CVE-2009-5138

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-03-07 · updated 2026-06-16
Weakness: CWE-264

Description

GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates, a different vulnerability than CVE-2014-1959.

Affected products

[UNKNOWN] gnutls: through 2.7.5; 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4

References

http://article.gmane.org/gmane.comp.security.oss.general/12223
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00020.html
http://rhn.redhat.com/errata/RHSA-2014-0247.html
http://secunia.com/advisories/57254
http://secunia.com/advisories/57260
http://secunia.com/advisories/57274
http://secunia.com/advisories/57321
http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351/focus=3361
http://thread.gmane.org/gmane.comp.security.oss.general/12127

Get alerted when CVE-2009-5138 or the next vulnerability affects your stack