IE bug crashes browsers

Daily Newsletters

Sign up to ZDNet UK's daily newsletter.

NEWS
A simple flaw in Internet Explorer 6.0 causes the browser to crash when it views pages containing malicious HTML code, a security researcher has found. Although many DoS vulnerabilities such as this can lead to the discovery of more serious flaws after further research, AusCERT security researcher Jamie Gillespie said it's unlikely in this case. "Its exploitable for the DoS, for sure, but not every DoS bug leads to execution of code," Gillespie told ZDNet Australia. "Going by what I can see so far, I don't believe it would be (fully) exploitable". The Denial of Service (DoS) bug was disclosed on the bugtraq security mailing list, but at this stage, it's unclear if Microsoft has been kept in the loop. "Going down the disclosure track, I wonder if this has been revealed to Microsoft or this guy has just posted it," Gillespie said. If the bug turns out to be a simple DoS problem, then Microsoft isn't likely to be phased, but it could cause the company headaches if the issue is found to be more serious. The software giant will most likely conduct its own research into the matter, says Gillespie. "There needs to be research as to the cause of the bug, and if there's a fix present it must be regression tested to ensure the fixing of one bug doesn't introduce another more dangerous flaw," he added. The bug is exploited through five lines of HTML code. A test conducted by ZDNet Australia revealed that when embedded in a viewed page, the code causes all open Internet Explorer windows to close. Unlike a buffer overflow, the glitch may turn out to be harmless -- the result of some sloppy programming. "It doesn't look like a buffer overflow... if anything (the code is) not giving Internet Explorer information that it's expecting and that's what's causing the problem," Gillespie said. Microsoft Australia was unable to comment at the time of writing.
For everything Internet-related, from the latest legal and policy-related news, to domain name updates, see ZDNet UK's Internet News Section. Let the editors know what you think in the Mailroom.

Post your comment

In order to post a comment you need to be registered and logged in.

You can also log in with Facebook. Log in or create your ZDNet UK account below

  • Login

Will not be displayed with your comment

By signing up for this service, you indicate that you agree to our Terms and Conditions and have read and understood our Privacy Policy. Questions about membership? Find the answers in the Community FAQ

Get ZDNet UK's daily newsletter

Enter your email address to sign up

ZDNet UK Live

GHar123

I totally dislike pirating of works, I fear that artists will be deterred from creating works if they think that they are going to get ripped off....

27 minutes ago by GHar123 on ACTA stumbles in Germany
JCB33

How dare film makers, artists or anybody that invests in creativity stop us pirating their works for free. I want to be able to walk into my local...

6 hours ago by JCB33 on ACTA stumbles in Germany
Moley

@GrueMaster. I prefer horses for courses rather than one size fits all. I, and I suspect most other computer users, do not really wish to have...

8 hours ago by Moley on A tale of two distros: Ubuntu and Linux Mint
greycynic

The product that scares me every time I have to use it is the Office 2007 version of Excel. The first bug that I found was applying the median...

8 hours ago by greycynic on Ten flawed products that derail productivity
GrueMaster

Nice review and very informative. One thing I'd like to add (in reply to whs001's 1st question), the main reason to have the same interface from...

10 hours ago by GrueMaster on A tale of two distros: Ubuntu and Linux Mint
Frederick Wrigley

I'be been using Mint 12 since the RC came out, and I am far more happy with the Cinnamon, the Mate, and, yes (with extensions), theGnome 3...

11 hours ago by Frederick Wrigley via Facebook on A tale of two distros: Ubuntu and Linux Mint
bdantas

Excellent article. One small correction, though--although a fresh installation of Linux Mint 12 will, indeed, provide the user with a version of...

11 hours ago by bdantas on A tale of two distros: Ubuntu and Linux Mint
Alan Ralph

In related news, the ISPs club together to get the members of the Home Affairs Select Committee (ya goofed on that part, ZDNet UK) copies of "The...

12 hours ago by Alan Ralph via Facebook on MPs urge ISPs to take down terrorist material
Alan Ralph

In related news, the ISPs club together to get the members of the Home Affairs Select Committee (ya goofed on that part, ZDNet UK) copies of "The...

12 hours ago by Alan Ralph via Facebook on MPs urge ISPs to take down terrorist material
Moley

For Gnome 2 die-hards, it is possible to add icons to the bottom panel (or top top panel, if you prefer) which provide the exact Gnome 2...

13 hours ago by Moley on A tale of two distros: Ubuntu and Linux Mint
ramwellian

Your comments would seem pretty naive and immature. Your 'solution' appears to be, "gee, let's all just give in to the hackers and give them...

13 hours ago by ramwellian on Cloud computing security: no more oxymoron?
BugStalker

"Interesting thought ... If you installed Win7 as a dual boot on a machine that previously only had Linux, and it wrecked your Linux installation,...

13 hours ago by BugStalker on Windows 7 Declares War on GRUB
whs001

This is an excellent summary of Ubuntu and Mint and the interface differences between them. Most such articles take a very partisan position for...

13 hours ago by whs001 on A tale of two distros: Ubuntu and Linux Mint
Moley

@ewallace. Not so clear. Anyone can obtain the text, for example from here http://www.ustr.gov/webfm_send/2379. I support ACTA so long as it and...

13 hours ago by Moley on ACTA: Facts, misconceptions and questions
45283

I think WinRT is fantastic. I just wish it was an option for people that didn't want to go through Microsoft's App Store with its attendant...

17 hours ago by 45283 on Why Windows 8 needs architectural hygiene for WOA
Burn-IT

Nine people? £30m? Who's back pocket is that lot going in? And IF they say it is for new buildings, what about all the ones the government has...

18 hours ago by Burn-IT on Police set to launch three £30m e-crime hubs
ewallace

Just to be clear, nobody knows what is in the text of ACTA, here is a photograph of the text of ACTA http://twitpic.com/8h9iju as submitted to the...

18 hours ago by ewallace on ACTA: Facts, misconceptions and questions
fgvrg56

Unfortunately main issue is that ASUS is refusing to accept that they make some mistake on this version of asus Transformer prime. 1 - GPS sensor...

19 hours ago by fgvrg56 on Asus Eee Pad Transformer Prime Wi-Fi & GPS problems?
Ben Woods

@Marcus A fair question. Just talked with Archos which said it was working on an announcement for next week....

20 hours ago by Ben Woods on Archos confirms G9 Ice Cream Sandwich update schedule
Marcus Karlsson

Any update on this, considering the claimed "first week of February"?

21 hours ago by Marcus Karlsson via Facebook on Archos confirms G9 Ice Cream Sandwich update schedule