CVE-2021-29433

Denial of service (via resource exhaustion) due to improper input validation

Published Apr 15, 2021 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. A patch for the vulnerability is in version 2.3.0. No workarounds are known to exist.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-0122 ### Impact Missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. ### Patches Fixed by 3175fd3. ### Workarounds There are no known workarounds. ### References n/a ### For more information If you have any questions or comments about this advisory, email us at security@matrix.org.
Github GHSA Github GHSA GHSA-pw4v-gr34-2553 Sydent DoS (via resource exhaustion) due to improper input validation
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 3, 2024, 10:02 PM
Reserved
Mar 30, 2021, 12:00 AM
Status
Modified
Published
Apr 15, 2021, 6:15 PM
Modified
Jun 17, 2026, 3:47 AM