VDB-209839 · CVE-2022-22742 · Bug 1739923

Mozilla Thunderbird up to 91.4 Edit Mode out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Mozilla Thunderbird up to 91.4. It has been rated as problematic. This vulnerability affects unknown code of the component Edit Mode. This manipulation causes out-of-bounds. The identification of this vulnerability is CVE-2022-22742. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Mozilla Thunderbird up to 91.4 (Mail Client Software) and classified as problematic. Affected by this vulnerability is an unknown function of the component Edit Mode. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. The summary by CVE is:

When inserting text while in edit mode, some characters might have lead to out-of-bounds memory access causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

The weakness was shared 01/11/2022 by Irvan Kurniawan as Bug 1739923 as confirmed advisory (Website). It is possible to read the advisory at bugzilla.mozilla.org. The advisory contains:

When inserting text while in edit mode, some characters might have lead to out-of-bounds memory access causing a potentially exploitable crash.

This vulnerability is known as CVE-2022-22742. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 91.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Mail Client Software

Vendor

Mozilla

Name

Thunderbird

Version

License

open-source

Website

Vendor: https://www.mozilla.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Thunderbird 91.5

Timelineinfo

01/07/2022 🔍
01/11/2022 +4 days 🔍
01/11/2022 +0 days 🔍
09/29/2022 +261 days 🔍
04/17/2025 +931 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1739923
Researcher: Irvan Kurniawan
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-22742 (🔍)
GCVE (CVE): GCVE-0-2022-22742
GCVE (VulDB): GCVE-100-209839

Entryinfo

Created: 09/29/2022 15:36
Updated: 04/17/2025 04:53
Changes: 09/29/2022 15:36 (18), 09/29/2022 15:40 (28), 10/25/2022 16:34 (1), 04/17/2025 04:53 (27)
Complete: 🔍
Cache ID: 216::103