CVE-2024-23323

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

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory github.com Vendor Advisory github.com
Affected: envoyproxy envoy
Published at:
Updated at:

References

Link Tags
https://github.com/envoyproxy/envoy/security/advisories/GHSA-x278-4w4x-r7ch vendor advisory
https://github.com/envoyproxy/envoy/commit/71eeee8f0f0132f39e402b0ee23b361ee2f4e645 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-23323?
CVE-2024-23323 has been scored as a medium severity vulnerability.
How to fix CVE-2024-23323?
To fix CVE-2024-23323, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-23323 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-23323 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-23323?
CVE-2024-23323 affects envoyproxy envoy.
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