Mozilla Thunderbird up to 91.5 Worker access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Mozilla Thunderbird up to 91.5. Affected by this vulnerability is an unknown functionality of the component Worker. This manipulation causes access control. The identification of this vulnerability is CVE-2022-22763. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 91.5 (Mail Client Software). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Worker. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 02/08/2022 by Mozilla Fuzzing Team as Bug 1740534 as confirmed advisory (Website). The advisory is shared at bugzilla.mozilla.org. The advisory contains:

When a worker is shutdown, it was possible to cause script to run late in the lifecycle, at a point after where it should not be possible.
This vulnerability is known as CVE-2022-22763. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/29/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 91.6 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-27906). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Thunderbird 91.6

Timelineinfo

01/07/2022 🔍
02/08/2022 +32 days 🔍
02/08/2022 +0 days 🔍
09/29/2022 +233 days 🔍
04/29/2026 +1308 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1740534
Researcher: Mozilla Fuzzing Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-22763 (🔍)
GCVE (CVE): GCVE-0-2022-22763
GCVE (VulDB): GCVE-100-209869
EUVD: 🔍

Entryinfo

Created: 09/29/2022 17:07
Updated: 04/29/2026 09:43
Changes: 09/29/2022 17:07 (15), 09/29/2022 17:08 (2), 09/29/2022 17:11 (29), 10/26/2022 08:16 (1), 04/29/2026 09:43 (15)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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