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Fencer Vulns
high 7.5

CVE-2016-7444 json

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…

published 2016-09-27 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8297

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

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.

Patch / fix

  • gnutls28 Debian 14, Debian 13, Debian 12 3.5.3-4

debian advisories DEBIAN-CVE-2016-7444

  • gnutls28 Ubuntu 16.04 LTS 3.4.10-4ubuntu1.2

ubuntu advisories UBUNTU-CVE-2016-7444

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnutls RHEL 7 3.3.26-9.el7
  • gnutls-c++ RHEL 7 3.3.26-9.el7
  • gnutls-dane RHEL 7 3.3.26-9.el7
  • gnutls-utils RHEL 7 3.3.26-9.el7

red hat advisories RHSA-2017:2292

  • gnutls SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +6 more 3.2.15-16.1

suse advisories SUSE-SU-2017:0348-1

  • gnutls Alpine 3.2 3.4.5-r1

alpine advisories ALPINE-CVE-2016-7444

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • lib32-gnutls Arch Linux 3.4.15-1
  • gnutls Arch Linux 3.4.15-1

arch linux advisories AVG-17AVG-26

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-7444 updated cvss 5.3

gnutls: Incorrect certificate validation when using OCSP responses (GNUTLS-SA-2016-3)

  • Red Hat Enterprise Linux Client (v. 7) gnutls 3.3.26-9.el7, gnutls-dane 3.3.26-9.el7, gnutls-utils 3.3.26-9.el7 Red Hat Enterprise Linux Client Optional (v. 7) gnutls-c++ 3.3.26-9.el7 Red Hat Enterprise Linux ComputeNode (v. 7) gnutls 3.3.26-9.el7, gnutls-dane 3.3.26-9.el7, gnutls-utils 3.3.26-9.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) gnutls-c++ 3.3.26-9.el7 Red Hat Enterprise Linux Server (v. 7) gnutls 3.3.26-9.el7, gnutls-c++ 3.3.26-9.el7, gnutls-dane 3.3.26-9.el7, gnutls-utils 3.3.26-9.el7 Red Hat Enterprise Linux Workstation (v. 7) gnutls 3.3.26-9.el7, gnutls-c++ 3.3.26-9.el7, gnutls-dane 3.3.26-9.el7, gnutls-utils 3.3.26-9.el7
    fixed: vendor fix RHSA-2017:2292
  • Red Hat Enterprise Linux 5 gnutls Red Hat Enterprise Linux 6 gnutls, gnutls-guile, gnutls-utils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-19-155-01 updated cvss 7.5

PHOENIX CONTACT PLCNext AXC F 2152

  • Phoenix Contact AXC F 2152 2404267 version 1.x, 1046568 (Starterkit) version 1.x
    affected: vendor fix, mitigation “Phoenix Contact recommends affected users update to firmware release 2019.0 LTS or later, update to PLCNext Engineer release 2019.0 LTS or later, and apply the following specific mitigations below:” phoenixcontact.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.44% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.