CVE-2015-2697: Canonical Ubuntu Linux

Medium severity, CVSS 4.0. EPSS: 4.1% chance of exploitation in the next 30 days.

The build_principal_va function in lib/krb5/krb/bld_princ.c in MIT Kerberos 5 (aka krb5) before 1.14 allows remote authenticated users to cause a denial of service (out-of-bounds read and KDC crash) via an initial '\0' character in a long realm field within a TGS request.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.04 only; version 15.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Mit Kerberos 5: before 1.14 (fixed in 1.14)
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only
• Oracle Solaris: version 11.3 only
• Suse Linux Enterprise Desktop: version 12 only
• Suse Linux Enterprise Server: version 12 only
• Suse Linux Enterprise Software Development Kit: version 12 only

Published 2015-11-09. Last modified 2026-06-17.