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Fencer Intel
medium 5.8

CVE-2014-1959 json

lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows rem…

published 2014-03-06 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-2012

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.4%
EPSS 3.4% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates.

Patch / fix

  • gnutls28 Debian 14, Debian 13, Debian 12 3.2.11-1

debian advisories DEBIAN-CVE-2014-1959

  • gnutls26 Ubuntu 14.04 LTS 2.12.23-12ubuntu1

ubuntu advisories UBUNTU-CVE-2014-1959

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 openSUSE Tumbleweed 3.4.15-1.1

opensuse advisories openSUSE-SU-2024:10105-1

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-2014-1959 updated cvss 5.8

gnutls: incorrect handling of V1 intermediate certificates (GNUTLS-SA-2014-1)

  • Red Hat Enterprise Linux 5 gnutls Red Hat Enterprise Linux 6 gnutls, gnutls-guile, gnutls-utils, mingw32-gnutls Red Hat Enterprise Linux 7 gnutls, gnutls-c++, gnutls-dane, 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

Exploit prediction

3.40% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • gitorious.org https://www.gitorious.org/gnutls/gnutls/commit/b1abfe3d182d68539900092eb42fc62cf1bb7e7c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Classification

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

References

Sources

Fencer Intel 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.