Vulnerability Description
Envoy is an open source edge and service proxy, designed for cloud-native applications. Sending a locally generated response must stop further processing of request or response data. Envoy tracks the amount of buffered request and response data and aborts the request if the amount of buffered data is over the limit by sending 413 or 500 responses. However when the buffer overflows while response is processed by the filter chain the operation may not be aborted correctly and result in accessing a freed memory block. If this happens Envoy will crash resulting in a denial of service.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Envoy | < 1.18.6 |
Related Weaknesses (CWE)
References
- https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6PatchThird Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-h69p-g6xg-mhhhIssue TrackingThird Party Advisory
- https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6PatchThird Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-h69p-g6xg-mhhhIssue TrackingThird Party Advisory
FAQ
What is CVE-2021-43825?
CVE-2021-43825 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Envoy is an open source edge and service proxy, designed for cloud-native applications. Sending a locally generated response must stop further processing of request or response data. Envoy tracks the ...
How severe is CVE-2021-43825?
CVE-2021-43825 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43825?
Check the references section above for vendor advisories and patch information. Affected products include: Envoyproxy Envoy.