MS says flaws in patch may be a new vulnerability

Problems that researchers claim went unfixed in an Internet Explorer (IE) security patch released last Wednesday may expose a potential new vulnerability, a Microsoft official said last Friday.

Scott Culp, manager of Microsoft's Security Response Center, said the issues reported to the NTBugtraq mailing list expose a potential new vulnerability that appears similar "from the outside" to previous vulnerabilities when in fact, it affects a different piece of IE code.

"We are investigating it," Culp said. "If it turns out to be bonafide," the company will work on a patch, he said.

In the meantime, Culp urged users to download the available patch that Microsoft released. The patch is designed to address six new vulnerabilities, as well as any previous vulnerabilities, found in Versions 5.01, 5.5 and 6.0 of its IE browser.

The day after the patch was released, reports surfaced that the patch didn't address all of the vulnerabilities it claimed to fix. GreyMagic Software, an Israeli security firm, reported to the NTBugtraq mailing list that Microsoft only patched symptoms of the vulnerability -- "not its root cause."

Culp said the overall scope of the vulnerability exposed by GreyMagic is very similar in appearance outside to the vulnerabilities addressed in Microsoft's latest security bulletin. "It's a completely different vulnerability in terms of where the flaw lies in IE," Culp said.

GreyMagic officials could not be reached for comment at deadline.

Russ Cooper, moderator of the Windows NT NTBugtraq mailing list and an analyst at TruSecure Corp. in Herndon, Va., said only Microsoft would know if the bug affects a different piece of code, since it has access to the source code. He said users are getting concerned that when patches come out, there will be fixes for the patches.

"Administrators are afraid in a number of days or a week, there will be a new version," he said.

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.

Carol Sliwa

PC World
Show Comments

Cool Tech

Toys for Boys

Family Friendly

Stocking Stuffer

Logitech Ultimate Ears Wonderboom Bluetooth Speaker

Learn more >

SmartLens - Clip on Phone Camera Lens Set of 3

Learn more >

Christmas Gift Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

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

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?