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TI-2023-01828 Aliases CVE-2023-1945GHSA-f6gx-7fq3-c6p8

Out-of-bounds write in Mozilla Thunderbird

Priority LOW 30CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · 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

Unexpected data returned from the Safe Browsing API could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 102.10 and Firefox ESR < 102.10.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00644 51st percentileScored 2026-11-07
Fix Partial Thunderbird (Mozilla): 102.10Firefox ESR (Mozilla): 102.10Red 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
Partial

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 102.10102.10Patch availableCNA
MozillaFirefox ESRbefore 102.10102.10Patch availableCNA
  • Thunderbird VendorMozilla Affected before 102.10 Fixed in 102.10 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 102.10 Fixed in 102.10 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 102.10VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 102.10VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.10 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.10 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 102.10
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 102.10

Red Hat 16 advisories

  • RHSA-2023:1806 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.10.0-2.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.10.0-2.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.10.0-2.el7_9
  • RHSA-2023:1810 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.10.0-2.el9_0
  • RHSA-2023:1811 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.10.0-2.el8_6
Show 13 more Red Hat advisories
  • RHSA-2023:1809 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.10.0-2.el9_1
  • RHSA-2023:1804 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.10.0-2.el8_4
  • RHSA-2023:1805 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.10.0-2.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.10.0-2.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.10.0-2.el8_2
  • RHSA-2023:1802 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.10.0-2.el8_7
  • RHSA-2023:1803 Released 2023-04-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.10.0-2.el8_1
  • RHSA-2023:1791 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.10.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.10.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.10.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.10.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.10.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.10.0-1.el7_9
  • RHSA-2023:1790 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.10.0-1.el8_4
  • RHSA-2023:1788 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.10.0-1.el8_6
  • RHSA-2023:1792 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.10.0-1.el8_1
  • RHSA-2023:1787 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.10.0-1.el8_7
  • RHSA-2023:1789 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.10.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.10.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.10.0-1.el8_2
  • RHSA-2023:1786 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.10.0-1.el9_1, firefox-x11-102.10.0-1.el9_1
  • RHSA-2023:1785 Released 2023-04-14 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.10.0-1.el9_0

Fixed in the same release

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

  • Release ·

    Mozilla Thunderbird 102.10

    9 records Highest priority Priority MEDIUM 6 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization…Priority MEDIUM 62
    • TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they…Priority MEDIUM 62
    • TI-2023-13901 A website could have obscured the fullscreen notification by using a combination of…Priority MEDIUM 53
    Show all 9 records →
  • Release ·

    Mozilla Firefox ESR 102.10

    8 records Highest priority Priority MEDIUM 6 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization…Priority MEDIUM 62
    • TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they…Priority MEDIUM 62
    • TI-2023-13901 A website could have obscured the fullscreen notification by using a combination of…Priority MEDIUM 53
    Show all 8 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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-2023:1787, RHSA-2023:1802
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:1786, RHSA-2023:1809
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2023:1789, RHSA-2023:1805
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2023:1792, RHSA-2023:1803
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2023:1789, RHSA-2023:1805
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2023:1790, RHSA-2023:1804
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:1788, RHSA-2023:1811
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:1785, RHSA-2023:1810
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2023:1789, RHSA-2023:1805
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:1791, RHSA-2023:1806
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:1791
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:1791
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:1791, RHSA-2023:1806
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:1791, RHSA-2023:1806
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:1791

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-1945
  2. 2026-10-03 Alias added: GHSA-f6gx-7fq3-c6p8
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

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