CVE-2024-23323: envoy DoS — Fix

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-1176 CWE-1176

Affected Products

Vendor	Product	Versions
envoyproxy	envoy	1.26.0 — 1.26.7
envoyproxy	envoy	1.27.0 — 1.27.3
envoyproxy	envoy	1.28.0 — 1.28.1
envoyproxy	envoy	1.29.0 — 1.29.1

References

Advisories & Patches

https://github.com/envoyproxy/envoy/commit/71eeee8f0f0132f39e402b0ee23b361ee2f4e645 https://github.com/envoyproxy/envoy/security/advisories/GHSA-x278-4w4x-r7ch https://github.com/envoyproxy/envoy/commit/71eeee8f0f0132f39e402b0ee23b361ee2f4e645 https://github.com/envoyproxy/envoy/security/advisories/GHSA-x278-4w4x-r7ch

Frequently Asked Questions

What is CVE-2024-23323? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2024-23323? +

CVE-2024-23323 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-23323? +

CVE-2024-23323 affects products from envoyproxy, specifically: envoy. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-23323? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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