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Fencer Intel
medium 4.3

CVE-2014-1491 json

Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird be…

published 2014-02-06 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-1567

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, SeaMonkey before 2.24, and other products, does not properly restrict public values in Diffie-Hellman key exchanges, which makes it easier for remote attackers to bypass cryptographic protection mechanisms in ticket handling by leveraging use of a certain value.

Patch / fix

  • mozilla firefox 24.3, 27.0
  • mozilla network_security_services 3.15.4
  • mozilla seamonkey 2.24
  • mozilla thunderbird 24.3.0
  • oracle enterprise_manager_ops_center 12.1.4
  • nss Debian 14, Debian 13, Debian 12 2:3.15.4-1

debian advisories DEBIAN-CVE-2014-1491

  • nss RHEL 6 3.16.1-4.el6_5
  • nspr RHEL 6 4.10.6-1.el6_5
  • nss-util RHEL 6 3.16.1-1.el6_5
  • nss-tools RHEL 6 3.16.1-4.el6_5
  • nss-sysinit RHEL 6 3.16.1-4.el6_5
  • nss RHEL 5 3.16.1-2.el5
  • nss-tools RHEL 5 3.16.1-2.el5
  • rhev-hypervisor6 RHEL 6 6.5-20140725.0.el6ev

red hat advisories RHSA-2014:0917RHSA-2014:1246RHSA-2014:0979

  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1
  • mozilla-nss openSUSE Tumbleweed 3.26.2-1.1

opensuse advisories openSUSE-SU-2024:10071-1openSUSE-SU-2024:10230-1openSUSE-SU-2024:10451-1

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-2014-1491 updated cvss 4.3

nss: Do not allow p-1 as a public DH value (MFSA 2014-12)

  • Red Hat Enterprise Linux (v. 5 server) nss 3.16.1-2.el5, nss-tools 3.16.1-2.el5 Red Hat Enterprise Linux Desktop (v. 5 client) nss 3.16.1-2.el5, nss-tools 3.16.1-2.el5
    fixed: vendor fix RHSA-2014:1246
  • Red Hat Enterprise Linux Desktop (v. 6) nss 3.16.1-4.el6_5, nspr 4.10.6-1.el6_5, nss-util 3.16.1-1.el6_5, nss-tools 3.16.1-4.el6_5, nss-sysinit 3.16.1-4.el6_5 Red Hat Enterprise Linux Desktop Optional (v. 6) nss 3.16.1-4.el6_5, nspr 4.10.6-1.el6_5, nss-util 3.16.1-1.el6_5
    fixed: vendor fix RHSA-2014:0917
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) nss 3.16.1-2.el5
    fixed: vendor fix RHSA-2014:1246
  • Red Hat Enterprise Linux HPC Node (v. 6) nss 3.16.1-4.el6_5, nspr 4.10.6-1.el6_5, nss-util 3.16.1-1.el6_5, nss-tools 3.16.1-4.el6_5, nss-sysinit 3.16.1-4.el6_5 Red Hat Enterprise Linux HPC Node Optional (v. 6) nss 3.16.1-4.el6_5, nspr 4.10.6-1.el6_5, nss-util 3.16.1-1.el6_5 Red Hat Enterprise Linux Server (v. 6) nss 3.16.1-4.el6_5, nspr 4.10.6-1.el6_5, nss-util 3.16.1-1.el6_5, nss-tools 3.16.1-4.el6_5, nss-sysinit 3.16.1-4.el6_5 Red Hat Enterprise Linux Server Optional (v. 6) nss 3.16.1-4.el6_5 Red Hat Enterprise Linux Workstation (v. 6) nss 3.16.1-4.el6_5, nspr 4.10.6-1.el6_5, nss-util 3.16.1-1.el6_5, nss-tools 3.16.1-4.el6_5, nss-sysinit 3.16.1-4.el6_5 Red Hat Enterprise Linux Workstation Optional (v. 6) nss 3.16.1-4.el6_5
    fixed: vendor fix RHSA-2014:0917
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.5-20140725.0.el6ev
    fixed: vendor fix RHSA-2014:0979
  • Red Hat Enterprise Linux 7 nss, nss-tools, nss-sysinit
    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

4.60% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=934545 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-326 Inadequate Encryption Strength

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.