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TI-2023-12745 Aliases CVE-2023-28176GHSA-jgm5-8hh7-2h6w

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

Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. 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 < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00719 54th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 111Firefox ESR (Mozilla): 102.9+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 111111Patch availableCNA
MozillaFirefox ESRbefore 102.9102.9Patch availableCNA
MozillaThunderbirdbefore 102.9102.9Patch availableCNA
  • Firefox VendorMozilla Affected before 111 Fixed in 111 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 102.9 Fixed in 102.9 Patch available CNA
  • Thunderbird VendorMozilla Affected before 102.9 Fixed in 102.9 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 111.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.9VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.9VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 111.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.9 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.9 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 111
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.9
  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.9

Red Hat 16 advisories

  • RHSA-2023:1479 Released 2023-03-27 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.9.0-4.el8_1
  • RHSA-2023:1472 Released 2023-03-27 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.9.0-2.el8_4
  • RHSA-2023:1444 Released 2023-03-23 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.9.0-4.el8_4
Show 13 more Red Hat advisories
  • RHSA-2023:1445 Released 2023-03-23 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.9.0-4.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.9.0-4.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.9.0-4.el8_2
  • RHSA-2023:1443 Released 2023-03-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.9.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.9.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.9.0-2.el8_2
  • RHSA-2023:1442 Released 2023-03-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.9.0-2.el8_1
  • RHSA-2023:1404 Released 2023-03-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.9.0-1.el8_6
  • RHSA-2023:1403 Released 2023-03-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.9.0-1.el8_7
  • RHSA-2023:1407 Released 2023-03-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.9.0-1.el9_1
  • RHSA-2023:1402 Released 2023-03-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.9.0-1.el9_0
  • RHSA-2023:1401 Released 2023-03-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.9.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.9.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.9.0-1.el7_9
  • RHSA-2023:1367 Released 2023-03-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.9.0-3.el8_6
  • RHSA-2023:1364 Released 2023-03-21 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.9.0-3.el9_0
  • RHSA-2023:1336 Released 2023-03-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.9.0-3.el8_7
  • RHSA-2023:1337 Released 2023-03-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.9.0-3.el9_1, firefox-x11-102.9.0-3.el9_1
  • RHSA-2023:1333 Released 2023-03-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.9.0-3.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.9.0-3.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.9.0-3.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.9.0-3.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.9.0-3.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.9.0-3.el7_9

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 111

    13 records Highest priority Priority HIGH 2 HIGH, 9 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2023-12731 Type confusion in Mozilla FirefoxPriority HIGH 73
    • TI-2023-12730 If temporary "one-time" permissions, such as the ability to use the Camera, were granted…Priority HIGH 73
    • TI-2023-12733 Origin validation error in Mozilla FirefoxPriority MEDIUM 62
    Show all 13 records →
  • Release ·

    Mozilla Firefox ESR, Thunderbird 102.9

    6 records Highest priority Priority HIGH 1 HIGH, 4 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2023-12731 Type confusion in Mozilla FirefoxPriority HIGH 73
    • TI-2023-12733 Origin validation error in Mozilla FirefoxPriority MEDIUM 62
    • TI-2023-12732 Path traversal in Mozilla FirefoxPriority MEDIUM 62
    Show all 6 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-2023:1336, RHSA-2023:1403
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:1337, RHSA-2023:1407
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2023:1443, RHSA-2023:1445
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2023:1442, RHSA-2023:1479
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2023:1443, RHSA-2023:1445
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2023:1444, RHSA-2023:1472
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:1367, RHSA-2023:1404
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:1364, RHSA-2023:1402
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2023:1443, RHSA-2023:1445
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:1333, RHSA-2023:1401
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:1333
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:1333
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:1333, RHSA-2023:1401
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:1333, RHSA-2023:1401
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:1333

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-28176
  2. 2026-10-03 Alias added: GHSA-jgm5-8hh7-2h6w

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