National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2009-3767 Detail


libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4, and possibly other versions, 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.

Source:  MITRE      Last Modified:  10/23/2009

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
(AV:N/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (07/20/2010)

Red Hat is aware of this issue and is tracking it via the following bug: This issue was addressed in the openldap packages as shipped with Red Hat Enterprise Linux 5 and 4 via: and 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.

Official Statement from OpenLDAP (10/30/2009)

OpenLDAP reported this issue and published a patch for it on 2009-07-30. The patch was included in OpenLDAP 2.4.18 which was released on 2009-09-06. The current release of OpenLDAP is available from the following location:

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name External Source APPLE APPLE-SA-2009-11-09-1 External Source FEDORA FEDORA-2010-0752 External Source SUSE SUSE-SR:2009:016 External Source MLIST [oss-security] 20090903 More CVE-2009-2408 like issues External Source MLIST [oss-security] 20090923 Re: More CVE-2009-2408 like issues External Source GENTOO GLSA-201406-36 External Source CONFIRM External Source CONFIRM External Source REDHAT RHSA-2010:0543 External Source REDHAT RHSA-2011:0896 External Source VUPEN ADV-2009-3056 External Source VUPEN ADV-2010-1858 External Source OVAL oval:org.mitre.oval:def:11178 External Source OVAL oval:org.mitre.oval:def:7274

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Technical Details

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