Microsoft Windows Internet Explorer flaw ‘extremely critical, worse than expected’

“An unpatched vulnerability on Internet Explorer is so bad that security expert Secunia has had to add a new category of danger to its rating system,” Nick Farrell reports for The Inquirer. “Instead of being just critical, Secunia says that the unpatched hole is now ‘extremely critical’ which means that Microsoft were extremely stupid to sit on it for six months.”

Farrell reports, “S. Pearson, of computerterrorism.com, has worked out that if a Javascript prompt box was of the right size and form to allow the insertion of custom shellcode a remote attacker can execute arbitrary code embedded into an otherwise normal looking Web page. You can have a look at it in action at http://www.computerterrorism.com

Full article here.

Larry Loeb reports for Security IT Hub, “The vulnerability has been confirmed on a fully patched system with Internet Explorer 6.0 and Microsoft Windows XP SP2, and Internet Explorer 6.0 and Microsoft Windows 2000 SP4. IE 5.x is also considered to be vulnerable… Since MS has not addressed this issue in IE, the only way to mitigate is to disable active scripting for non-trusted sites. Or don’t use IE.”

Full article here.

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In related non-news, Microsoft still sucks.

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New York Times: Mac OS X ‘much more secure than Windows XP’ – September 18, 2003

40 Comments

  1. Hrmmm… tested it on Safari and it was a bit annoying. When you get that huge Javascript dialog it’s way larger than the screen with no Close box or any menu. Just press Escape if it pops up a few times and try to close the little Safari popup that allows it. Eventually it’ll go away.

  2. Just because someone can break into windows doesnt mean that the way they break into it is a FLAW in Windows. If your house gets broken into through one of the windows because someone used a hammer, it doesnt mean that your house has a security flaw, your house was never designed to prevent that type of forced entry. All of these people are being over critical on Microsoft. They need to phrase these “security problems” differently.

  3. emax,

    What if the contractor who built your house neglected to put locks on any of your doors?

    What if he left a gaping hole in the back wall of your bedroom?

    What if your roof was made of tissue paper?

    Who would you blame THEN?

    THAT’s the analogy you should be looking at.

  4. I work at a financial services agency that uses only IE on our desktops (yes, poor me). Our internet access has been shut down all week because of this.

    I hear other high security companies have done the same. I’m surprised this isn’t getting bigger headlines – this is a BIG problem.

  5. I think its time to put MS on “double secret probation”

    Hey Steve Ballmer – fat, stupid and drunk is no way to go through life, son.

    MDN word: thinking

    If you’re still using IE, I’m thinking that you are going to get what you deserve.

  6. that is a real shame Windows users have to suffer so much, I dont think many using OSX bother with Explorer, if there was a way to shed light on PC (pronounced pissy) users ghastly experience… perhaps Safari could be advertised… the catch being you have to buy a Mac ” width=”19″ height=”19″ alt=”smile” style=”border:0;” />

  7. “Microsoft Windows Internet Explorer flaw ‘extremely critical, worse than expected'”

    Should be followed by “Microsoft Windows Internet Explorer has flatlined, not expected to recover without massive brain damage”

    (source code will be accepted in lieu of flowers)

  8. MDN still likes to make Mac users sound like infants instead of rational people who chose the better OS.

    Not sure why they do that.

    Cracking on the “other guy”–that’s hilarious! Keep up the commentary. Making fun of MS is fair game.

    But “M$ sux” and talking about other CEOs being overweight and the like just sound petty. Not MDN’s best work. It alienates people without being funny.

  9. emax said: “All of these people are being over critical on Microsoft. They need to phrase these “security problems” differently.”

    How about theft of $$$, personal identities, intelectual property, etc.? Nasty hole easily exploited. Seriously, what kind of crap code uses hardcoded windows that allow arbitrary code to be executed if you have the right size? Sounds like somebody was extremely lazy – or nepharious.

  10. Is there an exploit in the wild which takes advantage of this vulnerability? I have not heard of any.

    Should Microsoft have fixed this long ago? Yes.

    However…

    There are security vulnerabilities in every OS, Mac OS X and Windows in all its variations. Apple sends out security updates semi-regularly to fix them as they find them and devise solutions. So far no one has unleashed an exploit of any of those Mac OS X vulnerabilities IN THE WILD.

    Microsoft sends out security updates too, however many exploits happen before Microsoft gets the fixes out (if they ever get them out). There are thousands of exploits in the wild on Windows and Windows unique software (e.g., IE 6.x). Those are truly critical and crucial security issues.

    This is a significant vulnerability. Nothing more. IF someone comes up with an exploit before MS fixes it (if MS ever fixes it) THEN we can all sit back and point fingers at Microsoft for not dealing with it sooner. Until that happens this vulnerability is only marginally different than the vulnerabilities in Mac OS X.

    We all start looking like the crazed cult many claim we are when we point to a Windows vulnerability with no exploits and denigrate Microsoft then turn around and whine about “cluless” reporters who do the same with Mac OS X.

    There are more than enough exploits for Windows to point to and laugh at. This isn’t one of them — YET.

  11. In related news: Normally I would agree with you.

    However, and I have posted this before, indeed, years before: It never ceases to amaze me that MS has not been held responsible, either civilly or criminally) for its repeated failure to fix its product. MS is a global corporation, and as such, is presumbed to be competent in its duty to provide a product that is at least a merchantable, despite what their EOLA states. MS’s inability to do so, is either evidence of complete and total incompetence (nonfeasance) or intentional malfeasance.

    I don’t say this lightly: MS is evil and the heads of MS are evil. I firmly believe that MS is not totally incompetent, but is instead, intentionally perpetuating these problems. (No, I don’t wear a tinfoil hat) The question is why?

    maczac

  12. “IF someone comes up with an exploit before MS fixes it”

    How about WHEN (if not already because we haven’t heard about it yet)?

    How about tjc’s response where the financial services company that s/he works at considers it dire enough to shut down Internet access?

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