CVE-2016-7444
First published: Thu Sep 08 2016(Updated: )
It was found an issue in certificate validation using OCSP responses caused by not verifying the serial length, which can falsely report a certificate as valid. Upstream patch: <a href="https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9">https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9</a> External References: <a href="https://www.gnutls.org/security.html">https://www.gnutls.org/security.html</a> <a href="https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html">https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html</a>
Credit: security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/gnutls | <3.4.15 | 3.4.15 |
| redhat/gnutls | <3.5.4 | 3.5.4 |
| GnuTLS | <=3.4.14 | |
| GnuTLS | =3.5.0 | |
| GnuTLS | =3.5.1 | |
| GnuTLS | =3.5.2 | |
| GnuTLS | =3.5.3 | |
| debian/gnutls28 | 3.7.1-5+deb11u5 3.7.1-5+deb11u7 3.7.9-2+deb12u3 3.7.9-2+deb12u4 3.8.9-2 |
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Reference Links
- https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html
- https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9
- https://www.gnutls.org/security.html
- http://www.securityfocus.com/bid/92893
- http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html
- https://access.redhat.com/errata/RHSA-2017:2292
- https://launchpad.net/bugs/cve/CVE-2016-7444
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1374269
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1374270
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1374267
- http://seclists.org/oss-sec/2016/q3/549
- https://bugzilla.redhat.com/show_bug.cgi?id=1374266
- https://gnutls.org/security.html#GNUTLS-SA-2016-3
- http://lists.gnutls.org/pipermail/gnutls-devel/2016-September/008146.html
- https://www.openwall.com/lists/oss-security/2016/09/18/3
- https://security-tracker.debian.org/tracker/CVE-2016-7444
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7444
- https://nvd.nist.gov/vuln/detail/CVE-2016-7444
- https://ubuntu.com/security/CVE-2016-7444
Frequently Asked Questions
What is the severity of CVE-2016-7444?
CVE-2016-7444 is considered a critical vulnerability due to the potential for certificate validation bypass.
How do I fix CVE-2016-7444?
To mitigate CVE-2016-7444, upgrade GnuTLS to version 3.4.15 or later, or 3.5.4 or later.
What software is affected by CVE-2016-7444?
CVE-2016-7444 affects multiple versions of GnuTLS including versions prior to 3.4.15 and certain versions of 3.5.x.
What are the consequences of CVE-2016-7444?
Exploiting CVE-2016-7444 may allow attackers to cause applications to incorrectly validate revoked certificates.
Is there a patch available for CVE-2016-7444?
Yes, a patch for CVE-2016-7444 has been released and is available in the software updates for affected GnuTLS versions.
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