IE zero-day danger growing

Posted by   Virus Bulletin on   Dec 16, 2008

Large numbers of users vulnerable to unpatched problem.

The as-yet unpatched vulnerability in Microsoft's Internet Explorer browser, reported last week and coinciding with the release of the monthly 'Patch Tuesday' security updates, is becoming more serious by the day as more and more infected websites appear to be attempting to exploit the flaw to gain access to visitors' systems.

The vulnerability was thought only to affect IE7 when first discovered, and was being exploited only by limited numbers of targeted trojans. Since then, attacks via the vulnerability have been shown to work on a wide range of Windows and IE variants, and have been widely seeded to both malicious websites and legitimate sites that have been compromised to display malicious content.

A blog post issued by Microsoft on Saturday claimed a 50% rise in attacks spotted in the previous 24 hours, with as many as 0.2% of all web users exposed to the threat. The same day, Trend Micro researchers reckoned that some 6,000 web pages were playing host to exploits targeting the vulnerability. Numbers are thought to have climbed rapidly since then.

Technical details of the vulnerability, including affected systems and possible workarounds, are in the updated advisory from Microsoft, here, or in vulnerability reporting systems at Secunia, US-CERT and Sophos. More coverage is in blog posts from F-Secure, Sophos here and here, from SANS here, and in the Washington Post here.

Posted on 16 December 2008 by Virus Bulletin



Latest posts:

New paper: Collector-stealer: a Russian origin credential and information extractor

In a new paper, F5 researchers Aditya K Sood and Rohit Chaturvedi present a 360 analysis of Collector-stealer, a Russian-origin credential and information extractor.

VB2021 localhost videos available on YouTube

VB has made all VB2021 localhost presentations available on the VB YouTube channel, so you can now watch - and share - any part of the conference freely and without registration.

VB2021 localhost is over, but the content is still available to view!

VB2021 localhost - VB's second virtual conference - took place last week, but you can still watch all the presentations.

VB2021 localhost call for last-minute papers

The call for last-minute papers for VB2021 localhost is now open. Submit before 20 August to have your paper considered for one of the slots reserved for 'hot' research!

New article: Run your malicious VBA macros anywhere!

Kurt Natvig explains how he recompiled malicious VBA macro code to valid harmless Python 3.x code.

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.