Description
The krb5_ldap_get_password_policy_from_dn function in plugins/kdb/ldap/libkdb_ldap/ldap_pwd_policy.c in MIT Kerberos 5 (aka krb5) before 1.13.1, when the KDC uses LDAP, allows remote authenticated users to cause a denial of service (daemon crash) via a successful LDAP query with no results, as demonstrated by using an incorrect object type for a password policy.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | krb5 | 1.12.1+dfsg-16 | — |
| Debian 13 | krb5 | 1.12.1+dfsg-16 | — |
| Debian 12 | krb5 | 1.12.1+dfsg-16 | — |
| Debian 7 | krb5 | 1.10.1+dfsg-5+deb7u9 | DLA-1265-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | krb5 | 1.12+dfsg-2ubuntu5.1 | USN-2498-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | krb5 +6 | 1.12.2-14.el7 | RHSA-2015:0439 |
| RHEL 6 | krb5 +6 | 1.10.3-37.el6_6 | RHSA-2015:0794 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | krb5 | 1.12.1-16.1 | SUSE-SU-2015:1276-1 |
| SLES 11 SP4 | krb5 +1 | 1.6.3-133.49.68.1 | SUSE-SU-2015:1282-1 |
| SLES 11 SP4 | krb5-doc | 1.6.3-133.49.68.2 | SUSE-SU-2015:1282-1 |
| SLES 11 SP3 | krb5 +1 | 1.6.3-133.49.68.1 | SUSE-SU-2015:1282-1 |
| SLES 11 SP3 | krb5-doc | 1.6.3-133.49.68.2 | SUSE-SU-2015:1282-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | krb5 | 1.12.1-16.1 | SUSE-SU-2015:1276-1 |
| SLES for SAP 11 SP4 | krb5 +1 | 1.6.3-133.49.68.1 | SUSE-SU-2015:1282-1 |
| SLES for SAP 11 SP4 | krb5-doc | 1.6.3-133.49.68.2 | SUSE-SU-2015:1282-1 |
| SLES for SAP 11 SP3 | krb5 +1 | 1.6.3-133.49.68.1 | SUSE-SU-2015:1282-1 |
| SLES for SAP 11 SP3 | krb5-doc | 1.6.3-133.49.68.2 | SUSE-SU-2015:1282-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | krb5 | 1.15-1.1 | openSUSE-SU-2024:10004-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | krb5-libs +5 | 1.12.2-14.el7 | ELSA-2015-0439 |
Advisories 8
- RHSA-2015:0794 Red Hat Security Advisory: krb5 security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2015:0439 Red Hat Security Advisory: krb5 security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-2498-1 krb5 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1265-1 krb5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10004-1 krb5-1.15-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1276-1 Security update for krb5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1282-1 Security update for krb5 SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2015-0439 Moderate: krb5 security, bug fix and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 11, 2015
References
- RHSA-2015:0794 vendor-advisory
- [debian-lts-announce] 20180131 [SECURITY] [DLA 1265-1] krb5 security update mailing-list
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=773226
- FEDORA-2015-5949 vendor-advisory
- MDVSA-2015:009 vendor-advisory
- openSUSE-SU-2015:0542 vendor-advisory
- 1031376 vdb-entry
- RHSA-2015:0439 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- https://github.com/krb5/krb5/commit/d1f707024f1d0af6e54a18885322d70fa15ec4d3
- USN-2498-1 vendor-advisory
- 71679 vdb-entry
- http://advisories.mageia.org/MGASA-2014-0536.html