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Vulnerability Details : CVE-2009-3767

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.
Publish Date : 2009-10-23 Last Update Date : 2017-09-18
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 310

- Vendor Statements

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:
Source: OpenLDAP
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.
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
AV:N/AC:H/Au:N/C:N/I:P/A:N 2009-08-21 2009-08-10
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @

- Related OVAL Definitions

Title Definition Id Class Family
DEPRECATED: ELSA-2010-0198 -- openldap security and bug fix update (moderate) oval:org.mitre.oval:def:28271 unix
DSA-1943 openldap openldap2.3 -- insufficient input validation oval:org.mitre.oval:def:7899 unix
DSA-1943-1 openldap openldap2.3 - SSL certificate oval:org.mitre.oval:def:20225 unix
ELSA-2010:0198: openldap security and bug fix update (Moderate) oval:org.mitre.oval:def:23047 unix
libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4, and possibly other versions, when OpenSSL is used, does not properly ... oval:org.mitre.oval:def:11178 unix
RHSA-2010:0198: openldap security and bug fix update (Moderate) oval:org.mitre.oval:def:21799 unix
RHSA-2010:0198: openldap security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20100198 unix
RHSA-2010:0543: openldap security update (Moderate) oval:com.redhat.rhsa:def:20100543 unix
VMware ESX, Service Console update for OpenLDAP. oval:org.mitre.oval:def:7274 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-3767

# Product Type Vendor Product Version Update Edition Language
1 Application Openldap Openldap Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Openldap Openldap 1

- References For CVE-2009-3767
APPLE APPLE-SA-2009-11-09-1
SUSE SUSE-SR:2009:016
MLIST [oss-security] 20090903 More CVE-2009-2408 like issues
MLIST [oss-security] 20090923 Re: More CVE-2009-2408 like issues
VUPEN ADV-2009-3056
VUPEN ADV-2010-1858
REDHAT RHSA-2011:0896
REDHAT RHSA-2010:0543

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used TOGETHER WITH(AND)

- Metasploit Modules Related To CVE-2009-3767

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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