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!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Matthew Broersma

Techworld.com
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

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.

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?