Python-kdcproxy: unauthenticated ssrf via realm‑controlled dns srv_CVE-2025-59088

8.6 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

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.

AI Analysis

Server-side request forgery vulnerability in kdcproxy via realm-controlled DNS SRV records, allowing attackers to probe internal network topology and exfiltrate data.

Basic Information

ID CVE-2025-59088

Source redhat

Published Nov 12, 2025 at 16:35

Modified Nov 12, 2025 at 21:07

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-918

AI Assessment

AI Score 8.6 / 10

AI Severity High

Vendor Red Hat

Product kdcproxy

References

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