What’s Vulnerable › Vulnerabilities

CVE-2016-7444

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-09-27 · updated 2026-06-17
• Weakness: CWE-264

Description

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.

Affected products

• [UNKNOWN] gnutls: through 3.4.14; 3.5.0, 3.5.1, 3.5.2, 3.5.3

References

• http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html
• http://www.securityfocus.com/bid/92893
• https://access.redhat.com/errata/RHSA-2017:2292
• https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9
• https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html
• https://www.gnutls.org/security.html
• http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html
• http://www.securityfocus.com/bid/92893
• https://access.redhat.com/errata/RHSA-2017:2292
• https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9
• https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html
• https://www.gnutls.org/security.html

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