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Fencer Intel
critical 9.8

CVE-2014-1524 json

The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, a…

published 12y ago modified 4mo ago also EUVD-2014-1600

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.7%
EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object.

Patch / fix

  • mozilla firefox 24.5, 29.0
  • mozilla seamonkey 2.26
  • mozilla thunderbird 24.5
  • firefox Ubuntu 14.04 LTS 29.0+build1-0ubuntu0.14.04.2
  • thunderbird Ubuntu 14.04 LTS 1:24.5.0+build1-0ubuntu0.14.04.1

ubuntu advisories UBUNTU-CVE-2014-1524

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

  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 24.5.0-1.el5_10
  • thunderbird RHEL 6 24.5.0-1.el6_5
  • firefox RHEL 5 24.5.0-1.el5_10
  • firefox RHEL 6 24.5.0-1.el6_5

red hat advisories RHSA-2014:0449RHSA-2014:0448

  • 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-2014-1524 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.

Check with Fencer

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-2014-1524 updated cvss 6.8

Mozilla: Buffer overflow when using non-XBL object as XBL (MFSA 2014-38)

  • Red Hat Enterprise Linux (v. 5 server) firefox 24.5.0-1.el5_10 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 24.5.0-1.el5_10, thunderbird 24.5.0-1.el5_10 Red Hat Enterprise Linux Desktop (v. 6) firefox 24.5.0-1.el6_5, thunderbird 24.5.0-1.el6_5 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 24.5.0-1.el6_5
    fixed: vendor fix RHSA-2014:0448
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 24.5.0-1.el5_10
    fixed: vendor fix RHSA-2014:0449
  • Red Hat Enterprise Linux Server (v. 6) firefox 24.5.0-1.el6_5
    fixed: vendor fix RHSA-2014:0448
  • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird 24.5.0-1.el6_5
    fixed: vendor fix RHSA-2014:0449
  • Red Hat Enterprise Linux Workstation (v. 6) firefox 24.5.0-1.el6_5, thunderbird 24.5.0-1.el6_5
    fixed: vendor fix RHSA-2014:0448

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

7.69% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=989183 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.