Description
Use-after-free vulnerability in kadmin/server/server_stubs.c in kadmind in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote authenticated users to cause a denial of service (daemon crash) via a request from a kadmin client that sends an invalid API version number.
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 | 1.7+dfsg-1 | — |
| Debian 13 | krb5 | 1.7+dfsg-1 | — |
| Debian 12 | krb5 | 1.7+dfsg-1 | — |
| Debian 5.0 | krb5 | 1.6.dfsg.4~beta1-5lenny3 | DSA-2031-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | krb5 +4 | 1.6.1-36.el5_5.2 | RHSA-2010:0343 |
Advisories 2
- RHSA-2010:0343 Red Hat Security Advisory: krb5 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2031-1 krb5 - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=5998
- DSA-2031 vendor-advisory
- ADV-2010-0876 vdb-entry
- 39247 vdb-entry
- 1023821 vdb-entry
- 39324 third-party-advisory
- 39367 third-party-advisory
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-003.txt
- SUSE-SR:2010:009 vendor-advisory
- 39290 third-party-advisory
- FEDORA-2010-6108 vendor-advisory
- RHSA-2010:0343 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=567052
- USN-924-1 vendor-advisory
- oval:org.mitre.oval:def:9489 vdb-entry signature
- 39264 third-party-advisory
- MDVSA-2010:071 vendor-advisory
- 20100406 MITKRB5-SA-2010-003 [CVE-2010-0629] denial of service in kadmind in older krb5 releases mailing-list
- 39315 third-party-advisory