UpHeron
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Servers and applications

CVE-2023-35943

CORS filter segfault when origin header is removed

Severity
High 7.5
Published
25 Jul 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.23.12, 1.24.10, 1.25.9, 1.26.4
Also known as
GHSA-mc6h-6j9x-v3gq
Sources
NVD, Project advisories (GitHub)

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…

Affected software

SoftwareAffected versions
EnvoyServers and applications · cpe:a:envoyproxy:envoy
  • From 1.23.0 before 1.23.12
  • From 1.24.0 before 1.24.10
  • From 1.25.0 before 1.25.9
  • From 1.26.0 before 1.26.4
EnvoyServers and applications · github:envoyproxy/envoy
  • Every version before 1.23.12

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-35943
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-35943
  • GitHub Advisory Database https://github.com/advisories/GHSA-mc6h-6j9x-v3gq
  • github.com https://github.com/envoyproxy/envoy/security/advisories/GHSA-mc6h-6j9x-v3gq