CVE-2025-59088 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2025-59088 Interim 1 1 2025-12-23T00:17:10Z current 2025-12-23T00:17:10Z 2025-12-23T00:17:10Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2025-59088 If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. This creates a server-side request forgery vulnerability, since an attacker could send a request for a realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where the "use_dns" setting is explicitly set to false are not affected. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.suse.com/pipermail/suse-liberty-linux-updates/2025-November/002259.html E-Mail link for RHSA-2025:21138 https://www.suse.com/support/security/rating/ SUSE Security Ratings SUSE Liberty Linux 9 python3-kdcproxy-1.0.0-9.el9_6 python3-kdcproxy-1.0.0-9.el9_6 as a component of SUSE Liberty Linux 9 If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. This creates a server-side request forgery vulnerability, since an attacker could send a request for a realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where the "use_dns" setting is explicitly set to false are not affected. CVE-2025-59088 SUSE Liberty Linux 9:python3-kdcproxy-1.0.0-9.el9_6 important