Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openldap | Openldap | < 2.4.18 |
| Openssl | Openssl | All versions |
| Apple | Mac Os X | < 10.6.2 |
| Fedoraproject | Fedora | 11 |
Related Weaknesses (CWE)
References
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.htmlMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/036138.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.htmlMailing ListThird Party Advisory
- http://marc.info/?l=oss-security&m=125198917018936&w=2Third Party Advisory
- http://marc.info/?l=oss-security&m=125369675820512&w=2Third Party Advisory
- http://secunia.com/advisories/38769Third Party Advisory
- http://secunia.com/advisories/40677Third Party Advisory
- http://security.gentoo.org/glsa/glsa-201406-36.xmlThird Party Advisory
- http://support.apple.com/kb/HT3937Broken Link
- http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_o.c.diff?r1=1.8&rPatchVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0543.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2011-0896.htmlThird Party Advisory
- http://www.vupen.com/english/advisories/2009/3056Third Party Advisory
- http://www.vupen.com/english/advisories/2010/1858Third Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Third Party Advisory
FAQ
What is CVE-2009-3767?
CVE-2009-3767 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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...
How severe is CVE-2009-3767?
CVE-2009-3767 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-3767?
Check the references section above for vendor advisories and patch information. Affected products include: Openldap Openldap, Openssl Openssl, Apple Mac Os X, Fedoraproject Fedora.