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CVE-2018-6343

7.5 · HIGH

Proxygen fails to validate that a secondary auth manager is set before dereferencing it.

Published Dec 31, 2018CWE-476EPSS 0.83%

Overview

CVE-2018-6343 is a high-severity vulnerability. It was published on December 31, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fizz (TLS 1.3) transport. This issue affects Proxygen releases starting from v2018.10.29.00 until the fix in v2018.11.19.00.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/facebook/proxygen/commit/0600ebe59c3e82cd012def77ca9ca1918da74a71GitHubgithub.com/facebook/proxygen/commit/0600ebe59c3e82cd012def77ca9ca1918da74a71

How CyberStrike helps

Frequently asked questions

What is CVE-2018-6343?

CVE-2018-6343 is a high-severity vulnerability. It was published on December 31, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2018-6343?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-6343?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-6343?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-6343 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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