SUSE update for cjose

1) Use of a broken or risky cryptographic algorithm

EUVDB-ID: #VU78844

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-37464

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to an error in the AES GCM decryption routine that uses the Tag length from the actual Authentication Tag provided in the JWE. A remote attacker can provide a truncated Authentication Tag and to modify the JWE accordingly.

Mitigation

Update the affected package cjose to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 12: SP4 - SP5

SUSE Linux Enterprise Server 12 SP4 LTSS: 12-SP4

SUSE Linux Enterprise Server 12 SP4 ESPOS: 12-SP4

SUSE Linux Enterprise Server 12: SP4 - SP5

SUSE Linux Enterprise High Performance Computing 12: SP4 - SP5

SUSE OpenStack Cloud Crowbar: 9

SUSE OpenStack Cloud: 9

cjose-debugsource: before 0.6.1-7.5.1

libcjose0-debuginfo: before 0.6.1-7.5.1

libcjose0: before 0.6.1-7.5.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233030-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.