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TI-2023-15514 Aliases CVE-2023-32215GHSA-2f35-mvmp-f953

Out-of-bounds write in Mozilla Firefox

Priority LOW 39CWE-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 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Mozilla developers and community members Gabriele Svelto, Andrew Osmond, Emily McDonough, Sebastian Hengst, Andrew McCreight and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 112 and Firefox ESR 102.10. 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 < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.

Why it matters now

EPSS 0.00753 55th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 113Firefox ESR (Mozilla): 102.11+1 more productRed Hat: 16 advisoriesRed Hat: 15 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 113113Patch availableCNA
MozillaFirefox ESRbefore 102.11102.11Patch availableCNA
MozillaThunderbirdbefore 102.11102.11Patch availableCNA
  • Firefox VendorMozilla Affected before 113 Fixed in 113 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 102.11 Fixed in 102.11 Patch available CNA
  • Thunderbird VendorMozilla Affected before 102.11 Fixed in 102.11 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 113.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.11VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.11VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 113.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.11 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.11 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 113
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.11
  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.11

Red Hat 16 advisories

  • RHSA-2023:3221 Released 2023-05-18 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.11.0-1.el8_7
  • RHSA-2023:3220 Released 2023-05-18 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.11.0-2.el8_7
  • RHSA-2023:3155 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.11.0-1.el8_6
Show 13 more Red Hat advisories
  • RHSA-2023:3151 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.11.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.11.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.11.0-1.el7_9
  • RHSA-2023:3154 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.11.0-1.el8_4
  • RHSA-2023:3153 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.11.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.11.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.11.0-1.el8_2
  • RHSA-2023:3150 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.11.0-1.el9_2
  • RHSA-2023:3152 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.11.0-1.el8_1
  • RHSA-2023:3149 Released 2023-05-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.11.0-1.el9_0
  • RHSA-2023:3143 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.11.0-2.el9_2, firefox-x11-102.11.0-2.el9_2
  • RHSA-2023:3141 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.11.0-2.el8_6
  • RHSA-2023:3140 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.11.0-2.el8_4
  • RHSA-2023:3142 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.11.0-2.el9_0
  • RHSA-2023:3137 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.11.0-2.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.11.0-2.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.11.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.11.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.11.0-2.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.11.0-2.el7_9
  • RHSA-2023:3139 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.11.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.11.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.11.0-2.el8_2
  • RHSA-2023:3138 Released 2023-05-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.11.0-2.el8_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-202312-03

    7 records Highest priority Priority MEDIUM 2 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2023-15511 An attacker could have positioned a `datalist` element to obscure the address bar.Priority MEDIUM 53
    • TI-2023-15506 Authentication bypass by spoofing in Mozilla FirefoxPriority MEDIUM 41
    • TI-2023-15512 Use of uninitialized resource in Mozilla FirefoxPriority LOW 39
    Show all 7 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — GLSA-202401-10

    7 records Highest priority Priority MEDIUM 2 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2023-15511 An attacker could have positioned a `datalist` element to obscure the address bar.Priority MEDIUM 53
    • TI-2023-15506 Authentication bypass by spoofing in Mozilla FirefoxPriority MEDIUM 41
    • TI-2023-15512 Use of uninitialized resource in Mozilla FirefoxPriority LOW 39
    Show all 7 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-2023:3220, RHSA-2023:3221
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:3143, RHSA-2023:3150
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2023:3139, RHSA-2023:3153
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2023:3138, RHSA-2023:3152
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2023:3139, RHSA-2023:3153
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2023:3140, RHSA-2023:3154
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:3141, RHSA-2023:3155
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:3142, RHSA-2023:3149
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2023:3139, RHSA-2023:3153
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:3137, RHSA-2023:3151
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:3137
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:3137
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:3137, RHSA-2023:3151
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:3137, RHSA-2023:3151
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:3137

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-32215
  2. 2026-10-03 Alias added: GHSA-2f35-mvmp-f953

References

Advisory 6

  • 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