CVE-2021-29433: Denial of service (via resource exhaustion) due to improper input validation
First published: Thu Apr 15 2021(Updated: )
### 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. ### For more information If you have any questions or comments about this advisory, email us at security@matrix.org.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Matrix Sydent | <2.3.0 | |
| pip/matrix-sydent | <2.3.0 | 2.3.0 |
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Reference Links
- https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da
- https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553
- https://nvd.nist.gov/vuln/detail/CVE-2021-29433
- https://github.com/pypa/advisory-database/tree/main/vulns/matrix-sydent/PYSEC-2021-24.yaml
- https://pypi.org/project/matrix-sydent
- https://github.com/advisories/GHSA-pw4v-gr34-2553 (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID is CVE-2021-29433.
What is the affected software in this vulnerability?
The affected software is Matrix Sydent version 2.2.0 and prior.
What is the severity of CVE-2021-29433?
The severity of CVE-2021-29433 is medium with a CVSS score of 4.3.
How does CVE-2021-29433 affect the system?
CVE-2021-29433 can cause excessive use of disk space and memory leading to resource exhaustion in Matrix Sydent.
Is there a patch available for CVE-2021-29433?
Yes, a patch for CVE-2021-29433 is available.
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