TI-2019-07179 Aliases CVE-2019-9793 GHSA-w86v-mv97-qh72

Memory corruption in Mozilla Thunderbird

LOW 30CWE-119Published 2019-04-26 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. *Note: Spectre mitigations are currently enabled for all users by default settings.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Why it matters now

EPSS 0.0163 76th percentileScored 2026-11-07

Fix Fixed Thunderbird (Mozilla): 60.6Firefox ESR (Mozilla): 60.6+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 60.6	60.6	Patch available	CNA
Mozilla	Firefox ESR	before 60.6	60.6	Patch available	CNA
Mozilla	Firefox	before 66	66	Patch available	CNA

Thunderbird VendorMozilla Affected before 60.6 Fixed in 60.6 Patch available CNA
Firefox ESR VendorMozilla Affected before 60.6 Fixed in 60.6 Patch available CNA
Firefox VendorMozilla Affected before 66 Fixed in 66 Patch available CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:firefox::::::::	before 66.0	Vulnerable	Mozilla
cpe:2.3:a:mozilla:firefox_esr::::::::	before 60.6	Vulnerable	Mozilla
cpe:2.3:a:mozilla:thunderbird::::::::	before 60.6	Vulnerable	Mozilla

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 66.0 Vulnerable ·Mozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 60.6 Vulnerable ·Mozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 60.6 Vulnerable ·Mozilla

Remediation

Fix · CNA Thunderbird (Mozilla) Fixed in 60.6
Fix · CNA Firefox ESR (Mozilla) Fixed in 60.6
Fix · CNA Firefox (Mozilla) Fixed in 66

Red Hat 6 advisories

RHSA-2019:1144 Released 2019-05-13 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-60.6.1-1.el8
RHSA-2019:0966 Released 2019-05-07 · Red Hat rating Critical
firefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-60.6.1-1.el8
RHSA-2019:0681 Released 2019-03-28 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-60.6.1-1.el7_6
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-60.6.1-1.el7_6
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-60.6.1-1.el7_6
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-60.6.1-1.el7_6

Show 3 more Red Hat advisories

RHSA-2019:0680 Released 2019-03-28 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-60.6.1-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-60.6.1-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-60.6.1-1.el6_10
RHSA-2019:0623 Released 2019-03-20 · Red Hat rating Critical
firefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-60.6.0-3.el6_10
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-60.6.0-3.el6_10
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-60.6.0-3.el6_10
- Red Hat Enterprise Linux Server (v. 6) firefox-60.6.0-3.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-60.6.0-3.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) firefox-60.6.0-3.el6_10
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-60.6.0-3.el6_10
RHSA-2019:0622 Released 2019-03-20 · Red Hat rating Critical
firefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-60.6.0-3.el7_6
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-60.6.0-3.el7_6
- Red Hat Enterprise Linux Server (v. 7) firefox-60.6.0-3.el7_6
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-60.6.0-3.el7_6
- Red Hat Enterprise Linux Workstation (v. 7) firefox-60.6.0-3.el7_6
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-60.6.0-3.el7_6
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-60.6.0-3.el7_6

Fixed in the same release

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

Release · 2019-04-26
Mozilla Firefox 66
21 records Highest priority Priority MEDIUM 10 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2019-07177 Type confusion in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2019-07178 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 57
- TI-2019-07190 OS command injection in Mozilla FirefoxPriority MEDIUM 46
Show all 21 records →
Release · 2019-04-26
Mozilla Firefox ESR, Thunderbird 60.6
9 records Highest priority Priority MEDIUM 7 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2019-07177 Type confusion in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2019-07178 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 57
- TI-2019-07182 Use after free in Mozilla ThunderbirdPriority MEDIUM 46
Show all 9 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-2019:0966, RHSA-2019:1144
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2019:0622, RHSA-2019:0681
Red Hat Enterprise Linux Client Optional (v. 7)	Fixed	RHSA-2019:0622
Red Hat Enterprise Linux Desktop (v. 6)	Fixed	RHSA-2019:0623, RHSA-2019:0680
Red Hat Enterprise Linux Desktop Optional (v. 6)	Fixed	RHSA-2019:0623
Red Hat Enterprise Linux HPC Node Optional (v. 6)	Fixed	RHSA-2019:0623
Red Hat Enterprise Linux Server (v. 6)	Fixed	RHSA-2019:0623
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2019:0622
Red Hat Enterprise Linux Server Optional (v. 6)	Fixed	RHSA-2019:0623, RHSA-2019:0680
Red Hat Enterprise Linux Server Optional (v. 7)	Fixed	RHSA-2019:0622, RHSA-2019:0681
Red Hat Enterprise Linux Workstation (v. 6)	Fixed	RHSA-2019:0623, RHSA-2019:0680
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2019:0622, RHSA-2019:0681
Red Hat Enterprise Linux Workstation Optional (v. 6)	Fixed	RHSA-2019:0623
Red Hat Enterprise Linux Workstation Optional (v. 7)	Fixed	RHSA-2019:0622
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)	Fixed	RHSA-2019:0622
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)	Fixed	RHSA-2019:0681

Timeline

2026-10-02 Threatist record created from CVE-2019-9793
2026-10-03 Alias added: GHSA-w86v-mv97-qh72

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