Use of a Broken or Risky Cryptographic Algorithm Affecting libcjose-devel package, versions <0.6.1-150100.4.6.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.2% (58th percentile)

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  • Snyk IDSNYK-SLES153-LIBCJOSEDEVEL-5830098
  • published9 Aug 2023
  • disclosed8 Aug 2023

Introduced: 8 Aug 2023

CVE-2023-37464  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 libcjose-devel to version 0.6.1-150100.4.6.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcjose-devel package and not the libcjose-devel package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

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).

CVSS Scores

version 3.1