ALSA-2023:3587 - Thunderbird Security Update

thunderbird Updated 02 Oct 2025

Summary

14/06/2023
N/A
Yes i
Unrated
Not published

ALSA-2023:3587: Important: thunderbird security update. Affects thunderbird versions < 102.12.0-1.el9_2.alma. Fixed in 102.12.0-1.el9_2.alma. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Devnack Penetration testing for web, API and mobile Manual testing by engineers who build software, not an auditor's checklist. Trusted by teams at Swift and Google Talk to Devnack

Background

Mozilla Thunderbird is a standalone mail and newsgroup client. It provides users with a convenient way to manage their emails and participate in newsgroups. Thunderbird is widely used and trusted by individuals and organizations for its robust features and security measures. However, like any software, it is susceptible to vulnerabilities that can compromise its integrity and expose users to potential risks.

Vulnerability Detail

The vulnerability addressed in this security update is twofold:

  1. Click-jacking certificate exceptions through rendering lag (CVE-2023-34414): This vulnerability allows an attacker to trick users into accepting invalid certificates by exploiting rendering lag. By presenting a legitimate-looking page with a delayed rendering process, the attacker can overlay the certificate exception dialog and manipulate user interactions to accept the invalid certificate.

  2. Memory safety bugs fixed in Firefox 114 and Firefox ESR 102.12 (CVE-2023-34416): These memory safety bugs could potentially lead to arbitrary code execution, allowing an attacker to take control of the affected system. By exploiting these bugs, an attacker could execute malicious code and gain unauthorized access to sensitive information or perform unauthorized actions on the system.

How To Fix

Minimum fixed version

102.12.0-1.el9_2.alma

This is the first release that contains the fix.

sudo dnf update thunderbird

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

Conclusion

This security update addresses important vulnerabilities in Thunderbird that could potentially lead to unauthorized access, compromise of sensitive information, or execution of arbitrary code. It is crucial for users of Thunderbird to update their software to the latest version (102.12.0 or later) to mitigate these risks. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for thunderbird →

Share this vulnerability

FAQ

Thunderbird is a standalone mail and newsgroup client developed by Mozilla. It provides users with a convenient way to manage their emails and participate in newsgroups.

The click-jacking vulnerability allows an attacker to trick users into accepting invalid certificates. This can lead to the compromise of sensitive information or unauthorized access to the system.

The memory safety bugs could potentially lead to arbitrary code execution, allowing an attacker to take control of the affected system. This can result in unauthorized access to sensitive information or unauthorized actions on the system.

To update Thunderbird, you can download the latest version from the official Mozilla website or use your distribution's package manager.

No specific workarounds have been mentioned for these vulnerabilities. It is recommended to update Thunderbird to the latest version to address the security issues.

Related vulnerabilities

Recent vulnerabilities recorded for thunderbird.

How To Fix

Minimum fixed version

102.12.0-1.el9_2.alma

This is the first release that contains the fix.

sudo dnf update thunderbird

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback