Security update for perl-Authen-SASL, perl-Crypt-URandom SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:03088-1 Final 1 1 2025-09-05T10:36:26Z current 2025-09-05T10:36:26Z 2025-09-05T10:36:26Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for perl-Authen-SASL, perl-Crypt-URandom This update for perl-Authen-SASL, perl-Crypt-URandom fixes the following issues: Changes in perl-Authen-SASL: - CVE-2025-40918: insecurely generated client nonce (bsc#1246623) Changes in perl-Crypt-URandom: Shipped in version 0.540.0 (0.54). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-3088,SUSE-SLE-SERVER-12-SP5-LTSS-2025-3088,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-3088 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202503088-1/ Link for SUSE-SU-2025:03088-1 https://lists.suse.com/pipermail/sle-updates/2025-September/041526.html E-Mail link for SUSE-SU-2025:03088-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1246623 SUSE Bug 1246623 https://www.suse.com/security/cve/CVE-2025-40918/ SUSE CVE CVE-2025-40918 page SUSE Linux Enterprise Server 12 SP5-LTSS SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 perl-Authen-SASL-2.16-5.3.1 perl-Crypt-URandom-0.540.0-1.3.1 perl-Authen-SASL-2.16-5.3.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS perl-Crypt-URandom-0.540.0-1.3.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS perl-Authen-SASL-2.16-5.3.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 perl-Crypt-URandom-0.540.0-1.3.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 Authen::SASL::Perl::DIGEST_MD5 versions 2.04 through 2.1800 for Perl generates the cnonce insecurely. The cnonce (client nonce) is generated from an MD5 hash of the PID, the epoch time and the built-in rand function. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. According to RFC 2831, The cnonce-value is an opaque quoted string value provided by the client and used by both client and server to avoid chosen plaintext attacks, and to provide mutual authentication. The security of the implementation depends on a good choice. It is RECOMMENDED that it contain at least 64 bits of entropy. CVE-2025-40918 SUSE Linux Enterprise Server 12 SP5-LTSS:perl-Authen-SASL-2.16-5.3.1 SUSE Linux Enterprise Server 12 SP5-LTSS:perl-Crypt-URandom-0.540.0-1.3.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:perl-Authen-SASL-2.16-5.3.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:perl-Crypt-URandom-0.540.0-1.3.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202503088-1/ https://www.suse.com/security/cve/CVE-2025-40918.html CVE-2025-40918 https://bugzilla.suse.com/1246623 SUSE Bug 1246623