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CVE-2023-37464

8.6 · HIGH

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE).

Published Jul 14, 2023CWE-327EPSS 0.71%

Overview

CVE-2023-37464 is a high-severity vulnerability. It was published on July 14, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm (e.g. AES CBC).

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

Refdatatracker.ietf.org/doc/html/rfc7518#section-4.7GitHubgithub.com/OpenIDC/cjose/commit/7325e9a5e71e2fc0e350487ecac7d84acdf0ed5eGitHubgithub.com/OpenIDC/cjose/releases/tag/v0.6.2.2GitHubgithub.com/OpenIDC/cjose/security/advisories/GHSA-3rhg-3gf2-6xgjReflists.debian.org/debian-lts-announce/2023/08/msg00002.htmlReflists.fedoraproject.org/archives/list/[email protected]/message/DFWAPMYYVBO2U65HPYDTBEKNSXG4TP5C/Reflists.fedoraproject.org/archives/list/[email protected]/message/LCQJXKDPCWCXB2V4JMQ3UWYJ4UIBPUW6/Reflists.fedoraproject.org/archives/list/[email protected]/message/PTZHOVGY7AHGNMEY245HK4Q36AMA53AL/Refwww.debian.org/security/2023/dsa-5472Refdatatracker.ietf.org/doc/html/rfc7518#section-4.7

How CyberStrike helps

Frequently asked questions

What is CVE-2023-37464?

CVE-2023-37464 is a high-severity vulnerability. It was published on July 14, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2023-37464?

This vulnerability has a CVSS 3.1 base score of 8.6, 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-2023-37464?

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-2023-37464?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-37464 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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