CVE-2025-59088

Published: Nov 12, 2025

Modified: Dec 19, 2025

PUBLISHED

CVSS v3.1

8.6

HIGH

Description

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.

Vendor	Product	Versions
latchset	kdcproxy	affected `0 - < 1.1.0`
Red Hat	Red Hat Enterprise Linux 10	unaffected `0:1.0.0-19.el10_1 - < *`
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	unaffected `0:1.0.0-19.el10_0 - < *`
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	unaffected `0:0.3.2-3.el7_9.3 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `8100020251103113748.143e9e98 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `8100020251028161822.823393f5 - < *`
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	unaffected `8020020251106022345.792f4060 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected `8040020251103205102.5b01ab7e - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	unaffected `8040020251103205102.5b01ab7e - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	unaffected `8060020251030180424.ada582f1 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	unaffected `8060020251030180424.ada582f1 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	unaffected `8060020251030180424.ada582f1 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	unaffected `8080020251029082621.b0a6ceea - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	unaffected `8080020251029082621.b0a6ceea - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:1.0.0-9.el9_7 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	unaffected `0:1.0.0-7.el9_0.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	unaffected `0:1.0.0-7.el9_2.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	unaffected `0:1.0.0-7.el9_4.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	unaffected `0:1.0.0-9.el9_6 - < *`