CVE-2023-35942

Envoy's gRPC access log crash caused by the listener draining

State: Published
Severity: 6.5 Medium
Published: Jul 25, 2023
Updated: Oct 24, 2024
Reserved: Jun 20, 2023

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, gRPC access loggers using listener's global scope can cause a `use-after-free` crash when the listener is drained. 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, disable gRPC access log or stop listener update.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
envoyenvoyproxy	>= 1.26.0, < 1.26.4Affected >= 1.25.0, < 1.25.9Affected >= 1.24.0, < 1.24.10Affected < 1.23.12Affected

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-69vr-g55c-v2v4

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