Vulnerability Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the `origin` header in the Envoy configuration.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Envoy | >= 1.23.0, < 1.23.12 |
Related Weaknesses (CWE)
References
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-mc6h-6j9x-v3gqExploitThird Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-mc6h-6j9x-v3gqExploitThird Party Advisory
FAQ
What is CVE-2023-35943?
CVE-2023-35943 is a vulnerability with a CVSS score of 6.3 (MEDIUM). Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy whe...
How severe is CVE-2023-35943?
CVE-2023-35943 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-35943?
Check the references section above for vendor advisories and patch information. Affected products include: Envoyproxy Envoy.