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Fencer Intel
high 7.8

CVE-2014-4344 json

The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x befor…

published 2014-08-14 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-4271

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.6%
EPSS 6.6% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.12.1+dfsg-5

debian advisories DEBIAN-CVE-2014-4344

  • krb5 Ubuntu 14.04 LTS 1.12+dfsg-2ubuntu4.2

ubuntu advisories UBUNTU-CVE-2014-4344

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 7 1.12.2-14.el7
  • krb5-libs RHEL 7 1.12.2-14.el7
  • krb5-pkinit RHEL 7 1.12.2-14.el7
  • krb5-server RHEL 7 1.12.2-14.el7
  • krb5-server-ldap RHEL 7 1.12.2-14.el7
  • krb5-workstation RHEL 7 1.12.2-14.el7
  • krb5 RHEL 6 1.10.3-33.el6
  • krb5-libs RHEL 6 1.10.3-33.el6

red hat advisories RHSA-2015:0439RHSA-2014:1389RHSA-2014:1245

  • krb5 openSUSE Tumbleweed 1.15-1.1

opensuse advisories openSUSE-SU-2024:10004-1

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-2014-4344 updated cvss 4.3

krb5: NULL pointer dereference flaw in SPNEGO acceptor for continuation tokens

  • Red Hat Enterprise Linux (v. 5 server) krb5 1.6.1-78.el5, krb5-libs 1.6.1-78.el5, krb5-server 1.6.1-78.el5, krb5-server-ldap 1.6.1-78.el5, krb5-workstation 1.6.1-78.el5
    fixed: vendor fix RHSA-2014:1245
  • 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-server 1.12.2-14.el7, krb5-server-ldap 1.12.2-14.el7, krb5-workstation 1.12.2-14.el7 Red Hat Enterprise Linux Client Optional (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 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-server 1.12.2-14.el7, krb5-server-ldap 1.12.2-14.el7, krb5-workstation 1.12.2-14.el7 Red Hat Enterprise Linux ComputeNode Optional (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 Desktop (v. 5 client) krb5 1.6.1-78.el5, krb5-libs 1.6.1-78.el5, krb5-server 1.6.1-78.el5, krb5-server-ldap 1.6.1-78.el5, krb5-workstation 1.6.1-78.el5
    fixed: vendor fix RHSA-2014:1245
  • Red Hat Enterprise Linux Desktop (v. 6) krb5 1.10.3-33.el6, krb5-libs 1.10.3-33.el6, krb5-server 1.10.3-33.el6, krb5-server-ldap 1.10.3-33.el6, krb5-workstation 1.10.3-33.el6, krb5-pkinit-openssl 1.10.3-33.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) krb5 1.10.3-33.el6, krb5-libs 1.10.3-33.el6, krb5-server 1.10.3-33.el6, krb5-server-ldap 1.10.3-33.el6, krb5-workstation 1.10.3-33.el6, krb5-pkinit-openssl 1.10.3-33.el6
    fixed: vendor fix RHSA-2014:1389
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5 1.6.1-78.el5, krb5-libs 1.6.1-78.el5, krb5-server 1.6.1-78.el5, krb5-server-ldap 1.6.1-78.el5, krb5-workstation 1.6.1-78.el5
    fixed: vendor fix RHSA-2014:1245
  • Red Hat Enterprise Linux HPC Node (v. 6) krb5 1.10.3-33.el6, krb5-libs 1.10.3-33.el6, krb5-server 1.10.3-33.el6, krb5-server-ldap 1.10.3-33.el6, krb5-workstation 1.10.3-33.el6, krb5-pkinit-openssl 1.10.3-33.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) krb5 1.10.3-33.el6, krb5-libs 1.10.3-33.el6, krb5-server 1.10.3-33.el6, krb5-server-ldap 1.10.3-33.el6, krb5-workstation 1.10.3-33.el6, krb5-pkinit-openssl 1.10.3-33.el6 Red Hat Enterprise Linux Server (v. 6) krb5 1.10.3-33.el6, krb5-libs 1.10.3-33.el6, krb5-server 1.10.3-33.el6, krb5-server-ldap 1.10.3-33.el6, krb5-workstation 1.10.3-33.el6, krb5-pkinit-openssl 1.10.3-33.el6
    fixed: vendor fix RHSA-2014:1389
  • 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 1.10.3-33.el6, krb5-libs 1.10.3-33.el6, krb5-server 1.10.3-33.el6, krb5-server-ldap 1.10.3-33.el6, krb5-workstation 1.10.3-33.el6, krb5-pkinit-openssl 1.10.3-33.el6
    fixed: vendor fix RHSA-2014:1389
show 1 more
  • 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 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

6.61% 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 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness

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.