How severe is CVE-2009-3767?

This vulnerability has a severity rating of MEDIUM with a CVSS score of 4.3 out of 10.

What type of vulnerability is CVE-2009-3767?

This is classified as CWE-295, which is a common weakness in software security.

CVE-2009-3767 - MEDIUM Severity | CVSS 4.3

Vulnerability 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.

Related Vulnerabilities

CVE-2010-1378

CRITICAL

CVSS:9.8(Critical)

OpenSSL in Apple Mac OS X 10.6.x before 10.6.5 does not properly perform arithmetic, which allows remote attackers to bypass X.509 certificate authentication via an arbitrary certificate issued by a l...

CWE-2952010

CVE-2010-4533

CRITICAL

CVSS:9.8(Critical)

offlineimap before 6.3.4 added support for SSL server certificate validation but it is still possible to use SSL v2 protocol, which is a flawed protocol with multiple security deficiencies.

CWE-2952010

CVE-2015-2320

CRITICAL

CVSS:9.8(Critical)

The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to client-side SSLv2 fallback.

CWE-2952015

CVE-2015-3886

CRITICAL

CVSS:9.8(Critical)

libinfinity before 0.6.6-1 does not validate expired SSL certificates, which allows remote attackers to have unspecified impact via unknown vectors.

CWE-2952015

CVE-2015-7826

CRITICAL

CVSS:9.8(Critical)

botan 1.11.x before 1.11.22 improperly handles wildcard matching against hostnames, which might allow remote attackers to have unspecified impact via a valid X.509 certificate, as demonstrated by acce...

CWE-2952015

CVE-2016-1000030

CRITICAL

CVSS:9.8(Critical)

Pidgin version <2.11.0 contains a vulnerability in X.509 Certificates imports specifically due to improper check of return values from gnutls_x509_crt_init() and gnutls_x509_crt_import() that can resu...

CWE-2952016