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TI-2023-11018 Aliases CVE-2023-25746GHSA-63m6-9qhj-8rqf

Out-of-bounds write in Mozilla Thunderbird

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 ESR 102.7. 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 Thunderbird < 102.8 and Firefox ESR < 102.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00668 52nd percentileScored 2026-11-07
Fix Partial Thunderbird (Mozilla): 102.8Firefox ESR (Mozilla): 102.8Red 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
MozillaThunderbirdbefore 102.8102.8Patch availableCNA
MozillaFirefox ESRbefore 102.8102.8Patch availableCNA
  • Thunderbird VendorMozilla Affected before 102.8 Fixed in 102.8 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 102.8 Fixed in 102.8 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.8VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.8VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.8 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.8 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.8
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.8

Red Hat 16 advisories

  • RHSA-2023:0820 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.8.0-2.el8_4
  • RHSA-2023:0822 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.8.0-2.el8_6
  • RHSA-2023:0821 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.8.0-2.el8_7
Show 13 more Red Hat advisories
  • RHSA-2023:0817 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.8.0-2.el7_9
  • RHSA-2023:0823 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.8.0-2.el9_0
  • RHSA-2023:0824 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.8.0-2.el9_1
  • RHSA-2023:0819 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.8.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.8.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.8.0-2.el8_2
  • RHSA-2023:0818 Released 2023-02-20 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.8.0-2.el8_1
  • RHSA-2023:0812 Released 2023-02-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.8.0-2.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.8.0-2.el7_9
  • RHSA-2023:0808 Released 2023-02-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.8.0-2.el8_7
  • RHSA-2023:0807 Released 2023-02-20 · Red Hat rating Important
    Mozilla Firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.8.0-2.el8_6
  • RHSA-2023:0811 Released 2023-02-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.8.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.8.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.8.0-2.el8_2
  • RHSA-2023:0810 Released 2023-02-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.8.0-2.el9_1, firefox-x11-102.8.0-2.el9_1
  • RHSA-2023:0809 Released 2023-02-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.8.0-2.el9_0
  • RHSA-2023:0805 Released 2023-02-20 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.8.0-2.el8_4
  • RHSA-2023:0806 Released 2023-02-20 · Red Hat rating Important
    Mozilla Firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.8.0-2.el8_1

Fixed in the same release

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

  • Release ·

    Mozilla Firefox ESR 102.8

    14 records Highest priority Priority HIGH 7 HIGH, 6 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2023-11011 Use after free in Mozilla FirefoxPriority HIGH 73
    • TI-2023-11009 Incorrect type conversion in Mozilla FirefoxPriority HIGH 73
    • TI-2023-11007 Use after free in Mozilla FirefoxPriority HIGH 73
    Show all 14 records →
  • Release ·

    Mozilla Thunderbird 102.8

    13 records Highest priority Priority HIGH 6 HIGH, 5 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2023-11011 Use after free in Mozilla FirefoxPriority HIGH 73
    • TI-2023-11009 Incorrect type conversion in Mozilla FirefoxPriority HIGH 73
    • TI-2023-11007 Use after free in Mozilla FirefoxPriority HIGH 73
    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-2023:0808, RHSA-2023:0821
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:0810, RHSA-2023:0824
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2023:0811, RHSA-2023:0819
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2023:0806, RHSA-2023:0818
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2023:0811, RHSA-2023:0819
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2023:0805, RHSA-2023:0820
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:0807, RHSA-2023:0822
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:0809, RHSA-2023:0823
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2023:0811, RHSA-2023:0819
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:0812, RHSA-2023:0817
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:0812
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:0812
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:0812, RHSA-2023:0817
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:0812, RHSA-2023:0817
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:0812

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-25746
  2. 2026-10-03 Alias added: GHSA-63m6-9qhj-8rqf

References

Advisory 3

  • TI-2022-15364 Use after free in Mozilla Firefox CVSS 3.1CRITICAL 9.8
  • TI-2022-13633 Out-of-bounds write in Mozilla Thunderbird CVSS 3.1CRITICAL 9.8
  • TI-2021-03015 XML injection in Mozilla Firefox ESR CVSS 3.1CRITICAL 10.0
  • TI-2022-09755 Protection mechanism failure in Mozilla Firefox CVSS 3.1CRITICAL 9.6
  • TI-2022-07009 Protection mechanism failure in Mozilla Firefox CVSS 3.1CRITICAL 9.6
  • TI-2023-18834 Use after free in Mozilla Firefox CVSS 3.1HIGH 8.8
See all 486 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences