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Mozilla Firefox 1.0.7 DoS Exploit

An anonymous reader writes "Whitedust Security are reporting on a new exploit for Firefox which apparently affects all versions of the browser from 1.0.7 down. From the article: "If this exploit has made it out into, or indeed been retrieved from the wild is unknown at this time. However it is clear that this exploit will indeed need patching as soon as possible.""

13 of 438 comments (clear)

  1. Nomenclature... by gowen · · Score: 5, Insightful

    How long has a webpage that makes a browser crash been called a "Denial Of Service Exploit".

    A browser that can be crashed is a very bad thing, but suggesting this is some sort of "Denial Of Service" attack, is just semantics. It doesn't crash the box, and it doesn't flood/break the network. Every other service on your machine runs as normal. That's not a Denial Of Service by the usual definition of the term.

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    Athletic Scholarships to universities make as much sense as academic scholarships to sports teams.
    1. Re:Nomenclature... by gowen · · Score: 5, Insightful
      If you did exactly the same thing to, say, apache or proftpd or mysql
      They're all servers.

      Servers <=> Service <=> Denial Of Service.

      See how that works?
      --
      Athletic Scholarships to universities make as much sense as academic scholarships to sports teams.
    2. Re:Nomenclature... by MightyYar · · Score: 5, Insightful

      Wow... what a big ball of... nothing. All they did was find some html that crashes Firefox. Big deal! Have you seen Bugzilla lately? Should I just start randomly submitting bugs from Bugzilla, start calling them DOS exploits, and make the front page of Slashdot?

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  2. Not too big a deal by Dr.+Evil · · Score: 4, Insightful

    There isn't much incentive for malicious people to crash people's browsers.

    The wording from the security company has me thinking they're just trying to make a name for themselves.

    1. Re:Not too big a deal by stevey · · Score: 5, Insightful

      Not necessarily.

      I reported some DOS bugs against firefox which will kill a browser by essentially saying:

      • Give me a table of 1000000 rows and 1000000 columns.

      The browser dies. Probably because it attempts to either a) allocate all the system's memory and the kernel kills it, or b) at some point memory allocation fails and the program terminates.

      Not all crashes are buffer overflows, or exploitable.

  3. So... by LiquidCoooled · · Score: 5, Insightful

    This can freeze your browser.

    Wheres the vulnerability? when does the spyware attack? Do I need to reinstall Windows?
    Should I buy a virus checker?

    Anyone stupid enough to host this "exploit" on their site are just dumb,
    "oooooh it makes your firefox freeze" BFD - stay away from dodgy parts of the net

    (goatse is a bigger "exploit" and generally leads to complete machine shutdown/restart as you attempt to hide it from your colleagues)

    --
    liqbase :: faster than paper
  4. OMG, this is bad! by ArsenneLupin · · Score: 4, Insightful
    Almost as bad (and scaringly simple) as the <form><input type crash></form> sploit for Internet Exploder.

    I guess I'll just stick with Konqueror.

  5. yeah, WTF? by subtropolis · · Score: 5, Insightful
    There's this exploit, see. Click here to try it. Go on, it's ok...

    I think the poll at the top of the page should ask, "Do you trust WhiteDust security?"

    Oh, wait - that's what the 'Test the exploit' link is for.

    --
    "Our interests are to see if we can't scale it up to something more exciting," he said.
  6. Re:How come there are so many nice hackers? by FirienFirien · · Score: 5, Insightful

    Why are there so many nice hackers in the world? Because some people believe in things like morals and society? Because not everyone is corrupt? Apart from anything else there's always the chance that if someone is a 'nice' hacker then they can act as a model for others, and will get a little return on their investment of time by coming across a warning next time instead of a Yes/Okay dialog against them.

    People who don't want their friends/family affected, people who actually care about the world they live in. I'm surprised that you seem to believe that everyone would be malicious if they could.

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  7. crasher bug != news by CNeb96 · · Score: 5, Insightful

    This crasher bug has no effect on my post 1.5 beta 2 version of firefox on Linux. Gecko/20051017. A new crasher bug is also not news. There are hundreds of ways to crash mozilla. Lets face it most browsers aren't at a state to jump every time there is a new bug to crash or "DOS Them" as the article states. Just another security site trying to make themselves look good at a products expense. How much money does it cause companies like the Mozilla Organization to release a new version of their browser, just to put an end to the bad press of a so called "exploit"?

  8. how's this possible by Douglas+Simmons · · Score: 5, Insightful
    Unless somehow this is truly "in the wild" sasser style, which I highly doubt, I'm more inclined to piss and moan for a fix for all these firefox process running away and ram leaking like ... the levees. But I guess that's just not as sexy a thing to get everyone all freaked out over. Or maybe I'm the only one opening up over a hundred tabs on my pr0n hunts.

    And let's suppose it is in the wild and to get infected I don't have to go to some Russian site selling stolen credit cards. Can anyone see how that could be possible? You'd have to go to a site knowingly and maliciously designed to exploit this, right?

  9. The operative word is "attack". by khasim · · Score: 4, Insightful

    Since you have to go to a specific web page, with a specific browser ... and the only thing that will happen is that your browser will crash ... is "attack" the correct term for this kind of behaviour?

    If you crash your car into a tree, did that tree "attack" you?

    If you crash your car when driving over ice, did that ice "attack" you?

    If you drive your car off a bridge and into a lake, did that lake "attack" you?

    Since you cannot use your car immediately after a crashes, are trees considered a DoS exploit?

  10. Security Bug by digitalgimpus · · Score: 4, Insightful

    Ok, this isn't really a security bug. It's a crasher. If this is a security bug, so is this one (you'll likely need to cp/paste into new window to open) that I discovered a few years ago.

    IMHO "security" bugs are for ones that have an impact on "security". If it doesn't fit that criteria, it's not a security issue.

    A JS permissions exploit would be a security bug. So would the IDN issues, and buffer overflows...

    but a crasher? I think that's pushing the benchmark. It's not really a DoS... it's a crash/hang.

    It would be a security issue if say, it caused 911 to become unavailable, or killed US Radar systems... but not for crashing a web browser.

    I think people have been pushing for a while in hopes of getting new security bugs. And that's all products, not just Moz. There are legitimate security bugs, but I don't think this qualifies. IMHO you need to be able to do something that violates security to be a security issue.