CVE-2024-53271: envoy — Exploit & Fix

Description

Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions envoy does not properly handle http 1.1 non-101 1xx responses. This can lead to downstream failures in networked devices. This issue has been addressed in versions 1.31.5 and 1.32.3. Users are advised to upgrade. There are no known workarounds for this issue.

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CVSS v3.1 Score

7.1

HIGH

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

Weakness Type (CWE)

CWE-670 CWE-670

Affected Products

Vendor	Product	Versions
envoyproxy	envoy	1.31.0 — 1.31.5
envoyproxy	envoy	1.32.0 — 1.32.3

References

Advisories & Patches

https://github.com/envoyproxy/envoy/commit/da56f6da63079baecef9183436ee5f4141a59af8

Exploits

https://github.com/envoyproxy/envoy/security/advisories/GHSA-rmm5-h2wv-mg4f https://github.com/envoyproxy/envoy/security/advisories/GHSA-rmm5-h2wv-mg4f

Frequently Asked Questions

What is CVE-2024-53271? +

Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions envoy does not properly handle http 1.1 non-101 1xx responses. This can lead to downstream failures in networked devices. This issue has been addressed in versions 1.31.5 and 1.32.3. Users are advised to upgrade. There are no known workarounds for this issue. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2024-53271? +

CVE-2024-53271 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-53271? +

CVE-2024-53271 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-2024-53271? +

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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