CVE-2023-37464

Summary

CVE-2023-37464 is a vulnerability affecting the OpenIDC/cjose library, which implements the Javascript Object Signing and Encryption (JOSE) in C. The library's AES-GCM decryption function incorrectly processes the Authentication Tag length. Instead of using the fixed length of 16 octets required by the specification, it relies on the actual length provided in the JWE. An attacker can exploit this flaw by providing a truncated Authentication Tag and subsequently modify the JWE. To mitigate this risk, users should upgrade to version 0.6.2.2 or higher. As an alternative, they can replace AES-GCM encryption with another algorithm, such as AES-CBC.

Prevent cyber attacks with Recorded Future by prioritizing and patching critical vulnerabilities being exploited by threat actors targeting your industry. Book your demo to learn more.