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Fencer Vulns
high 8.4

CVE-2024-29944 json

An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent proc…

published 2024-03-22 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-26918

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent process. Note: This vulnerability affects Desktop Firefox only, it does not affect mobile versions of Firefox. This vulnerability affects Firefox < 124.0.1 and Firefox ESR < 115.9.1.

Patch / fix

  • Mozilla Firefox 124, 124.0.1
  • Mozilla Firefox ESR 115.9.1
  • mozilla firefox_esr 115.9.1
  • firefox-esr Debian 12 115.9.1esr-1~deb12u1
  • firefox-esr Debian 14, Debian 13 115.9.1esr-1

debian advisories DEBIAN-CVE-2024-29944

  • firefox Ubuntu 20.04 LTS 124.0.1+build1-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2024-29944

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 7 115.9.1-1.el7_9
  • firefox RHEL 9 115.9.1-1.el9_3
  • firefox-x11 RHEL 9 115.9.1-1.el9_3
  • firefox RHEL 8 115.9.1-1.el8_9
  • firefox RHEL 8.6 EUS 115.9.1-1.el8_6
  • firefox RHEL 8.2 TUS, RHEL 8.2 E4S, RHEL 8.2 AUS 115.9.1-1.el8_2
  • firefox RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 115.9.1-1.el8_4
  • firefox RHEL 8.8 EUS 115.9.1-1.el8_8

red hat advisories RHSA-2024:1489RHSA-2024:1490RHSA-2024:1491RHSA-2024:1488RHSA-2024:1487RHSA-2024:1486

  • MozillaFirefox SLES for SAP 15 SP4, SLES for SAP 15 SP3, SLES for SAP 15 SP2 +10 more 115.9.1-150200.152.131.1
  • MozillaFirefox SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 115.9.1-112.206.1

suse advisories SUSE-SU-2024:1002-1SUSE-SU-2024:1000-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 124.0.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:13795-1

  • firefox AlmaLinux 8 115.9.1-1.el8_9.alma.1
  • firefox AlmaLinux 9 115.9.1-1.el9_3.alma.1
  • firefox-x11 AlmaLinux 9 115.9.1-1.el9_3.alma.1

almalinux advisories ALSA-2024:1484ALSA-2024:1485

  • firefox Rocky Linux 8 115.9.1-1.el8_9

rocky linux advisories RLSA-2024:1484

  • mozjs Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 115.9.1-r0
  • mozjs115 Alpine 3.20, Alpine 3.19 115.9.1-r0
  • firefox-esr Alpine 3.19, Alpine 3.18 115.9.1-r0

alpine advisories ALPINE-CVE-2024-29944

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2024-29944 updated cvss 8.8

Mozilla: Privileged JavaScript Execution via Event Handlers

  • Red Hat Enterprise Linux 6 firefox
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 firefox-flatpak-container
    affected: no fix available
  • Red Hat Enterprise Linux AppStream (v. 8) firefox 115.9.1-1.el8_9
    fixed: vendor fix RHSA-2024:1484
  • Red Hat Enterprise Linux AppStream (v. 9) firefox 115.9.1-1.el9_3, firefox-x11 115.9.1-1.el9_3
    fixed: vendor fix RHSA-2024:1485
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox 115.9.1-1.el8_2
    fixed: vendor fix RHSA-2024:1490
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox 115.9.1-1.el8_4
    fixed: vendor fix RHSA-2024:1491
  • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox 115.9.1-1.el8_2
    fixed: vendor fix RHSA-2024:1490
  • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox 115.9.1-1.el8_4
    fixed: vendor fix RHSA-2024:1491
show 7 more
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox 115.9.1-1.el8_6
    fixed: vendor fix RHSA-2024:1489
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox 115.9.1-1.el8_8
    fixed: vendor fix RHSA-2024:1488
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox 115.9.1-1.el9_0
    fixed: vendor fix RHSA-2024:1487
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox 115.9.1-1.el9_2, firefox-x11 115.9.1-1.el9_2
    fixed: vendor fix RHSA-2024:1483
  • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox 115.9.1-1.el8_2
    fixed: vendor fix RHSA-2024:1490
  • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox 115.9.1-1.el8_4
    fixed: vendor fix RHSA-2024:1491
  • Red Hat Enterprise Linux Client (v. 7) firefox 115.9.1-1.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) firefox 115.9.1-1.el7_9 Red Hat Enterprise Linux Server (v. 7) firefox 115.9.1-1.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) firefox 115.9.1-1.el7_9 Red Hat Enterprise Linux Workstation (v. 7) firefox 115.9.1-1.el7_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 115.9.1-1.el7_9
    fixed: vendor fix RHSA-2024:1486

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

4.70% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Mozilla Firefox
  • Mozilla Firefox ESR
  • mozilla firefox_esr

Classification

Weakness
  • CWE-830 Inclusion of Web Functionality from an Untrusted Source

References

Sources

Fencer Vulns 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.