CVE-2014-4344
Description
The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Red Hat Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 7.0 | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.12.1+dfsg-5 |
| sid | Fixed | 1.12.1+dfsg-5 |
| forky | Fixed | 1.12.1+dfsg-5 |
| bullseye | Fixed | 1.12.1+dfsg-5 |
| bookworm | Fixed | 1.12.1+dfsg-5 |
| 7.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| mit | kerberos_5 | 1.10 | |
| mit | kerberos_5 | 1.10.1 | |
| mit | kerberos_5 | 1.10.2 | |
| mit | kerberos_5 | 1.10.3 | |
| mit | kerberos_5 | 1.10.4 | |
| mit | kerberos_5 | 1.11 | |
| mit | kerberos_5 | 1.11.1 | |
| mit | kerberos_5 | 1.11.2 | |
| mit | kerberos_5 | 1.11.3 | |
| mit | kerberos_5 | 1.11.4 | |
| mit | kerberos_5 | 1.11.5 | |
| mit | kerberos_5 | 1.12 | |
| mit | kerberos_5 | 1.12.1 | |
References
- http://advisories.mageia.org/MGASA-2014-0345.html
- http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html
- http://rhn.redhat.com/errata/RHSA-2015-0439.html
- http://secunia.com/advisories/59102
- http://secunia.com/advisories/60082
- http://secunia.com/advisories/60448
- http://secunia.com/advisories/61051
- http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html
- http://www.debian.org/security/2014/dsa-3000
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:165
- http://www.osvdb.org/109389
- http://www.securityfocus.com/bid/69160
- http://www.securitytracker.com/id/1030706
- https://bugzilla.redhat.com/show_bug.cgi?id=1121877
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95210
- https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b
- https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc
- https://security-tracker.debian.org/tracker/CVE-2014-4344
CWEs
CWE-476
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.