CVE-2009-4565

medium

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.

References

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11822

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10255

https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-4531

http://www.vupen.com/english/advisories/2011/0415

http://www.vupen.com/english/advisories/2010/1386

http://www.vupen.com/english/advisories/2010/0719

http://www.vupen.com/english/advisories/2009/3661

http://www.sendmail.org/releases/8.14.4

http://www.securityfocus.com/bid/37543

http://www.redhat.com/support/errata/RHSA-2011-0262.html

http://www.debian.org/security/2010/dsa-1985

http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1

http://security.gentoo.org/glsa/glsa-201206-30.xml

http://secunia.com/advisories/43366

http://secunia.com/advisories/40109

http://secunia.com/advisories/39088

http://secunia.com/advisories/38915

http://secunia.com/advisories/38314

http://secunia.com/advisories/37998

http://marc.info/?l=bugtraq&m=126953289726317&w=2

http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html

Details

Source: Mitre, NVD

Published: 2010-01-04

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity: Medium

EPSS

EPSS: 0.02395