Mozilla Thunderbird up to 91.10/101 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Mozilla Thunderbird up to 91.10/101. The impacted element is an unknown function. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2022-34484. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Thunderbird up to 91.10/101 (Mail Client Software). This affects an unknown code. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

The weakness was disclosed 06/28/2022 with Mozilla as Memory safety bugs fixed in Thunderbird 91.11 and Thunderbird 102 as confirmed advisory (Website). The advisory is shared at bugzilla.mozilla.org. The advisory contains:

The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
This vulnerability is uniquely identified as CVE-2022-34484. 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 08/10/2025).

The vulnerability scanner Nessus provides a plugin with the ID 246881 (Linux Distros Unpatched Vulnerability : CVE-2022-34484), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 91.11 or 102 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 Tenable (246881). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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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

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

Exploitinginfo

Class: Memory corruption
CWE: 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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Nessus ID: 246881
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-34484

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Thunderbird 91.11/102

Timelineinfo

06/24/2022 🔍
06/28/2022 +4 days 🔍
06/28/2022 +0 days 🔍
09/30/2022 +94 days 🔍
08/10/2025 +1045 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Memory safety bugs fixed in Thunderbird 91.11 and Thunderbird 102
Organization: Mozilla
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-34484 (🔍)
GCVE (CVE): GCVE-0-2022-34484
GCVE (VulDB): GCVE-100-209997

Entryinfo

Created: 09/30/2022 10:58
Updated: 08/10/2025 18:12
Changes: 09/30/2022 10:58 (13), 09/30/2022 10:59 (5), 09/30/2022 11:02 (27), 10/29/2022 06:52 (1), 04/16/2025 05:58 (27), 08/10/2025 18:12 (2)
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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