Security Update for Thunderbird

thunderbird Updated 02 Oct 2025

Summary

31/01/2021
N/A
Yes i
Unrated
Not published

DSA-4842-1: thunderbird - security update. Affects thunderbird versions < 1:78.7.0-1~deb10u1. Fixed in 1:78.7.0-1~deb10u1. How to fix ↓

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Background

Thunderbird is an open-source email client developed by Mozilla. It provides a range of features for managing emails, contacts, and calendars. Thunderbird is widely used and is available for various operating systems. However, multiple security issues have been discovered in Thunderbird that could potentially lead to the execution of arbitrary code, denial of service, or information leaks.

Vulnerability Detail

The identified vulnerabilities in Thunderbird pose significant risks to users. They include:

  1. Arbitrary Code Execution: Attackers may exploit these vulnerabilities to execute malicious code on a user's system, potentially gaining unauthorized access or control.

  2. Denial of Service: Certain vulnerabilities could be leveraged to disrupt the normal functioning of Thunderbird, causing it to crash or become unresponsive.

  3. Information Leak: Some vulnerabilities may result in the unintended disclosure of sensitive information, potentially compromising user privacy and security.

How To Fix

Minimum fixed version

1:78.7.0-1~deb10u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade thunderbird

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Conclusion

Multiple security vulnerabilities have been identified in Thunderbird, an open-source email client. These vulnerabilities could lead to arbitrary code execution, denial of service, or information leaks. To mitigate these risks, it is crucial to update Thunderbird to version 1:78.7.0-1~deb10u1 or later. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

Thunderbird is an open-source email client developed by Mozilla. It offers features for managing emails, contacts, and calendars.

The identified vulnerabilities in Thunderbird could allow attackers to execute arbitrary code, cause denial of service, or leak sensitive information.

To fix these vulnerabilities, it is recommended to upgrade Thunderbird to version 1:78.7.0-1~deb10u1 or later.

No specific workarounds have been mentioned for these vulnerabilities. It is crucial to update Thunderbird to the latest version.

You can refer to Thunderbird's security tracker page at https://security-tracker.debian.org/tracker/thunderbird for detailed information on its security status.

Related vulnerabilities

Recent vulnerabilities recorded for thunderbird.

How To Fix

Minimum fixed version

1:78.7.0-1~deb10u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade thunderbird

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