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Fencer Intel
medium 5.0

CVE-2012-1016 json

The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center…

published 2013-03-03 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1054

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF identifier in inappropriate circumstances, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted Draft 9 request.

Patch / fix

  • mit kerberos_5 1.10.4
  • krb5 Debian 14, Debian 13, Debian 12 1.10.1+dfsg-4+nmu1

debian advisories DEBIAN-CVE-2012-1016

  • krb5 RHEL 6 1.10.3-10.el6_4.1
  • krb5-libs RHEL 6 1.10.3-10.el6_4.1
  • krb5-server RHEL 6 1.10.3-10.el6_4.1
  • krb5-server-ldap RHEL 6 1.10.3-10.el6_4.1
  • krb5-workstation RHEL 6 1.10.3-10.el6_4.1
  • krb5-pkinit-openssl RHEL 6 1.10.3-10.el6_4.1

red hat advisories RHSA-2013:0656

  • 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-2012-1016 updated cvss 4.3

krb5: PKINIT null pointer deref leads to DoS

  • Red Hat Enterprise Linux Desktop (v. 6) krb5 1.10.3-10.el6_4.1, krb5-libs 1.10.3-10.el6_4.1, krb5-workstation 1.10.3-10.el6_4.1, krb5-pkinit-openssl 1.10.3-10.el6_4.1 Red Hat Enterprise Linux Desktop Optional (v. 6) krb5 1.10.3-10.el6_4.1, krb5-server 1.10.3-10.el6_4.1, krb5-server-ldap 1.10.3-10.el6_4.1 Red Hat Enterprise Linux HPC Node (v. 6) krb5 1.10.3-10.el6_4.1, krb5-libs 1.10.3-10.el6_4.1, krb5-workstation 1.10.3-10.el6_4.1, krb5-pkinit-openssl 1.10.3-10.el6_4.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) krb5 1.10.3-10.el6_4.1, krb5-server 1.10.3-10.el6_4.1, krb5-server-ldap 1.10.3-10.el6_4.1 Red Hat Enterprise Linux Server (v. 6) krb5 1.10.3-10.el6_4.1, krb5-libs 1.10.3-10.el6_4.1, krb5-server 1.10.3-10.el6_4.1, krb5-server-ldap 1.10.3-10.el6_4.1, krb5-workstation 1.10.3-10.el6_4.1, krb5-pkinit-openssl 1.10.3-10.el6_4.1 Red Hat Enterprise Linux Workstation (v. 6) krb5 1.10.3-10.el6_4.1, krb5-libs 1.10.3-10.el6_4.1, krb5-server 1.10.3-10.el6_4.1, krb5-server-ldap 1.10.3-10.el6_4.1, krb5-workstation 1.10.3-10.el6_4.1, krb5-pkinit-openssl 1.10.3-10.el6_4.1
    fixed: vendor fix RHSA-2013:0656
  • Red Hat Enterprise Linux 4 krb5 Red Hat Enterprise Linux 5 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

2.58% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

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