What is CVE-2024-53271?

CVE-2024-53271 is a high-severity vulnerability in Envoyproxy Envoy, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.1/10. Published 2024-12-18.

How severe is CVE-2024-53271?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Envoyproxy Envoy

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.

EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.

Affected products

Envoyproxy Envoy — versions >= 1.31.0, < 1.31.5, >= 1.32.0, < 1.32.3

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2024-53271?: CVE-2024-53271 is a high-severity vulnerability in Envoyproxy Envoy, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.1/10. Published 2024-12-18.
How severe is CVE-2024-53271?: High severity. CVSS v3 base score is 7.1 out of 10.