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TI-2022-23221 Aliases CVE-2022-46878GHSA-3r7c-wgmw-38g7

Out-of-bounds write in Mozilla Firefox

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 Randell Jesup, Valentin Gosu, Olli Pettay, and the Mozilla Fuzzing Team reported memory safety bugs present in Thunderbird 102.5. 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 < 108, Firefox ESR < 102.6, and Thunderbird < 102.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0077 55th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 108Firefox ESR (Mozilla): 102.6+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
MozillaFirefoxbefore 108108Patch availableCNA
MozillaFirefox ESRbefore 102.6102.6Patch availableCNA
MozillaThunderbirdbefore 102.6102.6Patch availableCNA
  • Firefox VendorMozilla Affected before 108 Fixed in 108 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 102.6 Fixed in 102.6 Patch available CNA
  • Thunderbird VendorMozilla Affected before 102.6 Fixed in 102.6 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 108.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.6VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.6VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 108.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.6 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.6 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 108
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.6
  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.6

Red Hat 16 advisories

  • RHSA-2022:9079 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.6.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.6.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.6.0-2.el7_9
  • RHSA-2022:9074 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.6.0-2.el8_7
  • RHSA-2022:9081 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.6.0-2.el9_0
Show 13 more Red Hat advisories
  • RHSA-2022:9078 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.6.0-2.el8_6
  • RHSA-2022:9080 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.6.0-2.el9_1
  • RHSA-2022:9072 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.6.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.6.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.6.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.6.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.6.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.6.0-1.el7_9
  • RHSA-2022:9076 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.6.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.6.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.6.0-2.el8_2
  • RHSA-2022:9075 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.6.0-2.el8_4
  • RHSA-2022:9077 Released 2022-12-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.6.0-2.el8_1
  • RHSA-2022:9069 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.6.0-1.el8_4
  • RHSA-2022:9070 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.6.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.6.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.6.0-1.el8_2
  • RHSA-2022:9071 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.6.0-1.el8_1
  • RHSA-2022:9068 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.6.0-1.el8_6
  • RHSA-2022:9067 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.6.0-1.el8_7
  • RHSA-2022:9066 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.6.0-1.el9_0
  • RHSA-2022:9065 Released 2022-12-15 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.6.0-1.el9_1

Fixed in the same release

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

  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — GLSA-202305-06

    11 records Highest priority Priority MEDIUM 7 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2022-23225 Use after free in Mozilla FirefoxPriority MEDIUM 51
    • TI-2022-23218 Code injection in Mozilla FirefoxPriority MEDIUM 42
    • TI-2022-23215 An out of date library (libusrsctp) contained vulnerabilities that could potentially be…Priority MEDIUM 42
    Show all 11 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — GLSA-202305-13

    9 records Highest priority Priority MEDIUM 5 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2022-23225 Use after free in Mozilla FirefoxPriority MEDIUM 51
    • TI-2022-23218 Code injection in Mozilla FirefoxPriority MEDIUM 42
    • TI-2022-23215 An out of date library (libusrsctp) contained vulnerabilities that could potentially be…Priority MEDIUM 42
    Show all 9 records → Advisory →

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-2022:9067, RHSA-2022:9074
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:9065, RHSA-2022:9080
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2022:9070, RHSA-2022:9076
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:9071, RHSA-2022:9077
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2022:9070, RHSA-2022:9076
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:9069, RHSA-2022:9075
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2022:9068, RHSA-2022:9078
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2022:9066, RHSA-2022:9081
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2022:9070, RHSA-2022:9076
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:9072, RHSA-2022:9079
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:9072
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:9072
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:9072, RHSA-2022:9079
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:9072, RHSA-2022:9079
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:9072

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-46878
  2. 2026-10-03 Alias added: GHSA-3r7c-wgmw-38g7

References

Advisory 5

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