What is the CVSS score of CVE-2024-53271?

CVE-2024-53271 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2024-53271?

Yes, a public proof-of-concept exploit is available for CVE-2024-53271. Prioritise patching immediately. EPSS: 0.6%.

Is there a patch available for CVE-2024-53271?

Yes, a patch is available for CVE-2024-53271. Update the affected software to the latest version immediately.

Envoy CVE-2024-53271

HIGH

Always-Incorrect Control Flow Implementation (CWE-670)

2024-12-18 security-advisories@github.com

Information Disclosure Envoy

7.1

CVSS 3.1 · Vendor: github

Severity by source

Vendor (github) PRIMARY

7.1 HIGH

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

Primary rating from Vendor (github) · only source for this CVE.

CVSS VectorVendor: github

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Dec 18, 2024 - 20:15 cve.org

HIGH 7.1

DescriptionCVE.org

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.

AnalysisAI

Envoy is a cloud-native high-performance edge/middle/service proxy. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-670. 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. Affected products include: Envoyproxy Envoy.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.