CVE-2013-1418

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-11-18 · updated 2026-06-16
Weakness: CWE-476

Description

The setup_server_realm function in main.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.7, when multiple realms are configured, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request.

Affected products

Debian Linux: 7.0
MIT Kerberos 5: before 1.10.7 — fixed in 1.10.7
Opensuse: 11.4, 12.2, 12.3, 13.1

How to fix

Upgrade to a fixed version: MIT Kerberos 5 1.10.7. Check the vendor advisory for mitigations.

References

http://advisories.mageia.org/MGASA-2013-0335.html
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7757
http://lists.opensuse.org/opensuse-updates/2013-11/msg00082.html
http://lists.opensuse.org/opensuse-updates/2013-11/msg00086.html
http://lists.opensuse.org/opensuse-updates/2013-12/msg00026.html
http://web.mit.edu/kerberos/krb5-1.10/README-1.10.7.txt
http://web.mit.edu/kerberos/krb5-1.11/README-1.11.4.txt
http://www.securityfocus.com/bid/63555
https://bugzilla.redhat.com/show_bug.cgi?id=1026942
https://github.com/krb5/krb5/commit/c2ccf4197f697c4ff143b8a786acdd875e70a89d
https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html
http://advisories.mageia.org/MGASA-2013-0335.html

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