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TI-2022-02315 Aliases CVE-2022-2505GHSA-mg2x-8rwm-j9cx

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: 11 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 and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 102. 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 < 102.1, Firefox < 103, and Thunderbird < 102.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00798 56th percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 102.1Firefox (Mozilla): 103+1 more productRed Hat: 12 advisoriesRed Hat: 11 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 102.1102.1Patch availableCNA
MozillaFirefoxbefore 103103Patch availableCNA
MozillaThunderbirdbefore 102.1102.1Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 102.1 Fixed in 102.1 Patch available CNA
  • Firefox VendorMozilla Affected before 103 Fixed in 103 Patch available CNA
  • Thunderbird VendorMozilla Affected before 102.1 Fixed in 102.1 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 103.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.1VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.1VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 103.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.1 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.1
  • Fix · CNA Firefox (Mozilla) Fixed in 103
  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.1

Red Hat 12 advisories

  • RHSA-2022:5776 Released 2022-08-01 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-91.12.0-2.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-91.12.0-2.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-91.12.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-91.12.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-91.12.0-2.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-91.12.0-2.el7_9
  • RHSA-2022:5773 Released 2022-08-01 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-91.12.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-91.12.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-91.12.0-1.el7_9
  • RHSA-2022:5777 Released 2022-08-01 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-91.12.0-2.el8_6
Show 9 more Red Hat advisories
  • RHSA-2022:5774 Released 2022-08-01 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-91.12.0-1.el8_6
  • RHSA-2022:5778 Released 2022-08-01 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-91.12.0-1.el9_0
  • RHSA-2022:5772 Released 2022-08-01 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-91.12.0-1.el8_4
  • RHSA-2022:5769 Released 2022-08-01 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-91.12.0-2.el8_4
  • RHSA-2022:5771 Released 2022-08-01 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird-91.12.0-1.el8_2
  • RHSA-2022:5770 Released 2022-08-01 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-91.12.0-1.el8_1
  • RHSA-2022:5767 Released 2022-08-01 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-91.12.0-2.el9_0
  • RHSA-2022:5765 Released 2022-08-01 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox-91.12.0-2.el8_2
  • RHSA-2022:5766 Released 2022-08-01 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-91.12.0-2.el8_1

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 103

    8 records Highest priority Priority MEDIUM 4 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2022-16661 Uncontrolled search path in Mozilla Firefox ESRPriority MEDIUM 58
    • TI-2022-16667 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 50
    • TI-2022-16666 Clickjacking in Mozilla Firefox ESRPriority MEDIUM 40
    Show all 8 records →
  • Release ·

    Mozilla Firefox ESR, Thunderbird 102.1

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2022-16661 Uncontrolled search path in Mozilla Firefox ESRPriority MEDIUM 58
    Show all 2 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-2022:5774, RHSA-2022:5777
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:5767, RHSA-2022:5778
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:5766, RHSA-2022:5770
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2022:5765, RHSA-2022:5771
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:5769, RHSA-2022:5772
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:5773, RHSA-2022:5776
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:5776
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:5776
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:5773, RHSA-2022:5776
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:5773, RHSA-2022:5776
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:5776

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-2505
  2. 2026-10-03 Alias added: GHSA-mg2x-8rwm-j9cx

References

Advisory 4

  • 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