Mozilla Thunderbird up to 91.3.x Composition Area code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Mozilla Thunderbird up to 91.3.x. This vulnerability affects unknown code of the component Composition Area Handler. Performing a manipulation results in code injection. This vulnerability is cataloged as CVE-2021-43528. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Thunderbird up to 91.3.x (Mail Client Software). This affects an unknown functionality of the component Composition Area Handler. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 12/09/2021. It is possible to read the advisory at mozilla.org. This vulnerability is uniquely identified as CVE-2021-43528 since 11/08/2021. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/14/2024). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 208604 (CentOS 7 : thunderbird (RHSA-2021:5046)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 91.4.0 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

The vulnerability is also documented in the vulnerability database at Tenable (208604). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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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: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
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: 208604
Nessus Name: CentOS 7 : thunderbird (RHSA-2021:5046)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 91.4.0

Timelineinfo

11/08/2021 🔍
12/09/2021 +31 days 🔍
12/09/2021 +0 days 🔍
05/02/2025 +1240 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2021-43528 (🔍)
GCVE (CVE): GCVE-0-2021-43528
GCVE (VulDB): GCVE-100-187839

Entryinfo

Created: 12/09/2021 08:22
Updated: 05/02/2025 20:32
Changes: 12/09/2021 08:22 (41), 12/11/2021 20:47 (1), 10/14/2024 07:27 (16), 05/02/2025 20:32 (3)
Complete: 🔍
Cache ID: 216::103

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

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