Bug 914749 (CVE-2013-1415) - CVE-2013-1415 krb5: PKINIT null pointer deref leads to DoS (pkinit_check_kdc_pkid())
Summary: CVE-2013-1415 krb5: PKINIT null pointer deref leads to DoS (pkinit_check_kdc...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-1415
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 914756 917909 917910 924620
Blocks: 914754
TreeView+ depends on / blocked
 
Reported: 2013-02-22 16:58 UTC by Vincent Danen
Modified: 2021-02-17 08:00 UTC (History)
5 users (show)

Fixed In Version: krb5-1.11.1, krb5-1.10.4, krb5-1.9.5
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-04-04 02:06:17 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0656 0 normal SHIPPED_LIVE Moderate: krb5 security update 2013-03-18 22:03:12 UTC

Description Vincent Danen 2013-02-22 16:58:28 UTC
It was reported that the KDC plugin for PKINIT could dereference a NULL pointer when a malformed packet caused processing to terminate early, which led to a crash of the KDC process.  An attacker would require a valid PKINIT certificate or have observed a successful PKINIT authentication to execute a successful attack.  In addition, an unauthenticated attacker could execute the attack of anonymouse PKINIT was enabled.

The PKINIT plugin was introduced in version 1.6.3; versions prior are not affected by this vulnerability.


External References:

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7570
http://web.mit.edu/kerberos/krb5-1.11/


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 2013-02-22 17:02:22 UTC
Upstream fix is here:

https://github.com/krb5/krb5/commit/f249555301940c6df3a2cdda13b56b5674eebc2e

and it is fixed in upstream version 1.11.1.

Comment 2 Vincent Danen 2013-02-22 17:02:58 UTC
Created krb5 tracking bugs for this issue

Affects: fedora-all [bug 914756]

Comment 6 Fedora Update System 2013-03-16 01:31:31 UTC
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 7 errata-xmlrpc 2013-03-18 18:04:30 UTC
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 8 Fedora Update System 2013-03-22 21:08:17 UTC
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 9 Jan Lieskovsky 2013-04-29 08:30:20 UTC
Kerberos 5 release krb5-1.9.5 announcement:
  http://web.mit.edu/kerberos/krb5-1.9/krb5-1.9.5.html#announcement


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