CVE DATABASE / CVE-2009-4565
CVE-2009-4565
CVSS 7.5 · HIGH
Summary
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 2.0 breakdown
| Base score | 7.5 (HIGH) |
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Confidentiality | PARTIAL |
| Integrity | PARTIAL |
| Availability | PARTIAL |
Weakness type (CWE)
Affected products
Sendmail sendmail
Check this CVE live
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
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/37998
- 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/8.14.4
- http://www.vupen.com/english/advisories/2009/3661
Data: NIST NVD. NVD last modified 2026-04-23. Always verify against the vendor advisory before acting.