact
When exploited, this vulnerability can lead to Denial of Service through excessive resource consumption. The attack can be executed by patching the field of a block using a specially crafted string (NVD).
Mitigation and workarounds
Affected users should upgrade to the latest version of Mattermost that contains the security fix. The vulnerability has been addressed in subsequent releases after the affected versions (Mattermost Security).
Additional resources
Source: This report was generated using AI
Related Mattermost vulnerabilities:
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