Security update for redis SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:1432-1 Final 1 1 2025-05-02T10:23:30Z current 2025-05-02T10:23:30Z 2025-05-02T10:23:30Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for redis This update for redis fixes the following issues: - CVE-2025-21605: Fixed an output buffer denial of service. (bsc#1241708) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-1432,SUSE-SLE-Module-Server-Applications-15-SP6-2025-1432,openSUSE-SLE-15.6-2025-1432 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-20251432-1/ Link for SUSE-SU-2025:1432-1 https://lists.suse.com/pipermail/sle-updates/2025-May/039126.html E-Mail link for SUSE-SU-2025:1432-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1241708 SUSE Bug 1241708 https://www.suse.com/security/cve/CVE-2025-21605/ SUSE CVE CVE-2025-21605 page SUSE Linux Enterprise Module for Server Applications 15 SP6 openSUSE Leap 15.6 redis7-7.0.8-150600.8.9.1 redis7-7.0.8-150600.8.9.1 as a component of SUSE Linux Enterprise Module for Server Applications 15 SP6 redis7-7.0.8-150600.8.9.1 as a component of openSUSE Leap 15.6 Redis is an open source, in-memory database that persists on disk. In versions starting at 2.6 and prior to 7.4.3, An unauthenticated client can cause unlimited growth of output buffers, until the server runs out of memory or is killed. By default, the Redis configuration does not limit the output buffer of normal clients (see client-output-buffer-limit). Therefore, the output buffer can grow unlimitedly over time. As a result, the service is exhausted and the memory is unavailable. When password authentication is enabled on the Redis server, but no password is provided, the client can still cause the output buffer to grow from "NOAUTH" responses until the system will run out of memory. This issue has been patched in version 7.4.3. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways. Either using network access control tools like firewalls, iptables, security groups, etc, or enabling TLS and requiring users to authenticate using client side certificates. CVE-2025-21605 SUSE Linux Enterprise Module for Server Applications 15 SP6:redis7-7.0.8-150600.8.9.1 openSUSE Leap 15.6:redis7-7.0.8-150600.8.9.1 important 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-20251432-1/ https://www.suse.com/security/cve/CVE-2025-21605.html CVE-2025-21605 https://bugzilla.suse.com/1241708 SUSE Bug 1241708