TI-2019-08753 Aliases CVE-2019-11692 GHSA-8h33-8ffg-2jc8

Use after free in Mozilla Thunderbird

MEDIUM 45CWE-416Published 2019-07-23 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

A use-after-free vulnerability can occur when listeners are removed from the event listener manager while still in use, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

Why it matters now

EPSS 0.01603 75th percentileScored 2026-11-07

Fix Fixed Thunderbird (Mozilla): 60.7Firefox (Mozilla): 67+1 more productRed Hat: 6 advisories

SSVC decision points

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Mozilla	Thunderbird	before 60.7	60.7	Patch available	CNA
Mozilla	Firefox	before 67	67	Patch available	CNA
Mozilla	Firefox ESR	before 60.7	60.7	Patch available	CNA

Thunderbird VendorMozilla Affected before 60.7 Fixed in 60.7 Patch available CNA
Firefox VendorMozilla Affected before 67 Fixed in 67 Patch available CNA
Firefox ESR VendorMozilla Affected before 60.7 Fixed in 60.7 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:firefox::::::::	before 60.7.0; before 67.0	Vulnerable	Mozilla
cpe:2.3:a:mozilla:thunderbird::::::::	before 60.7.0	Vulnerable	Mozilla

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 60.7.0; before 67.0 Vulnerable ·Mozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 60.7.0 Vulnerable ·Mozilla

Remediation

Fix · CNA Thunderbird (Mozilla) Fixed in 60.7
Fix · CNA Firefox (Mozilla) Fixed in 67
Fix · CNA Firefox ESR (Mozilla) Fixed in 60.7

Red Hat 6 advisories

RHSA-2019:1310 Released 2019-06-03 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-60.7.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-60.7.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-60.7.0-1.el6_10
RHSA-2019:1309 Released 2019-06-03 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-60.7.0-1.el7_6
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-60.7.0-1.el7_6
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-60.7.0-1.el7_6
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-60.7.0-1.el7_6
RHSA-2019:1308 Released 2019-06-03 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-60.7.0-1.el8_0

Show 3 more Red Hat advisories

RHSA-2019:1269 Released 2019-05-23 · Red Hat rating Critical
firefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-60.7.0-1.el8_0
RHSA-2019:1267 Released 2019-05-23 · Red Hat rating Critical
firefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-60.7.0-1.el6_10
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-60.7.0-1.el6_10
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-60.7.0-1.el6_10
- Red Hat Enterprise Linux Server (v. 6) firefox-60.7.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-60.7.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) firefox-60.7.0-1.el6_10
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-60.7.0-1.el6_10
RHSA-2019:1265 Released 2019-05-23 · Red Hat rating Critical
firefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-60.7.0-1.el7_6
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-60.7.0-1.el7_6
- Red Hat Enterprise Linux Server (v. 7) firefox-60.7.0-1.el7_6
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-60.7.0-1.el7_6
- Red Hat Enterprise Linux Workstation (v. 7) firefox-60.7.0-1.el7_6
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-60.7.0-1.el7_6
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-60.7.0-1.el7_6

Fixed in the same release

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

Release · 2019-07-23
Mozilla Firefox 67
20 records Highest priority Priority MEDIUM 7 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2019-08754 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 47
- TI-2019-07186 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 46
- TI-2019-08752 Use after free in Mozilla ThunderbirdPriority MEDIUM 45
Show all 20 records →
Release · 2019-07-23
Mozilla Firefox ESR, Thunderbird 60.7
12 records Highest priority Priority MEDIUM 6 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2019-08754 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 47
- TI-2019-07186 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 46
- TI-2019-08752 Use after free in Mozilla ThunderbirdPriority MEDIUM 45
Show all 12 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux AppStream (v. 8)	Fixed	RHSA-2019:1269, RHSA-2019:1308
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2019:1265, RHSA-2019:1309
Red Hat Enterprise Linux Client Optional (v. 7)	Fixed	RHSA-2019:1265
Red Hat Enterprise Linux Desktop (v. 6)	Fixed	RHSA-2019:1267, RHSA-2019:1310
Red Hat Enterprise Linux Desktop Optional (v. 6)	Fixed	RHSA-2019:1267
Red Hat Enterprise Linux HPC Node Optional (v. 6)	Fixed	RHSA-2019:1267
Red Hat Enterprise Linux Server (v. 6)	Fixed	RHSA-2019:1267
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2019:1265
Red Hat Enterprise Linux Server Optional (v. 6)	Fixed	RHSA-2019:1267, RHSA-2019:1310
Red Hat Enterprise Linux Server Optional (v. 7)	Fixed	RHSA-2019:1265, RHSA-2019:1309
Red Hat Enterprise Linux Workstation (v. 6)	Fixed	RHSA-2019:1267, RHSA-2019:1310
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2019:1265, RHSA-2019:1309
Red Hat Enterprise Linux Workstation Optional (v. 6)	Fixed	RHSA-2019:1267
Red Hat Enterprise Linux Workstation Optional (v. 7)	Fixed	RHSA-2019:1265
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)	Fixed	RHSA-2019:1265
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)	Fixed	RHSA-2019:1309

Timeline

2026-10-02 Threatist record created from CVE-2019-11692
2026-10-03 Alias added: GHSA-8h33-8ffg-2jc8

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