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critical 9.0

CVE-2014-9421 json

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…

published 11y ago modified 4mo ago also EUVD-2014-9242

cvss
9.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.2%
EPSS 6.2% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.12.1+dfsg-17

debian advisories DEBIAN-CVE-2014-9421

  • krb5 Ubuntu 14.04 LTS 1.12+dfsg-2ubuntu5.1

ubuntu advisories UBUNTU-CVE-2014-9421

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • krb5 RHEL 6 1.10.3-37.el6_6
  • krb5-libs RHEL 6 1.10.3-37.el6_6
  • krb5-server RHEL 6 1.10.3-37.el6_6
  • krb5-server-ldap RHEL 6 1.10.3-37.el6_6
  • krb5-workstation RHEL 6 1.10.3-37.el6_6
  • krb5-pkinit-openssl RHEL 6 1.10.3-37.el6_6
  • krb5 RHEL 7 1.12.2-14.el7
  • krb5-libs RHEL 7 1.12.2-14.el7

red hat advisories RHSA-2015:0794RHSA-2015:0439

  • krb5 SLES 12, SLED 12, SLE Software Development Kit 12 +1 more 1.12.1-9.1

suse advisories SUSE-SU-2015:0290-1SUSE-SU-2015:0290-2

  • krb5 openSUSE Tumbleweed 1.15-1.1

opensuse advisories openSUSE-SU-2024:10004-1

Is CVE-2014-9421 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-9421 updated cvss 6.5

krb5: kadmind doubly frees partial deserialization results (MITKRB5-SA-2015-001)

  • Red Hat Enterprise Linux 5 krb5
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) krb5 1.12.2-14.el7, krb5-libs 1.12.2-14.el7, krb5-pkinit 1.12.2-14.el7, krb5-workstation 1.12.2-14.el7 Red Hat Enterprise Linux Client Optional (v. 7) krb5-server 1.12.2-14.el7, krb5-server-ldap 1.12.2-14.el7 Red Hat Enterprise Linux ComputeNode (v. 7) krb5 1.12.2-14.el7, krb5-libs 1.12.2-14.el7, krb5-pkinit 1.12.2-14.el7, krb5-workstation 1.12.2-14.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) krb5-server 1.12.2-14.el7, krb5-server-ldap 1.12.2-14.el7
    fixed: vendor fix RHSA-2015:0439
  • Red Hat Enterprise Linux Desktop (v. 6) krb5 1.10.3-37.el6_6, krb5-libs 1.10.3-37.el6_6, krb5-workstation 1.10.3-37.el6_6, krb5-pkinit-openssl 1.10.3-37.el6_6 Red Hat Enterprise Linux Desktop Optional (v. 6) krb5-server 1.10.3-37.el6_6, krb5-server-ldap 1.10.3-37.el6_6 Red Hat Enterprise Linux HPC Node (v. 6) krb5 1.10.3-37.el6_6, krb5-libs 1.10.3-37.el6_6, krb5-workstation 1.10.3-37.el6_6, krb5-pkinit-openssl 1.10.3-37.el6_6 Red Hat Enterprise Linux HPC Node Optional (v. 6) krb5-server 1.10.3-37.el6_6, krb5-server-ldap 1.10.3-37.el6_6 Red Hat Enterprise Linux Server (v. 6) krb5 1.10.3-37.el6_6, krb5-libs 1.10.3-37.el6_6, krb5-server 1.10.3-37.el6_6, krb5-server-ldap 1.10.3-37.el6_6, krb5-workstation 1.10.3-37.el6_6, krb5-pkinit-openssl 1.10.3-37.el6_6
    fixed: vendor fix RHSA-2015:0794
  • Red Hat Enterprise Linux Server (v. 7) krb5 1.12.2-14.el7, krb5-libs 1.12.2-14.el7, krb5-pkinit 1.12.2-14.el7, krb5-server 1.12.2-14.el7, krb5-server-ldap 1.12.2-14.el7, krb5-workstation 1.12.2-14.el7
    fixed: vendor fix RHSA-2015:0439
  • Red Hat Enterprise Linux Workstation (v. 6) krb5 1.10.3-37.el6_6, krb5-libs 1.10.3-37.el6_6, krb5-server 1.10.3-37.el6_6, krb5-server-ldap 1.10.3-37.el6_6, krb5-workstation 1.10.3-37.el6_6, krb5-pkinit-openssl 1.10.3-37.el6_6
    fixed: vendor fix RHSA-2015:0794
  • Red Hat Enterprise Linux Workstation (v. 7) krb5 1.12.2-14.el7, krb5-libs 1.12.2-14.el7, krb5-pkinit 1.12.2-14.el7, krb5-server 1.12.2-14.el7, krb5-server-ldap 1.12.2-14.el7, krb5-workstation 1.12.2-14.el7
    fixed: vendor fix RHSA-2015:0439
  • Red Hat JBoss Enterprise Application Platform 6 krb5 Red Hat JBoss Enterprise Web Server 2 krb5
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.21% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.