CVE-2024-23323

Excessive CPU usage when URI template matcher is configured using regex in Envoy

State: Published
Severity: 4.3 Medium
Published: Feb 9, 2024
Updated: Aug 1, 2024
Reserved: Jan 15, 2024

Description

Envoy is a high-performance edge/middle/service proxy. The regex expression is compiled for every request and can result in high CPU usage and increased request latency when multiple routes are configured with such matchers. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption
CWE-1176 Inefficient CPU Computation

Affected Products

Product	Versions
envoyenvoyproxy	>= 1.29.0, < 1.29.1Affected >= 1.28.0, < 1.28.1Affected >= 1.27.0, < 1.27.3Affected < 1.26.7Affected

References

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