Red Hat Bugzilla – Full Text Bug Listing
|Summary:||CVE-2012-1016 krb5: PKINIT null pointer deref leads to DoS|
|Product:||[Other] Security Response||Reporter:||Vincent Danen <vdanen>|
|Component:||vulnerability||Assignee:||Red Hat Product Security <security-response-team>|
|Status:||CLOSED ERRATA||QA Contact:|
|Version:||unspecified||CC:||dpal, jlieskov, jplans, nalin, nathaniel|
|Fixed In Version:||krb5-1.10.4||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2013-04-03 14:18:44 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Bug Depends On:||924620, 917841, 917909, 917910|
Description Vincent Danen 2013-03-04 17:01:08 EST
Common Vulnerabilities and Exposures assigned an identifier CVE-2012-1016 to the following vulnerability: Name: CVE-2012-1016 URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1016 Assigned: 20120207 Reference: http://krbdev.mit.edu/rt/Ticket/Display.html?id=7527 Reference: http://web.mit.edu/kerberos/www/krb5-1.10/ Reference: https://github.com/krb5/krb5/commit/db64ca25d661a47b996b4e2645998b5d7f0eb52c The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF identifier in inappropriate circumstances, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted Draft 9 request. External References: http://krbdev.mit.edu/rt/Ticket/Display.html?id=7527 http://web.mit.edu/kerberos/www/krb5-1.10/ Statement: This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 5 as they did not include support for PKINIT.
Comment 1 Vincent Danen 2013-03-04 17:03:21 EST
Created krb5 tracking bugs for this issue Affects: fedora-all [bug 917841]
Comment 2 Vincent Danen 2013-03-04 17:07:28 EST
It also looks as though this does not affect krb5 1.11 as there is no reference to this CVE in the changes for 1.11.1 (http://web.mit.edu/kerberos/www/krb5-1.11/), or it has not been fixed upstream on 1.11.x yet. I've not checked to see which is the case yet.
Comment 4 Nalin Dahyabhai 2013-03-05 11:51:16 EST
(In reply to comment #2) > It also looks as though this does not affect krb5 1.11 as there is no > reference to this CVE in the changes for 1.11.1 > (http://web.mit.edu/kerberos/www/krb5-1.11/), or it has not been fixed > upstream on 1.11.x yet. I've not checked to see which is the case yet. This was fixed there as http://krbdev.mit.edu/rt/Ticket/Display.html?id=7506.
Comment 5 Fedora Update System 2013-03-15 21:31:38 EDT
krb5-1.10.2-9.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 errata-xmlrpc 2013-03-18 14:04:39 EDT
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2013:0656 https://rhn.redhat.com/errata/RHSA-2013-0656.html
Comment 7 Fedora Update System 2013-03-22 17:08:26 EDT
krb5-1.10.3-14.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
Comment 8 Jan Lieskovsky 2013-03-29 12:14:40 EDT
This issue did not affect the version of the krb5 package, as shipped with Red Hat Enterprise Linux 4.