Malwarebytes still fixing flaws in antivirus software

The company apologized, saying vulnerabilities are a reality of software development

Malwarebytes said it could take three of four weeks to fix flaws in its consumer product that were found by a Google security researcher.

The company has fixed several server-side vulnerabilities but is still testing a new version of its Anti-Malware product to fix client-side problems, CEO Marcin Kleczynski said in a blog post.

In the meantime, customers can implement a workaround: those using the premium version of Anti-Malware "should enable self-protection under settings to mitigate all of the reported vulnerabilities," he wrote.

Kleczynski apologized, saying vulnerabilities are a reality that come with software development. "While these things happen, they shouldn’t happen to our users," he wrote.

Google researcher Tavis Ormandy uncovered several issues with the Anti-Malware product, including that it doesn't use encryption when downloading fresh signatures.

That opens the possibility for a man-in-the-middle attack, Ormandy said in an advisory. An attacker could potentially replace the signature file.

Ormandy also found three other issues, including a privilege escalation flaw.

He reported the flaws to Malwarebytes in November and gave the company 90 days to fix them before going public.

Ormandy has been analyzing quite a few security products lately and finding alarming problems. Last month, he found a problem in Trend Micro's antivirus software that could be used to steal stored passwords.

Vulnerabilities in security products are especially dangerous since they often have deep access to a computer's operating system.

Dozens of serious vulnerabilities were found last year in antivirus products from vendors including Kaspersky Lab, ESET, Avast, AVG Technologies and Intel Security (formerly McAfee). Security experts have warned for years that flaws in endpoint protection products pose a big risk.

Join the PC World newsletter!

Error: Please check your email address.

Tags AVG Technologiestrend microsecurityIntel Security (formerly McAfee)AvastflawsMalwarebytesesetkaspersky lab

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service
Show Comments

Most Popular Reviews

Latest News Articles


GGG Evaluation Team

Kathy Cassidy


First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni


For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell


The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi


The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott


My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?