WinZip warns of security flaws in software

Windows clients running the popular WinZip application are at risk from a number of critical security flaws, according to WinZip Computing and security researchers. The compression/decompression tool is one of the most widely used piece of software on the Windows platform.

WinZip versions 3.x, 6.x, 7.x, 8.x and 9.x contain vulnerabilities that could allow an attacker to execute malicious code on a Windows PC, the vendor warned. In an advisory on Thursday, Danish security firm Secunia gave the bugs a "highly critical" rating, the fourth-highest out of its five severity levels.

While no exploits are known to be circulating, the wide deployment of WinZip makes the vulnerabilities important to patch immediately, WinZip said. Users of older WinZip versions must upgrade to version 9.x in order to get the fix, which is contained in WinZip 9.0 Service Release 1 (SR1). "WinZip Computing recommends that all WinZip users upgrade to WinZip 9.0 SR1 to avoid the possibility of future exploitation of these vulnerabilities," the company said. The update can be found on WinZip's site.

The company disclosed few details about the vulnerabilities, which it said were detected in the course of internal review and testing. Previous versions of WinZip contain potential buffer overflows which could allow an attacker to execute malicious code, according to WinZip and Secunia. In addition, the update fixes a security hole reported to WinZip by an undisclosed user, which could allow an attacker to take over a system by sending a specially-crafted invalid input at the WinZip command line. The command line bug could probably only be exploited on a system whose security had already been compromised in some other way, the company said.

"As of the release of WinZip 9.0 SR1, WinZip Computing was not aware that any of these vulnerabilities had been publicly described or exploited," the company said.

Taking its cue from Microsoft's security-oriented Windows XP Service Pack 2, the WinZip update adds warning messages in situations where the user could be in danger of launching a virus, such as when a user double-clicks on a .exe file compressed within a Zip file.

Late last month, security experts warned of a serious flaw in WinAmp, another popular Windows client application. In that case, however, the bug was discovered only after attackers began using it to execute malicious code on users' desktops.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Matthew Broersma

Techworld.com
Show Comments

Cool Tech

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Breitling Superocean Heritage Chronographe 44

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?