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python-kdcproxy: Unauthenticated SSRF via Realm‑Controlled DNS SRV

🗓️ 20 Nov 2025 08:05:06Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

SSRF in python-kdcproxy when realm lacks server addresses; DNS SRV lookups can reach hosts.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.2x86_64bind-dyndb-ldap0:11.2-3.module+el8.2.0+21753+7109ce90.3bind-dyndb-ldap-0:11.2-3.module+el8.2.0+21753+7109ce90.3.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64bind-dyndb-ldap-debuginfo0:11.2-3.module+el8.2.0+21753+7109ce90.3bind-dyndb-ldap-debuginfo-0:11.2-3.module+el8.2.0+21753+7109ce90.3.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64bind-dyndb-ldap-debugsource0:11.2-3.module+el8.2.0+21753+7109ce90.3bind-dyndb-ldap-debugsource-0:11.2-3.module+el8.2.0+21753+7109ce90.3.x86_64.rpm
Red Hat Enterprise Linux8.2anycustodia0:0.6.0-3.module+el8.1.0+4098+f286395e.noarchcustodia-0:0.6.0-3.module+el8.1.0+4098+f286395e.noarch.noarch.rpm
Red Hat Enterprise Linux8.2x86_64ipa-client0:4.8.4-14.module+el8.2.0+23544+91c528c8.10ipa-client-0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.x86_64.rpm
Red Hat Enterprise Linux8.2anyipa-client-common0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.noarchipa-client-common-0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.noarch.noarch.rpm
Red Hat Enterprise Linux8.2x86_64ipa-client-debuginfo0:4.8.4-14.module+el8.2.0+23544+91c528c8.10ipa-client-debuginfo-0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64ipa-client-samba0:4.8.4-14.module+el8.2.0+23544+91c528c8.10ipa-client-samba-0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.x86_64.rpm
Red Hat Enterprise Linux8.2anyipa-common0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.noarchipa-common-0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.noarch.noarch.rpm
Red Hat Enterprise Linux8.2x86_64ipa-debuginfo0:4.8.4-14.module+el8.2.0+23544+91c528c8.10ipa-debuginfo-0:4.8.4-14.module+el8.2.0+23544+91c528c8.10.x86_64.rpm
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20 Apr 2026 08:28Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.6
EPSS0.00076
SSVC
4