Bug 674325 (CVE-2011-0284) - CVE-2011-0284 krb5 (krb5kdc): Double-free flaw by handling error messages upon receiving certain AS_REQ's (MITKRB5-SA-2011-003)
Summary: CVE-2011-0284 krb5 (krb5kdc): Double-free flaw by handling error messages upo...
Status: CLOSED ERRATA
Alias: CVE-2011-0284
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL: http://web.mit.edu/kerberos/advisorie...
Whiteboard: public=20110315,reported=20110120,sou...
Keywords: Security
Depends On: 681564 681565 688094
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-02-01 13:37 UTC by Jan Lieskovsky
Modified: 2019-06-08 18:43 UTC (History)
6 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2013-11-05 16:55:28 UTC


Attachments (Terms of Use)
Proposed patch from Nalin Dahyabhai to fix the issue (778 bytes, patch)
2011-02-01 13:44 UTC, Jan Lieskovsky
no flags Details | Diff


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0356 normal SHIPPED_LIVE Important: krb5 security update 2011-03-16 10:11:46 UTC

Description Jan Lieskovsky 2011-02-01 13:37:30 UTC
A double-free flaw was found in the way the MIT Kerberos
KDC handled initial authentication requests (AS-REQ), when
the KDC was configured to provide the PKINIT capability.
A remote attacker could use this flaw to cause the KDC
daemon to abort by using a specially-crafted AS-REQ request. 
Different vulnerability than CVE-2010-1320 and CVE-2005-1174.

Comment 2 Jan Lieskovsky 2011-02-01 13:44:27 UTC
Created attachment 476397 [details]
Proposed patch from Nalin Dahyabhai to fix the issue

Comment 3 Jan Lieskovsky 2011-02-01 13:45:57 UTC
This issue did NOT affect the versions of the krb5 package, as shipped
with Red Hat Enterprise Linux 3, 4, or 5.

This issue affects the version of the krb5 package, as shipped 
with Red Hat Enterprise Linux 6.

--

This issue affects the versions of the krb5 package, as shipped with
Fedora release of 13 and 14.

Comment 7 Jan Lieskovsky 2011-02-04 11:01:27 UTC
The CVE identifier of CVE-2011-0284 has been assigned to this issue.

Comment 16 Tomas Hoger 2011-03-15 19:25:01 UTC
Public now via:
  http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2011-003.txt

Comment 17 errata-xmlrpc 2011-03-16 10:11:52 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0356 https://rhn.redhat.com/errata/RHSA-2011-0356.html

Comment 18 Huzaifa S. Sidhpurwala 2011-03-16 10:17:11 UTC
Created krb5 tracking bugs for this issue

Affects: fedora-all [bug 688094]


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