Microsoft reports two bugs, third identified

Three vulnerabilities have been identified in some versions of Microsoft's Internet Explorer browser and its HTML Help Workshop program.

Microsoft is warning of two bugs in its software that could potentially give unauthorized control or access over a person's computer, while a third problem has been highlighted by a security research company.

One vulnerability revisits the Windows Metafile (WMF) debacle from December, but impacts fewer users. The bug is in Internet Explorer (IE) 5.01 Service Pack 4 on the Windows 2000 Service Pack 4 OS and IE 5.5 Service Pack 2 on Windows Millennium, Microsoft said.

An attacker could gain control if a user opened a malicious e-mail attachment or if a user were persuaded into visiting a Web site that had a specially-crafted WMF image, Microsoft said.

A patch has not been issued, but Microsoft said the issue is under investigation, and an out-of-cycle patch could be provided depending on customer needs. Microsoft typically issues patches on the second Tuesday of the month, due this month on Feb. 14.

A second vulnerability could allow a person with low-user privileges gain higher-level access, Microsoft said. Proof-of-concept code that has been released attempts to exploit overly permissive access controls on third-party application services, along with the default services of Windows XP Service Pack 1 and Windows Server 2003, the company said. No attacks have been reported.

Microsoft said several factors diminish the threat of the problem. Those running Windows XP Service Pack 2 and Windows Server 2003 Service Pack 1 -- the latest updates of the software -- are not affected, and someone who launches an attack would need authenticated access to the affected OS, it said.

Security vendor Secunia detailed a third vulnerability involving Microsoft's HTML Help Workshop, software that can create online help for a software application or Web site content.

Secunia said the problem "is caused due to a boundary error within the handling of a '.hhp' file that contains an overly long string in the 'contents file' field. This can be exploited to cause a stack-based buffer overflow and allows arbitrary code execution when a malicious '.hhp' file is opened."

The bug could allow arbitrary code to be executed on a computer, Secunia said. An exploit has been released, and Secunia advised that untrusted .hhp files not be opened.

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.

Jeremy Kirk

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Aysha Strobbe

Microsoft Office 365/HP Spectre x360

Microsoft Office continues to make a student’s life that little bit easier by offering reliable, easy to use, time-saving functionality, while continuing to develop new features that further enhance what is already a formidable collection of applications

Michael Hargreaves

Microsoft Office 365/Dell XPS 15 2-in-1

I’d recommend a Dell XPS 15 2-in-1 and the new Windows 10 to anyone who needs to get serious work done (before you kick back on your couch with your favourite Netflix show.)

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.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?