Access Restriction Bypass Affecting gnutls package, versions <3.4.5-r1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE32-GNUTLS-1087014
- published18 Mar 2021
- disclosed27 Sept 2016
Introduced: 27 Sep 2016
CVE-2016-7444 (opens in a new tab)How to fix?
Upgrade Alpine:3.2 gnutls to version 3.4.5-r1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by Alpine.
See How to fix? for Alpine:3.2 relevant fixed versions and status.
The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.
References
- http://www.securityfocus.com/bid/92893
- https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9
- https://www.gnutls.org/security.html
- https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html
- https://access.redhat.com/errata/RHSA-2017:2292
- http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html