Microsoft will patch IE zero day but doesn't give timeline

Attackers are probably trying to develop exploit code, the CTO of Qualys says

Microsoft said Thursday it plans eventually to patch a vulnerability in Internet Explorer 8 that it's known about for seven months, but it didn't say when.

A security research group within Hewlett-Packard called the Zero Day Initiative (ZDI) released details of the flaw on Wednesday after giving Microsoft months to address it. The group withholds details of vulnerabilities to prevent tipping off hackers but eventually publicizes its findings even if a flaw isn't fixed.

Microsoft said it had not detected attacks that used the vulnerability, which is a "use-after-free" flaw, which involves the handling of CMarkup objects.

The company did not give a reason for the long delay but said in a statement that some patches take longer to engineer and that "we must test every one against a huge number of programs, applications and different configurations."

"We continue working to address this issue and will release a security update when ready in order to help protect customers," it said.

To exploit the flaw, an attacker would have to convince a user to visit a malicious website. If the attack were successful, a hacker would have the same rights as the victim on the computer and could run arbitrary code.

Microsoft's next patch release, known as "Patch Tuesday," is scheduled for June 10. It occasionally issues an emergency patch if a vulnerability is being widely used in attacks.

Wolfgang Kandek, CTO of Qualys, wrote that exploit developers are probably studying ZDI's advisory to try to develop an attack.

"We do not know how quickly an exploit will be released, but the remaining time to Patch Tuesday is not that long," he wrote.

The Belgian researcher who found the flaw, Peter Van Eeckhoutte, wrote on his blog on Thursday that although Microsoft has known of the bug for a long time, "I don't believe this is an indication that Microsoft is ignoring bug reports or doesn't care about security at all, so let's not exaggerate things."

"In fact, Microsoft is doing an excellent job in handling vulnerability reports, issuing patches and crediting researchers," he wrote. "But I would be really worried if the bug was actively being exploited and left unpatched for another 180 days."

In its advisory, ZDI recommended that users set the Internet security zone settings in IE 8 to "high," which blocks ActiveX controls and Active Scripting. Also, using Microsoft's Enhanced Mitigation Experience Toolkit (EMET) would provide more defense, it wrote.

Send news tips and comments to jeremy_kirk@idg.com. Follow me on Twitter: @jeremy_kirk

Tags patchessecurityMicrosoftExploits / vulnerabilitiesHewlett-Packard

Recommended

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service

Comments

Comments are now closed.

Most Popular Reviews

Follow Us

Best Deals on GoodGearGuide

Shopping.com

Latest News Articles

Resources

GGG Evaluation Team

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell

LIFEBOOK UH574

The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi

STYLISTIC Q702

The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott

STYLISTIC Q702

My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?