What’s Vulnerable › Vulnerabilities

CVE-2013-1416

• Severity: medium (CVSS 4.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-04-19 · updated 2026-06-16
• Weakness: CWE-476

Description

The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.

Affected products

• Fedoraproject Fedora: 17, 18
• MIT Kerberos 5: before 1.10.5 — fixed in 1.10.5
• Opensuse: 11.4, 12.1, 12.2, 12.3
• RedHat Enterprise Linux Desktop: 6.0
• RedHat Enterprise Linux Eus: 6.4
• RedHat Enterprise Linux Server: 6.0
• RedHat Enterprise Linux Server Aus: 6.4
• RedHat Enterprise Linux Workstation: 6.0

How to fix

Upgrade to a fixed version: MIT Kerberos 5 1.10.5. Check the vendor advisory for mitigations.

References

• http://krbdev.mit.edu/rt/Ticket/Display.html?id=7600
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102058.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102074.html
• http://lists.opensuse.org/opensuse-updates/2013-05/msg00011.html
• http://lists.opensuse.org/opensuse-updates/2013-06/msg00041.html
• http://lists.opensuse.org/opensuse-updates/2013-06/msg00102.html
• http://rhn.redhat.com/errata/RHSA-2013-0748.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:157
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:158
• https://github.com/krb5/krb5/commit/8ee70ec63931d1e38567905387ab9b1d45734d81
• http://krbdev.mit.edu/rt/Ticket/Display.html?id=7600
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102058.html

Get alerted when CVE-2013-1416 or the next vulnerability affects your stack