Mozilla Thunderbird up to 91.6.0 Email out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$5k-$25k0.95

Summaryinfo

A vulnerability has been found in Mozilla Thunderbird up to 91.6.0 and classified as critical. This affects an unknown function of the component Email Handler. Performing a manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2022-0566. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 91.6.0 (Mail Client Software). It has been classified as critical. This affects an unknown part of the component Email Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

It may be possible for an attacker to craft an email message that causes Thunderbird to perform an out-of-bounds write of one byte when processing the message. This vulnerability affects Thunderbird < 91.6.1.

The weakness was disclosed 02/15/2022 with Mozilla as Bug 1753094 as confirmed advisory (Website). The advisory is shared at bugzilla.mozilla.org. The advisory contains:

It may be possible for an attacker to craft an email message that causes Thunderbird to perform an out-of-bounds write of one byte when processing the message.
This vulnerability is uniquely identified as CVE-2022-0566. 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 $5k-$25k at the moment (estimation calculated on 04/16/2025).

Upgrading to version 91.6.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
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 91.6.1

Timelineinfo

02/11/2022 🔍
02/15/2022 +4 days 🔍
02/15/2022 +0 days 🔍
09/29/2022 +226 days 🔍
04/16/2025 +930 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1753094
Organization: Mozilla
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-0566 (🔍)
GCVE (CVE): GCVE-0-2022-0566
GCVE (VulDB): GCVE-100-209877

Entryinfo

Created: 09/29/2022 17:34
Updated: 04/16/2025 18:35
Changes: 09/29/2022 17:34 (18), 09/29/2022 17:37 (28), 10/26/2022 08:34 (1), 04/16/2025 18:35 (27)
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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