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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | gnutls +2 | 1.4.1-14.el5_10 | RHSA-2014:0247 |
Advisories 1
- RHSA-2014:0247 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- 57321 third-party-advisory
- 57260 third-party-advisory
- SUSE-SU-2014:0445 vendor-advisory
- 57274 third-party-advisory
- SUSE-SU-2014:0319 vendor-advisory
- [oss-security] 20140225 Re: Re: CVE Request - GnuTLS corrects flaw in certificate verification (3.1.x/3.2.x) mailing-list
- RHSA-2014:0247 vendor-advisory
- SUSE-SU-2014:0320 vendor-advisory
- SUSE-SU-2014:0322 vendor-advisory
- [gnutls-devel] 20090109 Re: gnutls fails to use Verisign CA cert without a Basic Constraint mailing-list
- https://gitorious.org/gnutls/gnutls/commit/c8dcbedd1fdc312f5b1a70fcfbc1afe235d800cd
- 57254 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1069301
- [oss-security] 20140227 Re: CVE Request - GnuTLS corrects flaw in certificate verification (3.1.x/3.2.x) mailing-list