TI-2022-00992 Aliases CVE-2022-1097 GHSA-5hr7-vh78-qh58

Use after free in Mozilla Thunderbird

MEDIUM 62CWE-416Published 2022-12-22 · Updated 2025-04-16

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: 10 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

<code>NSSToken</code> objects were referenced via direct points, and could have been accessed in an unsafe way on different threads, leading to a use-after-free and potentially exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00952 61st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Thunderbird (Mozilla): 91.8Firefox (Mozilla): 99+1 more productRed Hat: 10 advisoriesRed Hat: 10 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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

Vendor	Product	Affected versions	Fixed in	Status	Source
Mozilla	Thunderbird	before 91.8	91.8	Patch available	CNA
Mozilla	Firefox	before 99	99	Patch available	CNA
Mozilla	Firefox ESR	before 91.8	91.8	Patch available	CNA

Thunderbird VendorMozilla Affected before 91.8 Fixed in 91.8 Patch available CNA
Firefox VendorMozilla Affected before 99 Fixed in 99 Patch available CNA
Firefox ESR VendorMozilla Affected before 91.8 Fixed in 91.8 Patch available CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:firefox::::::::	before 99.0	Vulnerable	Mozilla
cpe:2.3:a:mozilla:firefox_esr::::::::	before 91.8	Vulnerable	Mozilla
cpe:2.3:a:mozilla:thunderbird::::::::	before 91.8	Vulnerable	Mozilla

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 99.0 Vulnerable ·Mozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 91.8 Vulnerable ·Mozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 91.8 Vulnerable ·Mozilla

Remediation

Fix · CNA Thunderbird (Mozilla) Fixed in 91.8
Fix · CNA Firefox (Mozilla) Fixed in 99
Fix · CNA Firefox ESR (Mozilla) Fixed in 91.8

Red Hat 10 advisories

RHSA-2022:1326 Released 2022-04-12 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird-91.8.0-1.el8_2
RHSA-2022:1302 Released 2022-04-11 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-91.8.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-91.8.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-91.8.0-1.el7_9
RHSA-2022:1305 Released 2022-04-11 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-91.8.0-1.el8_4

Show 7 more Red Hat advisories

RHSA-2022:1301 Released 2022-04-11 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-91.8.0-1.el8_5
RHSA-2022:1303 Released 2022-04-11 · Red Hat rating Important
thunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-91.8.0-1.el8_1
RHSA-2022:1284 Released 2022-04-08 · Red Hat rating Important
firefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-91.8.0-1.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-91.8.0-1.el7_9
- Red Hat Enterprise Linux Server (v. 7) firefox-91.8.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-91.8.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-91.8.0-1.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-91.8.0-1.el7_9
RHSA-2022:1285 Released 2022-04-08 · Red Hat rating Important
firefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-91.8.0-1.el8_4
RHSA-2022:1287 Released 2022-04-08 · Red Hat rating Important
firefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-91.8.0-1.el8_5
RHSA-2022:1286 Released 2022-04-08 · Red Hat rating Important
firefox security update
- Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox-91.8.0-1.el8_2
RHSA-2022:1283 Released 2022-04-08 · Red Hat rating Important
firefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-91.8.0-1.el8_1

Fixed in the same release

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

Release · 2022-12-22
Mozilla Firefox 99
10 records Highest priority Priority HIGH 1 HIGH, 7 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2022-11068 Improper output encoding in Mozilla FirefoxPriority HIGH 73
- TI-2022-11071 In unusual circumstances, selecting text could cause text selection caching to behave…Priority MEDIUM 62
- TI-2022-11069 Out-of-bounds read in Mozilla ThunderbirdPriority MEDIUM 62
Show all 10 records →
Release · 2022-12-22
Mozilla Thunderbird 91.8
8 records Highest priority Priority MEDIUM 5 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2022-11069 Out-of-bounds read in Mozilla ThunderbirdPriority MEDIUM 62
- TI-2022-11070 Clickjacking in Mozilla ThunderbirdPriority MEDIUM 58
- TI-2022-11065 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 45
Show all 8 records →

Show 1 more group

Release · 2022-12-22
Mozilla Firefox ESR 91.8
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2022-11069 Out-of-bounds read in Mozilla ThunderbirdPriority MEDIUM 62
- TI-2022-11070 Clickjacking in Mozilla ThunderbirdPriority MEDIUM 58
- TI-2022-11065 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 45
Show all 7 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 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)	Fixed	RHSA-2022:1287, RHSA-2022:1301
Red Hat Enterprise Linux AppStream E4S (v. 8.1)	Fixed	RHSA-2022:1283, RHSA-2022:1303
Red Hat Enterprise Linux AppStream EUS (v. 8.2)	Fixed	RHSA-2022:1286, RHSA-2022:1326
Red Hat Enterprise Linux AppStream EUS (v.8.4)	Fixed	RHSA-2022:1285, RHSA-2022:1305
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2022:1284, RHSA-2022:1302
Red Hat Enterprise Linux Client Optional (v. 7)	Fixed	RHSA-2022:1284
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2022:1284
Red Hat Enterprise Linux Server Optional (v. 7)	Fixed	RHSA-2022:1284, RHSA-2022:1302
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2022:1284, RHSA-2022:1302
Red Hat Enterprise Linux Workstation Optional (v. 7)	Fixed	RHSA-2022:1284

Not affected: 1 product

Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2022-1097
2026-10-03 Alias added: GHSA-5hr7-vh78-qh58

References

Exploit 1

https://bugzilla.mozilla.org/show_bug.cgi?id=1745667

Advisory 3

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