Security Update for firefox-esr

firefox-esr Updated 02 Oct 2025

Summary

26/01/2017
N/A
Yes i
Unrated
Not published

DLA-800-1: firefox-esr - security update. Affects firefox-esr versions < 45.7.0esr-1~deb7u1. Fixed in 45.7.0esr-1~deb7u1. How to fix ↓

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Background

firefox-esr is a web browser developed by Mozilla. It is a long-term support (LTS) version of Firefox, specifically designed for organizations and enterprises. It provides a secure and stable browsing experience with various features and extensions. However, multiple security issues have been discovered in firefox-esr, which could potentially lead to the execution of arbitrary code, information leaks, or privilege escalation.

Vulnerability Detail

The vulnerability in firefox-esr arises from multiple memory safety errors, use-after-frees, and other implementation flaws. These issues can be exploited by attackers to execute arbitrary code, leak sensitive information, or escalate their privileges. The exact technical details of the vulnerabilities are not provided in this report, but they have been addressed in version 45.7.0esr-1~deb7u1 of firefox-esr.

How To Fix

Minimum fixed version

45.7.0esr-1~deb7u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade firefox-esr

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Conclusion

Multiple security vulnerabilities have been discovered in firefox-esr, which could potentially lead to the execution of arbitrary code, information leaks, or privilege escalation. It is crucial to upgrade your firefox-esr packages to version 45.7.0esr-1~deb7u1 or later to mitigate these vulnerabilities. For further support on vulnerability remediation, you can contact DevNack.com.

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FAQ

Firefox Extended Support Release (ESR) is a version of Firefox specifically designed for organizations and enterprises. It provides a stable and secure browsing experience with long-term support.

The vulnerabilities in firefox-esr could allow attackers to execute arbitrary code on a user's system, leak sensitive information, or escalate their privileges. This could lead to unauthorized access, data breaches, or further compromise of the affected system.

You can check the version of firefox-esr installed on your Debian 7 Wheezy system by running the command 'firefox-esr --version' in a terminal.

No specific workaround is mentioned in the vulnerability report. It is recommended to upgrade to the fixed version of firefox-esr to mitigate the vulnerabilities.

You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, on the Debian LTS wiki.

Related vulnerabilities

Recent vulnerabilities recorded for firefox-esr.

How To Fix

Minimum fixed version

45.7.0esr-1~deb7u1

This is the first release that contains the fix.

sudo apt-get install --only-upgrade firefox-esr

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