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).
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Affected Vendors & Products
References
History
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-07-14T20:25:18.264Z
Updated: 2024-08-02T17:16:30.233Z
Reserved: 2023-07-06T13:01:36.997Z
Link: CVE-2023-37464
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-07-14T21:15:08.903
Modified: 2023-09-15T22:15:13.967
Link: CVE-2023-37464
Redhat