Security update for unbound SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:21065-1 Final 1 1 2025-11-26T14:26:20Z current 2025-11-26T14:26:20Z 2025-11-26T14:26:20Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for unbound This update for unbound fixes the following issues: - CVE-2025-11411: Fixed promiscuous records leading to domain hijacking (bsc#1252525) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-SLE-Micro-6.1-343 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-202521065-1/ Link for SUSE-SU-2025:21065-1 https://lists.suse.com/pipermail/sle-security-updates/2025-November/023414.html E-Mail link for SUSE-SU-2025:21065-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1252525 SUSE Bug 1252525 https://www.suse.com/security/cve/CVE-2025-11411/ SUSE CVE CVE-2025-11411 page SUSE Linux Micro 6.1 libunbound8-1.22.0-slfo.1.1_3.1 unbound-anchor-1.22.0-slfo.1.1_3.1 libunbound8-1.22.0-slfo.1.1_3.1 as a component of SUSE Linux Micro 6.1 unbound-anchor-1.22.0-slfo.1.1_3.1 as a component of SUSE Linux Micro 6.1 NLnet Labs Unbound up to and including version 1.24.2 is vulnerable to possible domain hijack attacks. Promiscuous NS RRSets that complement positive DNS replies in the authority section can be used to trick resolvers to update their delegation information for the zone. Usually these RRSets are used to update the resolver's knowledge of the zone's name servers. A malicious actor can exploit the possible poisonous effect by injecting NS RRSets (and possibly their respective address records) in a reply. This could be done for example by trying to spoof a packet or fragmentation attacks. Unbound would then proceed to update the NS RRSet data it already has since the new data has enough trust for it, i.e., in-zone data for the delegation point. Unbound 1.24.1 includes a fix that scrubs unsolicited NS RRSets (and their respective address records) from replies mitigating the possible poison effect. Unbound 1.24.2 includes an additional fix that scrubs unsolicited NS RRSets (and their respective address records) from YXDOMAIN and non-referral nodata replies, further mitigating the possible poison effect. CVE-2025-11411 SUSE Linux Micro 6.1:libunbound8-1.22.0-slfo.1.1_3.1 SUSE Linux Micro 6.1:unbound-anchor-1.22.0-slfo.1.1_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-202521065-1/ https://www.suse.com/security/cve/CVE-2025-11411.html CVE-2025-11411 https://bugzilla.suse.com/1252525 SUSE Bug 1252525