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Fencer Intel
high 7.5

CVE-2014-1581 json

Use-after-free vulnerability in DirectionalityUtils.cpp in Mozilla Firefox before 33.0, Firefox ESR 31.x before 31.2, and Thunderbird 31.x…

published 12y ago modified 4mo ago also EUVD-2014-1657

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Use-after-free vulnerability in DirectionalityUtils.cpp in Mozilla Firefox before 33.0, Firefox ESR 31.x before 31.2, and Thunderbird 31.x before 31.2 allows remote attackers to execute arbitrary code via text that is improperly handled during the interaction between directionality resolution and layout.

Patch / fix

  • firefox Ubuntu 14.04 LTS 33.0+build2-0ubuntu0.14.04.1
  • thunderbird Ubuntu 14.04 LTS 1:31.2.0+build2-0ubuntu0.14.04.1

ubuntu advisories UBUNTU-CVE-2014-1581

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

  • firefox RHEL 5 31.2.0-3.el5_11
  • firefox RHEL 6 31.2.0-3.el6_6
  • firefox RHEL 7 31.2.0-3.el7_0
  • xulrunner RHEL 7 31.2.0-1.el7_0
  • thunderbird RHEL 5 31.2.0-2.el5_11
  • thunderbird RHEL 6 31.2.0-3.el6_6

red hat advisories RHSA-2014:1635RHSA-2014:1647

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1openSUSE-SU-2024:10230-1

Is CVE-2014-1581 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2014-1581 updated cvss 6.8

Mozilla: Use-after-free interacting with text directionality (MFSA 2014-79)

  • Red Hat Enterprise Linux (v. 5 server) firefox 31.2.0-3.el5_11 Red Hat Enterprise Linux Client (v. 7) firefox 31.2.0-3.el7_0, xulrunner 31.2.0-1.el7_0 Red Hat Enterprise Linux Client Optional (v. 7) firefox 31.2.0-3.el7_0 Red Hat Enterprise Linux ComputeNode Optional (v. 7) xulrunner 31.2.0-1.el7_0 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 31.2.0-3.el5_11, thunderbird 31.2.0-2.el5_11 Red Hat Enterprise Linux Desktop (v. 6) firefox 31.2.0-3.el6_6, thunderbird 31.2.0-3.el6_6
    +10 more products
    Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 31.2.0-3.el6_6 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 31.2.0-3.el6_6 Red Hat Enterprise Linux Server (v. 6) firefox 31.2.0-3.el6_6 Red Hat Enterprise Linux Server (v. 7) firefox 31.2.0-3.el7_0, xulrunner 31.2.0-1.el7_0 Red Hat Enterprise Linux Server Optional (v. 6) firefox 31.2.0-3.el6_6, thunderbird 31.2.0-3.el6_6 Red Hat Enterprise Linux Server Optional (v. 7) firefox 31.2.0-3.el7_0, xulrunner 31.2.0-1.el7_0 Red Hat Enterprise Linux Workstation (v. 6) firefox 31.2.0-3.el6_6, thunderbird 31.2.0-3.el6_6 Red Hat Enterprise Linux Workstation (v. 7) firefox 31.2.0-3.el7_0, xulrunner 31.2.0-1.el7_0 Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 31.2.0-3.el6_6 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 31.2.0-3.el7_0
    fixed: vendor fix RHSA-2014:1635

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

4.06% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

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.