CVE-2009-5138

Public Exploit

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.

Category

5.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.37% Top 25%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/57321 third party advisory
http://secunia.com/advisories/57260 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00020.html vendor advisory
http://secunia.com/advisories/57274 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00000.html vendor advisory
http://article.gmane.org/gmane.comp.security.oss.general/12223 mailing list
http://rhn.redhat.com/errata/RHSA-2014-0247.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00003.html vendor advisory
http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351/focus=3361 mailing list
https://gitorious.org/gnutls/gnutls/commit/c8dcbedd1fdc312f5b1a70fcfbc1afe235d800cd patch exploit
http://secunia.com/advisories/57254 third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1069301
http://thread.gmane.org/gmane.comp.security.oss.general/12127 mailing list

Frequently Asked Questions

What is the severity of CVE-2009-5138?
CVE-2009-5138 has been scored as a medium severity vulnerability.
How to fix CVE-2009-5138?
To fix CVE-2009-5138, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-5138 being actively exploited in the wild?
It is possible that CVE-2009-5138 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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