CVE-2009-3767
openldap openldap2.3 - SSL certificate
EPSS 2.2%
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.
How to fix CVE-2009-3767
To remediate CVE-2009-3767, upgrade the affected package to a fixed version below.
- Debian/openldap—upgrade to 2.4.17-2.1 or later
- —upgrade to 2.4.11-1+lenny1 or later
- —upgrade to 2.3.30-5+etch3 or later
Is CVE-2009-3767 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.4.17-2.1
- from 0, < 2.4.11-1+lenny1
- from 0, < 2.3.30-5+etch3