Vulnerability Description
sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sendmail | Sendmail | <= 8.14.3 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html
- http://marc.info/?l=bugtraq&m=126953289726317&w=2
- http://secunia.com/advisories/37998Vendor Advisory
- http://secunia.com/advisories/38314
- http://secunia.com/advisories/38915
- http://secunia.com/advisories/39088
- http://secunia.com/advisories/40109
- http://secunia.com/advisories/43366
- http://security.gentoo.org/glsa/glsa-201206-30.xml
- http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1
- http://www.debian.org/security/2010/dsa-1985
- http://www.redhat.com/support/errata/RHSA-2011-0262.html
- http://www.securityfocus.com/bid/37543
- http://www.sendmail.org/releases/8.14.4Patch
- http://www.vupen.com/english/advisories/2009/3661PatchVendor Advisory
FAQ
What is CVE-2009-4565?
CVE-2009-4565 is a vulnerability with a CVSS score of 7.5 (HIGH). sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP ser...
How severe is CVE-2009-4565?
CVE-2009-4565 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-4565?
Check the references section above for vendor advisories and patch information. Affected products include: Sendmail Sendmail.