Description
Multiple buffer overflows in krb5_aname_to_localname for MIT Kerberos 5 (krb5) 1.3.3 and earlier allow remote attackers to execute arbitrary code as root.
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 | 1.3.3-2 | — |
| Debian 13 | krb5 | 1.3.3-2 | — |
| Debian 12 | krb5 | 1.3.3-2 | — |
| Debian 3.0 | krb5 | 1.2.4-5woody5 | DSA-520 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | krb5 +4 | 1.2.7-24 | RHSA-2004:236 |
Advisories 2
- RHSA-2004:236 Red Hat Security Advisory: krb5 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-520 krb5 - buffer overflows Debian Security (DSA / DLA) · Mar 9, 2026
References
- CLA-2004:860 vendor-advisory
- FEDORA-2004-149 vendor-advisory
- RHSA-2004:236 vendor-advisory
- oval:org.mitre.oval:def:991 vdb-entry signature
- DSA-520 vendor-advisory
- oval:org.mitre.oval:def:724 vdb-entry signature
- 20040601 MITKRB5-SA-2004-001: buffer overflows in krb5_aname_to_localname mailing-list
- VU#686862 third-party-advisory
- GLSA-200406-21 vendor-advisory
- Kerberos-krb5anametolocalname-bo(16268) vdb-entry
- 20040602 TSSA-2004-009 - kerberos5 mailing-list
- MDKSA-2004:056 vendor-advisory
- 101512 vendor-advisory
- 2004-0032 vendor-advisory
- 10448 vdb-entry
- oval:org.mitre.oval:def:2002 vdb-entry signature
- oval:org.mitre.oval:def:10295 vdb-entry signature