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    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.

    Published:Aug 10, 2009
    Last Modified:Apr 23, 2026
    EPS:Oct 23, 2009
    EPSS Score:0.022
    CVSS Score:4.3

    Affected Products

    Vendor
    Apple
    Product
    Mac Os X
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Openldap
    Product
    Openldap
    Vendor
    Openssl
    Product
    Openssl
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Enterprise Web Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

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    References

    http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
    http://lists.fedoraproject.org/pipermail/package-announce/2010-March/036138.html
    http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
    http://marc.info/?l=oss-security&m=125198917018936&w=2
    http://marc.info/?l=oss-security&m=125369675820512&w=2
    http://secunia.com/advisories/38769
    http://secunia.com/advisories/40677
    http://security.gentoo.org/glsa/glsa-201406-36.xml
    http://support.apple.com/kb/HT3937
    http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_o.c.diff?r1=1.8&r2=1.11&f=h
    http://www.redhat.com/support/errata/RHSA-2010-0543.html
    http://www.redhat.com/support/errata/RHSA-2011-0896.html
    http://www.vupen.com/english/advisories/2009/3056
    http://www.vupen.com/english/advisories/2010/1858
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11178
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7274
    http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
    http://lists.fedoraproject.org/pipermail/package-announce/2010-March/036138.html
    http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
    http://marc.info/?l=oss-security&m=125198917018936&w=2
    http://marc.info/?l=oss-security&m=125369675820512&w=2
    http://secunia.com/advisories/38769
    http://secunia.com/advisories/40677
    http://security.gentoo.org/glsa/glsa-201406-36.xml
    http://support.apple.com/kb/HT3937
    http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_o.c.diff?r1=1.8&r2=1.11&f=h
    http://www.redhat.com/support/errata/RHSA-2010-0543.html
    http://www.redhat.com/support/errata/RHSA-2011-0896.html
    http://www.vupen.com/english/advisories/2009/3056
    http://www.vupen.com/english/advisories/2010/1858
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11178
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7274

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High