Description
plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.1, when the KDC uses LDAP, allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by creating a database entry for a keyless principal, as demonstrated by a kadmin "add_principal -nokey" or "purgekeys -all" command.
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 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | krb5 | 1.12+dfsg-2ubuntu5.1 | USN-2498-1 |
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 |
Advisories 4
- USN-2498-1 krb5 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 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
References
- openSUSE-SU-2015:0542 vendor-advisory
- 71680 vdb-entry
- 1031376 vdb-entry
- USN-2498-1 vendor-advisory
- https://github.com/krb5/krb5/commit/04038bf3633c4b909b5ded3072dc88c8c419bf16