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Fencer Intel
medium 6.8

CVE-2014-3466 json

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before…

published 2014-06-03 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-3478

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.2%
EPSS 11.2% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

Patch / fix

  • gnutls28 Debian 14, Debian 13, Debian 12 3.2.15-1

debian advisories DEBIAN-CVE-2014-3466

  • gnutls26 Ubuntu 14.04 LTS 2.12.23-12ubuntu2.1
  • gnutls28 Ubuntu 14.04 LTS 3.2.11-2ubuntu1.1

ubuntu advisories UBUNTU-CVE-2014-3466

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 3.1.18-9.el7_0
  • gnutls-c++ RHEL 7 3.1.18-9.el7_0
  • gnutls-dane RHEL 7 3.1.18-9.el7_0
  • gnutls-utils RHEL 7 3.1.18-9.el7_0
  • rhev-hypervisor6 RHEL 6 6.5-20140624.0.el6ev
  • gnutls RHEL 5 1.4.1-16.el5_10
  • gnutls-utils RHEL 5 1.4.1-16.el5_10
  • gnutls RHEL 6 2.8.5-14.el6_5

red hat advisories RHSA-2014:0684RHSA-2014:0815RHSA-2014:0594RHSA-2014:0595

  • 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-2014-3466 updated cvss 6.8

gnutls: insufficient session id length check in _gnutls_read_server_hello (GNUTLS-SA-2014-3)

  • Red Hat Enterprise Linux 4 gnutls Red Hat Enterprise Linux 6 mingw32-gnutls
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux (v. 5 server) gnutls 1.4.1-16.el5_10, gnutls-utils 1.4.1-16.el5_10
    fixed: vendor fix RHSA-2014:0594
  • Red Hat Enterprise Linux Client (v. 7) gnutls 3.1.18-9.el7_0, gnutls-dane 3.1.18-9.el7_0, gnutls-utils 3.1.18-9.el7_0 Red Hat Enterprise Linux Client Optional (v. 7) gnutls-c++ 3.1.18-9.el7_0 Red Hat Enterprise Linux ComputeNode (v. 7) gnutls 3.1.18-9.el7_0, gnutls-dane 3.1.18-9.el7_0, gnutls-utils 3.1.18-9.el7_0 Red Hat Enterprise Linux ComputeNode Optional (v. 7) gnutls-c++ 3.1.18-9.el7_0
    fixed: vendor fix RHSA-2014:0684
  • Red Hat Enterprise Linux Desktop (v. 5 client) gnutls 1.4.1-16.el5_10, gnutls-utils 1.4.1-16.el5_10
    fixed: vendor fix RHSA-2014:0594
  • Red Hat Enterprise Linux Desktop (v. 6) gnutls 2.8.5-14.el6_5, gnutls-utils 2.8.5-14.el6_5 Red Hat Enterprise Linux Desktop Optional (v. 6) gnutls 2.8.5-14.el6_5, gnutls-guile 2.8.5-14.el6_5
    fixed: vendor fix RHSA-2014:0595
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) gnutls 1.4.1-16.el5_10
    fixed: vendor fix RHSA-2014:0594
  • Red Hat Enterprise Linux HPC Node (v. 6) gnutls 2.8.5-14.el6_5, gnutls-utils 2.8.5-14.el6_5 Red Hat Enterprise Linux HPC Node Optional (v. 6) gnutls 2.8.5-14.el6_5, gnutls-guile 2.8.5-14.el6_5 Red Hat Enterprise Linux Server (v. 6) gnutls 2.8.5-14.el6_5, gnutls-utils 2.8.5-14.el6_5
    fixed: vendor fix RHSA-2014:0595
  • Red Hat Enterprise Linux Server (v. 7) gnutls 3.1.18-9.el7_0, gnutls-c++ 3.1.18-9.el7_0, gnutls-dane 3.1.18-9.el7_0, gnutls-utils 3.1.18-9.el7_0
    fixed: vendor fix RHSA-2014:0684
show 4 more
  • Red Hat Enterprise Linux Server Optional (v. 6) gnutls 2.8.5-14.el6_5, gnutls-guile 2.8.5-14.el6_5 Red Hat Enterprise Linux Workstation (v. 6) gnutls 2.8.5-14.el6_5, gnutls-utils 2.8.5-14.el6_5
    fixed: vendor fix RHSA-2014:0595
  • Red Hat Enterprise Linux Workstation (v. 7) gnutls 3.1.18-9.el7_0, gnutls-c++ 3.1.18-9.el7_0, gnutls-dane 3.1.18-9.el7_0, gnutls-utils 3.1.18-9.el7_0
    fixed: vendor fix RHSA-2014:0684
  • Red Hat Enterprise Linux Workstation Optional (v. 6) gnutls 2.8.5-14.el6_5, gnutls-guile 2.8.5-14.el6_5
    fixed: vendor fix RHSA-2014:0595
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.5-20140624.0.el6ev
    fixed: vendor fix RHSA-2014:0815

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

11.22% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • gitorious.org https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfd referenced PoC, tagged "exploit" by a source, unverified
  • radare.today http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.