Bug 668719 (CVE-2011-0281) - CVE-2011-0281 krb5: KDC hang when using LDAP backend caused by special principal name (MITKRB5-SA-2011-002)
Summary: CVE-2011-0281 krb5: KDC hang when using LDAP backend caused by special princi...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-0281
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:
Depends On: 671096 671097 671101 671102 676127
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-01-11 11:39 UTC by Jan Lieskovsky
Modified: 2021-02-24 16:46 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-06-21 09:31:14 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0199 0 normal SHIPPED_LIVE Important: krb5 security update 2011-02-08 21:41:35 UTC
Red Hat Product Errata RHSA-2011:0200 0 normal SHIPPED_LIVE Important: krb5 security update 2011-02-08 21:51:54 UTC

Description Jan Lieskovsky 2011-01-11 11:39:17 UTC
A denial of service flaw was found in the way 
MIT Key Distribution Center (KDC) daemon processed
certain principal names provided in request for 
ticket-granting ticket, when the krb5kdc daemon was 
configured to use an LDAP back end. A remote attacker 
could use this flaw to cause a krb5kdc daemon hang
via a ticket-granting ticket request for specially-crafted
principal name.

Acknowledgements: 

Red Hat would like to thank the MIT Kerberos project for reporting
this issue. Upstream acknowledges Kevin Longfellow of Oracle Corporation
as the original reporter.

Comment 5 Jan Lieskovsky 2011-01-20 09:14:18 UTC
This issue does NOT affect the versions of the krb5 package,
as shipped with Red Hat Enterprise Linux 3 or 4, as those
versions do not support LDAP back end yet.

--

This issue affects the versions of the krb5 package, as shipped
with Red Hat Enterprise Linux 5 and 6.

--

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

Comment 8 Vincent Danen 2011-02-08 21:19:48 UTC
This issue is now public:

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt

Statement:

This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3 or 4 as they did not include support for the LDAP backend.

Comment 9 Vincent Danen 2011-02-08 21:38:31 UTC
Created krb5 tracking bugs for this issue

Affects: fedora-all [bug 676127]

Comment 10 errata-xmlrpc 2011-02-08 21:41:40 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0199 https://rhn.redhat.com/errata/RHSA-2011-0199.html

Comment 11 errata-xmlrpc 2011-02-08 21:52:02 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0200 https://rhn.redhat.com/errata/RHSA-2011-0200.html


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