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TI-2024-07773 Aliases CVE-2024-8383GHSA-794f-5gfq-xmmq

Firefox normally asks for confirmation before asking the operating system to find an…

Priority MEDIUM 40CWE-1188Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 13 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

Firefox normally asks for confirmation before asking the operating system to find an application to handle a scheme that the browser does not support. It did not ask before doing so for the Usenet-related schemes news: and snews:. Since most operating systems don't have a trusted newsreader installed by default, an unscrupulous program that the user downloaded could register itself as a handler. The website that served the application download could then launch that application at will. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Firefox ESR < 115.15.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00637 50th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 130Firefox ESR (Mozilla): 128.2, 115.15Red Hat: 9 advisoriesRed Hat: 13 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 130130Patch availableCNA
MozillaFirefox ESRbefore 128.2128.2Patch availableCNA
MozillaFirefox ESRbefore 115.15115.15Patch availableCNA
  • Firefox VendorMozilla Affected before 130 Fixed in 130 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 128.2 Fixed in 128.2 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 115.15 Fixed in 115.15 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 130.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 115.15; 128.0 to before 128.2VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 130.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 115.15; 128.0 to before 128.2 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 130
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 128.2
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 115.15

Red Hat 9 advisories

  • RHSA-2024:6892 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox-128.2.0-1.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox-128.2.0-1.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox-128.2.0-1.el8_6
  • RHSA-2024:6891 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-128.2.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-128.2.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-128.2.0-1.el8_4
  • RHSA-2024:6850 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-128.2.0-1.el8_8
Show 6 more Red Hat advisories
  • RHSA-2024:6838 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux Server (v. 7 ELS) firefox-128.2.0-1.el7_9
  • RHSA-2024:6839 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-128.2.0-1.el8_2
  • RHSA-2024:6786 Released 2024-09-18 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-128.2.0-1.el9_2, firefox-x11-128.2.0-1.el9_2
  • RHSA-2024:6782 Released 2024-09-18 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox-128.2.0-1.el9_0
  • RHSA-2024:6681 Released 2024-09-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-128.2.0-1.el9_4, firefox-x11-128.2.0-1.el9_4
  • RHSA-2024:6682 Released 2024-09-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-128.2.0-1.el8_10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 130

    9 records Highest priority Priority MEDIUM 7 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2024-07771 Type confusion in Mozilla FirefoxPriority MEDIUM 56
    • TI-2024-07777 Memory corruption in Mozilla FirefoxPriority MEDIUM 50
    • TI-2024-07775 Type confusion in Mozilla FirefoxPriority MEDIUM 50
    Show all 9 records →
  • Release ·

    Mozilla Firefox ESR 128.2

    7 records Highest priority Priority MEDIUM 6 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2024-07771 Type confusion in Mozilla FirefoxPriority MEDIUM 56
    • TI-2024-07777 Memory corruption in Mozilla FirefoxPriority MEDIUM 50
    • TI-2024-07775 Type confusion in Mozilla FirefoxPriority MEDIUM 50
    Show all 7 records →
Show 1 more group
  • Release ·

    Mozilla Firefox ESR 115.15

    4 records Highest priority Priority MEDIUM 4 MEDIUM

    Other records, highest priority first

    • TI-2024-07771 Type confusion in Mozilla FirefoxPriority MEDIUM 56
    • TI-2024-07774 Use after free in Mozilla FirefoxPriority MEDIUM 50
    • TI-2024-07772 Internal browser event interfaces were exposed to web content when privileged…Priority MEDIUM 41
    Show all 4 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:6682
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:6681
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2024:6839
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2024:6891
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2024:6892
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2024:6891
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2024:6892
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:6782
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2024:6850
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:6786
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2024:6891
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2024:6892
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2024:6838

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-8383
  2. 2026-10-03 Alias added: GHSA-794f-5gfq-xmmq
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Advisory 3

Other 1

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences