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Fencer Intel
medium 4.0

CVE-2012-1013 json

The check_1_6_dummy function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x, and 1.10.x before 1.10.…

published 2012-06-07 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1051

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The check_1_6_dummy function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x, and 1.10.x before 1.10.2 allows remote authenticated administrators to cause a denial of service (NULL pointer dereference and daemon crash) via a KRB5_KDB_DISALLOW_ALL_TIX create request that lacks a password.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.10.1+dfsg-3

debian advisories DEBIAN-CVE-2012-1013

  • krb5 RHEL 6 1.9-33.el6_3.2
  • krb5-libs RHEL 6 1.9-33.el6_3.2
  • krb5-server RHEL 6 1.9-33.el6_3.2
  • krb5-server-ldap RHEL 6 1.9-33.el6_3.2
  • krb5-workstation RHEL 6 1.9-33.el6_3.2
  • krb5-pkinit-openssl RHEL 6 1.9-33.el6_3.2

red hat advisories RHSA-2012:1131

  • 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-2012-1013 updated cvss 3.5

krb5: kadmind denial of service

  • Red Hat Enterprise Linux Desktop (v. 6) krb5 1.9-33.el6_3.2, krb5-libs 1.9-33.el6_3.2, krb5-workstation 1.9-33.el6_3.2, krb5-pkinit-openssl 1.9-33.el6_3.2 Red Hat Enterprise Linux Desktop Optional (v. 6) krb5 1.9-33.el6_3.2, krb5-server 1.9-33.el6_3.2, krb5-server-ldap 1.9-33.el6_3.2 Red Hat Enterprise Linux HPC Node (v. 6) krb5 1.9-33.el6_3.2, krb5-libs 1.9-33.el6_3.2, krb5-workstation 1.9-33.el6_3.2, krb5-pkinit-openssl 1.9-33.el6_3.2 Red Hat Enterprise Linux HPC Node Optional (v. 6) krb5 1.9-33.el6_3.2, krb5-server 1.9-33.el6_3.2, krb5-server-ldap 1.9-33.el6_3.2 Red Hat Enterprise Linux Server (v. 6) krb5 1.9-33.el6_3.2, krb5-libs 1.9-33.el6_3.2, krb5-server 1.9-33.el6_3.2, krb5-server-ldap 1.9-33.el6_3.2, krb5-workstation 1.9-33.el6_3.2, krb5-pkinit-openssl 1.9-33.el6_3.2 Red Hat Enterprise Linux Workstation (v. 6) krb5 1.9-33.el6_3.2, krb5-libs 1.9-33.el6_3.2, krb5-server 1.9-33.el6_3.2, krb5-server-ldap 1.9-33.el6_3.2, krb5-workstation 1.9-33.el6_3.2, krb5-pkinit-openssl 1.9-33.el6_3.2
    fixed: vendor fix RHSA-2012:1131
  • 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

3.08% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/krb5/krb5/commit/c5be6209311d4a8f10fda37d0d3f876c1b33b77b referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

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.