CVE-2014-9421

Severity: critical (CVSS 9.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-02-19 · updated 2026-06-17

Description

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind.

Affected products

MIT Kerberos 5: 1.11, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5 (+4)

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151103.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151437.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00016.html
http://lists.opensuse.org/opensuse-updates/2015-02/msg00044.html
http://rhn.redhat.com/errata/RHSA-2015-0439.html
http://rhn.redhat.com/errata/RHSA-2015-0794.html
http://web.mit.edu/kerberos/advisories/2015-001-patch-r113.txt
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt
http://www.debian.org/security/2015/dsa-3153
http://www.mandriva.com/security/advisories?name=MDVSA-2015:069
http://www.securityfocus.com/bid/72496

Get alerted when CVE-2014-9421 or the next vulnerability affects your stack