Description
The (1) kadm5_create_principal_3 and (2) kadm5_modify_principal functions in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.4 and 1.14.x before 1.14.1 allow remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by specifying KADM5_POLICY with a NULL policy name.
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 | 1.13.2+dfsg-5 | — |
| Debian 13 | krb5 | 1.13.2+dfsg-5 | — |
| Debian 12 | krb5 | 1.13.2+dfsg-5 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | krb5 | 1.12+dfsg-2ubuntu5.4 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | krb5 +6 | 1.13.2-12.el7_2 | RHSA-2016:0532 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | krb5 | 1.12.1-25.1 | SUSE-SU-2016:0429-1 |
| SLES 12 | krb5 | 1.12.1-25.1 | SUSE-SU-2016:0429-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | krb5 | 1.12.1-25.1 | SUSE-SU-2016:0429-1 |
| SLES for SAP 12 | krb5 | 1.12.1-25.1 | SUSE-SU-2016:0429-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | krb5 | 1.15-1.1 | openSUSE-SU-2024:10004-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.4 | krb5 | 1.14-r1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | krb5-libs +5 | 1.13.2-12.el7_2 | ELSA-2016-0532 |
Advisories 4
- RHSA-2016:0532 Red Hat Security Advisory: krb5 security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- openSUSE-SU-2024:10004-1 krb5-1.15-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0429-1 Security update for krb5 SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2016-0532 Moderate: krb5 security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 31, 2016
References
- DSA-3466 vendor-advisory
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8342
- 1034915 vdb-entry
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- openSUSE-SU-2016:0406 vendor-advisory
- RHSA-2016:0532 vendor-advisory
- openSUSE-SU-2016:0501 vendor-advisory
- https://github.com/krb5/krb5/commit/b863de7fbf080b15e347a736fdda0a82d42f4f6b