Permissions, Privileges, and Access Controls in GnuTLS - CVE-2009-5138
Published: March 7, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41959
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2009-5138
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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 software
GnuTLS
SUSE Linux
SUSE Linux
How to mitigate CVE-2009-5138
Install update from vendor's website.
External 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
- https://bugzilla.redhat.com/show_bug.cgi?id=1069301
- https://gitorious.org/gnutls/gnutls/commit/c8dcbedd1fdc312f5b1a70fcfbc1afe235d800cd