Bug 827517 (CVE-2012-1013)

Summary:	CVE-2012-1013 krb5: kadmind denial of service
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dpal, jplans, nalin, nathaniel, prc, sgadekar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-07-31 21:43:19 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	827598, 839859, 839860
Bug Blocks:	827541, 838017

Description Vincent Danen 2012-06-01 16:42:30 UTC

MIT Kerberos 5 version 1.10.2 was released [1] and noted as fixing:

* Fix a kadmind denial of service issue (null pointer dereference), which could only be triggered by an administrator with the "create" privilege.  [CVE-2012-1013]

No information is currently available on which versions are affected by this flaw.

[1] http://mailman.mit.edu/pipermail/kerberos-announce/2012q2/000136.html

Comment 1 Vincent Danen 2012-06-01 20:17:27 UTC

Upstream bug report:

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7152

And the upstream fix:

https://github.com/krb5/krb5/commit/c5be6209311d4a8f10fda37d0d3f876c1b33b77b

This only affects krb5 1.8 and higher, and only clients authorized to create principals can trigger the bug (so requires administrative privileges).

Comment 2 Vincent Danen 2012-06-01 20:18:28 UTC

Created krb5 tracking bugs for this issue

Affects: fedora-all [bug 827598]

Comment 4 Fedora Update System 2012-06-13 21:34:03 UTC

krb5-1.10-7.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2012-06-13 21:35:17 UTC

krb5-1.9.3-2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2012-06-13 21:36:27 UTC

krb5-1.9.3-2.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 errata-xmlrpc 2012-07-31 18:56:57 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:1131 https://rhn.redhat.com/errata/RHSA-2012-1131.html

Comment 8 Vincent Danen 2012-07-31 21:43:19 UTC

Statement:

Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 4 and 5.