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TI-2022-22387 Aliases CVE-2022-45421GHSA-gf6p-963f-gv5h

Out-of-bounds write in Mozilla Firefox ESR

Priority MEDIUM 41CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 15 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Mozilla developers Andrew McCreight and Gabriele Svelto reported memory safety bugs present in Thunderbird 102.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00749 55th percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 102.5Thunderbird (Mozilla): 102.5+1 more productRed Hat: 16 advisoriesRed Hat: 15 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 102.5102.5Patch availableCNA
MozillaThunderbirdbefore 102.5102.5Patch availableCNA
MozillaFirefoxbefore 107107Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 102.5 Fixed in 102.5 Patch available CNA
  • Thunderbird VendorMozilla Affected before 102.5 Fixed in 102.5 Patch available CNA
  • Firefox VendorMozilla Affected before 107 Fixed in 107 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 107.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.5VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.5VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 107.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.5 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.5 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.5
  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.5
  • Fix · CNA Firefox (Mozilla) Fixed in 107

Red Hat 16 advisories

  • RHSA-2022:8979 Released 2022-12-13 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.5.0-1.el9_0
  • RHSA-2022:8980 Released 2022-12-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.5.0-2.el9_0
  • RHSA-2022:8580 Released 2022-11-22 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.5.0-1.el9_1
Show 13 more Red Hat advisories
  • RHSA-2022:8561 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.5.0-2.el9_1
  • RHSA-2022:8555 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.5.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.5.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.5.0-2.el7_9
  • RHSA-2022:8552 Released 2022-11-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.5.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.5.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.5.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.5.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.5.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.5.0-1.el7_9
  • RHSA-2022:8556 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.5.0-2.el8_1
  • RHSA-2022:8554 Released 2022-11-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.5.0-1.el8_7
  • RHSA-2022:8553 Released 2022-11-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.5.0-1.el8_1
  • RHSA-2022:8549 Released 2022-11-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.5.0-1.el8_4
  • RHSA-2022:8550 Released 2022-11-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.5.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.5.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.5.0-1.el8_2
  • RHSA-2022:8548 Released 2022-11-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.5.0-1.el8_6
  • RHSA-2022:8547 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.5.0-2.el8_7
  • RHSA-2022:8545 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.5.0-2.el8_6
  • RHSA-2022:8544 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.5.0-2.el8_4
  • RHSA-2022:8543 Released 2022-11-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.5.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.5.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.5.0-2.el8_2

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 107

    19 records Highest priority Priority HIGH 1 HIGH, 12 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2022-22381 Unrestricted file upload in Mozilla FirefoxPriority HIGH 69
    • TI-2022-22371 Use after free in Mozilla Firefox ESRPriority MEDIUM 62
    • TI-2022-22370 Through a series of popup and <code>window.print()</code> calls, an attacker can cause a…Priority MEDIUM 62
    Show all 19 records →
  • Release ·

    Mozilla Firefox ESR, Thunderbird 102.5

    13 records Highest priority Priority MEDIUM 8 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2022-22371 Use after free in Mozilla Firefox ESRPriority MEDIUM 62
    • TI-2022-22370 Through a series of popup and <code>window.print()</code> calls, an attacker can cause a…Priority MEDIUM 62
    • TI-2022-22384 Clickjacking in Mozilla Firefox ESRPriority MEDIUM 60
    Show all 13 records →

Vendor assessments

Red Hat

Red Hat rating: Important. 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 AppStream (v. 8)Fixed RHSA-2022:8547, RHSA-2022:8554
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:8561, RHSA-2022:8580
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2022:8543, RHSA-2022:8550
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:8553, RHSA-2022:8556
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2022:8543, RHSA-2022:8550
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:8544, RHSA-2022:8549
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2022:8545, RHSA-2022:8548
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2022:8979, RHSA-2022:8980
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2022:8543, RHSA-2022:8550
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:8552, RHSA-2022:8555
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:8552
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:8552
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:8552, RHSA-2022:8555
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:8552, RHSA-2022:8555
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:8552

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-45421
  2. 2026-10-03 Alias added: GHSA-gf6p-963f-gv5h

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