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sendmail: incorrect verification of SSL certificate with NUL in name

🗓️ 16 Feb 2011 14:34:00Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 1 Views

Sendmail before 8.14.4 misverifies certificates with a null in the Common Name, enabling MITM and unauthorized access.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux4i386sendmail0:8.13.1-6.el4sendmail-0:8.13.1-6.el4.i386.rpm
Red Hat Enterprise Linux4ia64sendmail0:8.13.1-6.el4sendmail-0:8.13.1-6.el4.ia64.rpm
Red Hat Enterprise Linux4ppcsendmail0:8.13.1-6.el4sendmail-0:8.13.1-6.el4.ppc.rpm
Red Hat Enterprise Linux4s390sendmail0:8.13.1-6.el4sendmail-0:8.13.1-6.el4.s390.rpm
Red Hat Enterprise Linux4s390xsendmail0:8.13.1-6.el4sendmail-0:8.13.1-6.el4.s390x.rpm
Red Hat Enterprise Linux4x86_64sendmail0:8.13.1-6.el4sendmail-0:8.13.1-6.el4.x86_64.rpm
Red Hat Enterprise Linux4i386sendmail-cf0:8.13.1-6.el4sendmail-cf-0:8.13.1-6.el4.i386.rpm
Red Hat Enterprise Linux4ia64sendmail-cf0:8.13.1-6.el4sendmail-cf-0:8.13.1-6.el4.ia64.rpm
Red Hat Enterprise Linux4ppcsendmail-cf0:8.13.1-6.el4sendmail-cf-0:8.13.1-6.el4.ppc.rpm
Red Hat Enterprise Linux4s390sendmail-cf0:8.13.1-6.el4sendmail-cf-0:8.13.1-6.el4.s390.rpm
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21 Nov 2025 17:37Current
7High risk
Vulners AI Score7
CVSS 3.15.9
CVSS 27.5
EPSS0.01855
1