Server-Side Request Forgery (SSRF) Affecting opendnssec package, versions <0:2.1.7-2.module+el8.10.0+90553+1bd85afa


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ORACLE8-OPENDNSSEC-14001829
  • published14 Nov 2025
  • disclosed12 Nov 2025

Introduced: 12 Nov 2025

CVE-2025-59088  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Oracle:8 opendnssec to version 0:2.1.7-2.module+el8.10.0+90553+1bd85afa or higher.
This issue was patched in ELSA-2025-21140.

NVD Description

Note: Versions mentioned in the description apply only to the upstream opendnssec package and not the opendnssec package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1