Firefox users should update their browsers ASAP, security experts warn

An attacker could exploit the vulnerability by persuading a user to access a link, Mozilla says

Firefox users should update their browsers as soon as possible, security experts have warned.

Mozilla issued an important update for its Firefox web browser earlier this week to patch a critical vulnerability it says could allow remote attackers to execute malicious code on computers which are infected.

According to a security advisory published by Cisco, the vulnerability (named CVE-2018-5124) arises from "insufficient sanitisation of HTML fragments" in chrome-privileged documents by the affected software.

Advertisement - Article continues below

"An attacker could exploit the vulnerability by persuading a user to access a link or file that submits malicious input to the affected software," the advisory states. "A successful exploit could allow the attacker to execute arbitrary code with the privileges of the user."

It warns that if the user has elevated privileges, the attacker could compromise the system completely and install programs, create new accounts with full user rights, and view, change or delete data.

However, if the application has been configured to have fewer user rights on the system, the exploitation of this vulnerability could be less impactful, the security experts say.

The affected web browser versions include Firefox 56 (.0, .0.1, .0.2), 57 (.0, .0.1, .0.2, .0.3, .0.4), and 58 (.0). However, Mozilla notes the vulnerability does not affect Firefox browser for Android or Firefox 52 ESR.

Advertisement
Advertisement - Article continues below

Firefox users can download the fix from the company's official website.

Advertisement - Article continues below

The patch arrives just a week or so after Mozilla launched the latest version of its browser, Firefox 58. New features include improved graphics engine and performance optimisations and patches for more than 30 vulnerabilities. Mozilla said it had also addressed this latest vulnerability in the Firefox 58.0.1.

Cisco's security researchers advised users to apply the software update as soon as possible, before hackers exploit the issue, while also avoiding to open links provided in emails or messages if they appear from suspicious or unrecognised sources.

Featured Resources

Preparing for long-term remote working after COVID-19

Learn how to safely and securely enable your remote workforce

Download now

Cloud vs on-premise storage: What’s right for you?

Key considerations driving document storage decisions for businesses

Download now

Staying ahead of the game in the world of data

Create successful marketing campaigns by understanding your customers better

Download now

Transforming productivity

Solutions that facilitate work at full speed

Download now
Advertisement

Recommended

Visit/security/ransomware/356292/university-of-california-gets-fleeced-by-hackers-for-114-million
ransomware

University of California gets fleeced by hackers for $1.14 million

30 Jun 2020
Visit/security/cyber-security/356289/australia-announces-135b-investment-in-cybersecurity
cyber security

Australia announces $1.35 billion investment in cyber security

30 Jun 2020
Visit/cloud/cloud-security/356288/csa-and-issa-form-cybersecurity-partnership
cloud security

CSA and ISSA form cyber security partnership

30 Jun 2020
Visit/business/policy-legislation/356215/senators-propose-a-bill-aimed-at-ending-warrant-proof-encryption
Policy & legislation

Senators propose a bill aimed at ending warrant-proof encryption

24 Jun 2020

Most Popular

Visit/mobile/google-android/356373/over-2-dozen-additional-android-apps-found-stealing-user-data
Google Android

Over two dozen Android apps found stealing user data

7 Jul 2020
Visit/laptops/29190/how-to-find-ram-speed-size-and-type
Laptops

How to find RAM speed, size and type

24 Jun 2020
Visit/cloud/356260/the-road-to-recovery
Sponsored

The road to recovery

30 Jun 2020