PT-2016-7335 · Gnu+5 · Gnutls+5

Stefan Bã¼Hler · Published 2016-09-09 · Updated 2018-01-05 · CVE-2016-7444

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions GnuTLS versions prior to 3.4.15 GnuTLS versions 3.5.x prior to 3.5.4

Description The issue concerns the gnutls ocsp resp check crt function, which does not verify the serial length of an OCSP response. This could potentially allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls malloc.

Recommendations For GnuTLS versions prior to 3.4.15, update to version 3.4.15 or later. For GnuTLS versions 3.5.x prior to 3.5.4, update to version 3.5.4 or later.

Exploit

Fix

Weakness Enumeration

CWE-264

Related Identifiers

ALT-PU-2016-1957

CESA-2017_2292

CVE-2016-7444

MGASA-2016-0326

OPENSUSE-SU-2017_0386-1

RHSA-2017:2292

RHSA-2017_2292

SUSE-SU-2017:0348-1

USN-3183-1

Affected Products

Alt Linux

Centos

Gnutls

Red Hat

Suse

Ubuntu

References · 72

• 🔥 https://github.com/cujanovic/CVE-2016-8610-PoC · Exploit
• https://ubuntu.com/security/CVE-2016-8610 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5337 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2017:0348-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2016-0326 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5335 · Security Note
• https://ubuntu.com/security/CVE-2017-5334 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2017:2292 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5336 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2016-0326.html · Security Note
• https://ubuntu.com/security/CVE-2017-5337 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7507 · Security Note
• https://osv.dev/vulnerability/CVE-2016-7444 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-7444 · Security Note