Bug 530715 (CVE-2009-3767) - CVE-2009-3767 OpenLDAP: Doesn't properly handle NULL character in subject Common Name
Summary: CVE-2009-3767 OpenLDAP: Doesn't properly handle NULL character in subject Com...
Status: CLOSED ERRATA
Alias: CVE-2009-3767
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: http://www.openldap.org/devel/cvsweb....
Whiteboard: source=bugzilla,reported=20090821,pub...
Keywords: Security
Depends On: 537895 549872 560912 606399 606400
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-10-24 12:55 UTC by Jan Lieskovsky
Modified: 2011-06-23 07:37 UTC (History)
6 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2010-12-03 10:46:00 UTC


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0198 normal SHIPPED_LIVE Moderate: openldap security and bug fix update 2010-03-29 13:22:42 UTC
Red Hat Product Errata RHSA-2010:0543 normal SHIPPED_LIVE Moderate: openldap security update 2010-07-20 16:34:29 UTC
Red Hat Product Errata RHSA-2011:0896 normal SHIPPED_LIVE Moderate: JBoss Enterprise Web Server 1.0.2 update 2011-06-22 23:16:28 UTC

Description Jan Lieskovsky 2009-10-24 12:55:08 UTC
Common Vulnerabilities and Exposures assigned an identifier CVE-2009-3767 to
the following vulnerability:

libraries/libldap/tls_o.c in OpenLDAP, when OpenSSL is used, does not
properly handle a '\0' character in a domain name in the subject's
Common Name (CN) field of an X.509 certificate, which allows
man-in-the-middle attackers to spoof arbitrary SSL servers via a
crafted certificate issued by a legitimate Certification Authority, a
related issue to CVE-2009-2408.

References:
-----------
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3767
http://marc.info/?l=oss-security&m=125198917018936&w=2
http://marc.info/?l=oss-security&m=125369675820512&w=2
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html

Upstream patch:
---------------
http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_o.c.diff?r1=1.8&r2=1.11&f=h

Comment 1 Jan Lieskovsky 2009-10-24 12:57:02 UTC
This issue affects the versions of the openldap package, as shipped
with Red Hat Enterprise Linux 3, 4, and 5.

This issue affects the versions of the openldap package, as shipped
with Fedora releases of 10 (openldap-2.4.12-1.fc10),
11 (openldap-2.4.15-6.fc11) and as scheduled to appear in Fedora
of release 12 (openldap-2.4.18-5.fc12).

Please fix.

Comment 9 Vincent Danen 2009-11-25 17:38:44 UTC
This issue affects openldap versions as shipped in Red Hat Enterprise Linux 3, 4, and 5.

Due to how OpenLDAP is typically deployed, the exposure of this flaw is limited.  A malicious attacker would need to perform attacks on a local network to perform a Man-in-the-Middle attack (ARP spoofing, fake AP, control over an intermediate node, or DNS hijacking), as well as having a crafted certificate that OpenLDAP would see as valid from an authorized and trusted Certificate Authority.

This was rated as having moderate security impact.  Future openldap updates may address this flaw.  We do not currently plan to release updates to address only this flaw.

Comment 12 Fedora Update System 2010-03-02 01:03:22 UTC
openldap-2.4.15-7.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 13 errata-xmlrpc 2010-03-30 08:04:50 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2010:0198 https://rhn.redhat.com/errata/RHSA-2010-0198.html

Comment 16 errata-xmlrpc 2010-07-20 16:34:53 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4

Via RHSA-2010:0543 https://rhn.redhat.com/errata/RHSA-2010-0543.html

Comment 17 Vincent Danen 2010-07-20 21:20:01 UTC
Statement:

This issue was addressed in the openldap packages as shipped with Red Hat Enterprise Linux 5 and 4 via: https://rhn.redhat.com/errata/RHSA-2010-0198.html and https://rhn.redhat.com/errata/RHSA-2010-0543.html respectively.

The Red Hat Security Response Team has rated this issue as having moderate security impact, a future openldap update may address this flaw in Red Hat Enterprise Linux 3.

Comment 18 errata-xmlrpc 2011-06-22 23:17:55 UTC
This issue has been addressed in following products:

  JBoss Enterprise Web Server 1.0

Via RHSA-2011:0896 https://rhn.redhat.com/errata/RHSA-2011-0896.html


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