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Vulnerability DatabaseCVE-2021-29433

CVE-2021-29433: 
Python vulnerability analysis and mitigation

Overview

CVE-2021-29433 is a vulnerability discovered in matrix-sydent versions 2.2.0 and earlier, disclosed on April 15, 2021. The vulnerability affects the endpoints used to confirm third-party identifiers in the Matrix identity server implementation. This security issue was patched in version 2.3.0 (GitHub Advisory).

Technical details

The vulnerability stems from missing input validation of parameters on the endpoints used to confirm third-party identifiers. The issue was classified as CWE-20 (Improper Input Validation) with a Low severity rating. The fix involved implementing validation improvements for client_secret and email parameters, including setting maximum length restrictions for email addresses to 500 characters (GitHub Commit).

Impact

The vulnerability could lead to excessive use of disk space and memory, potentially resulting in resource exhaustion and denial of service conditions on affected systems (GitHub Advisory).

Mitigation and workarounds

The vulnerability was patched in matrix-sydent version 2.3.0. Users should upgrade to this version or later to address the issue. No workarounds were available for unpatched systems (GitHub Advisory).

Additional resources

Source: This report was generated using AI

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