Trend Micro patches antivirus scanner

Antivirus scanning engine used in almost all Trend Micro products is plagued by a critical flaw

The antivirus scanning engine used in virtually every Trend Micro product is plagued by a critical flaw that can be used by attackers to take down or hijack PCs, several security organizations said today. A patch has been issued by Trend Micro to plug the hole.

The bug, which can be exploited by getting the scanning engine to process a malformed UPX compressed executable file, can cause a buffer overflow on systems running the Tokyo-based company's Client Server, InterScan, OfficeScan, PC-cillin, ScanMail and ServerProtect product lines, according to Danish vulnerability tracker Secunia and French counterpart, FrSIRT. The two pegged the risk as "Extremely Critical" and "Critical," respectively.

VeriSign iDefense, which was credited with the discovery of the flaw, noted in an online advisory that no authentication was needed by the attacker and a successful attack would allow "complete control of the affected system." iDefense first reported the vulnerability to Trend Micro on Jan. 17.

Antivirus rival Symantec added that an attack could come from several directions, including a Web site or an e-mail message. "Multiple remote vectors could be employed to passively exploit this issue...because the [scanning] engine may be applied against network streams, or automatically applied against e-mail attachments at gateways," Symantec warned subscribers to its DeepSight threat management network.

Trend Micro has issued a signature update that patches the UPX parsing algorithm and includes generic detection for malicious UPX files. A permanent patch will be applied to the scanning engine when it upgrades to version 8.5 in the future. The update can be retrieved manually using the instructions posted on the Trend Web site, or automatically through the products' auto-updater.

A spokesman for Trend, however, was unable to immediately confirm that all users who have automatic updating enabled have received the patch.

Virtually every major antivirus vendor has had to patch vulnerabilities in its security software. Symantec, which saw its own scanning engine marked for attack in 2005, downplayed the threat to Trend Micro users -- even as it hedged its bet. "This type of vulnerability has not been widely exploited in the wild in the past," its DeepSight alert read. "However, developments in kernel-based payloads for publicly available frameworks, such as the Metasploit framework, may expedite the creation of an exploit for this issue."

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.

Gregg Keizer

Computerworld
Show Comments

Cool Tech

Breitling Superocean Heritage Chronographe 44

Learn more >

SanDisk MicroSDXC™ for Nintendo® Switch™

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?