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Extremely Critical IE6/SP2 Exploit Found

Spad writes "Secunia is reporting on three vulnerabilities in IE6 running on XP SP2. Any of these, in combination with an inappropriate behaviour where the ActiveX Data Object (ADO) model can write arbitrary files, can be exploited to compromise a user's system. Moreover, the vulnerability can be used to delete files from the user's system. Secunia says 'Solution: Use another product.'"

36 of 595 comments (clear)

  1. Test site by Dancin_Santa · · Score: 5, Funny

    They've also posted a test site.

    No, you click it first.

    1. Re:Test site by MarkRose · · Score: 5, Funny

      I click it but nothing happens. When are site designers going to learn there are other browsers besides IE? Don't they know that Firefox's market sharing is growing? Clueless idiots!

      --
      Be relentless!
    2. Re:Test site by CerebusUS · · Score: 4, Informative

      This is NOT a new vulnerability. This is an upgraded severity on a vulnerability that was reported almost 3 months ago:

      From the article:
      Secunia Advisory: SA12889 Print Advisory
      Release Date: 2004-10-20
      Last Update: 2005-01-07 ...

      Changelog:
      2004-10-21: Updated advisory.
      2004-10-28: Added another workaround in "Solution" section and linked to Microsoft Knowledge Base article.
      2004-11-02: Updated with additional information in "Description" and "Solution" section.
      2004-11-29: Updated "Description" section with additional information from Paul.
      2004-12-23: Added link to US-CERT vulnerability note.
      2004-12-25: Updated "Description" section with additional information from Paul and Michael Evanchik.
      2005-01-07: Increased rating. Added link to test. Updated "Description" and "Solution" sections.

      So they upped the severity rating and added another workaround. This isn't really news. You've been vulnerable to this for almost 3 months now.

    3. Re:Test site by Citizen+of+Earth · · Score: 5, Funny

      I know we all want to blame Microsoft for breaking compatibility, but face it, IE is the de facto standard.

      I think that the Firefox developers should give credit where its due. They should organize another pledge campaign to raise $10,000.00 to give to Microsoft as a token of good will for all of the advertising that Microsoft has done for Firefox. Although the actual advertising contribution of Microsoft is at least a thousand times greater, this would help coax Microsoft toward continuing their generous support and [this is the serious part] the press would eat it up, contributing another $5M worth of free advertising.

  2. But can it be used to... by FullCircle · · Score: 5, Funny

    delete IE?

    or maybe install Firefox?

    --
    If tyranny and oppression come to this land, it will be in the guise of fighting a foreign enemy. - James Madison
  3. A worm that deletes everything. by caluml · · Score: 4, Insightful

    We need a worm/virus that deletes everyones files. That would make keeping your computers patched a high priority for most of the users. At the moment, viruses are just something that affects and annoys "other people"

    1. Re:A worm that deletes everything. by LewsTherinKinslayer · · Score: 5, Insightful

      "We need a worm/virus that deletes everyones files. That would make keeping your computers patched a high priority for most of the users. At the moment, viruses are just something that affects and annoys "other people""

      Similarly, we need a firebug to go around lighting people's houses on fire to show how having smoke detectors should be a high priority.

      I realize you're not being 100% serious, but this reasoning is stupid.

    2. Re:A worm that deletes everything. by eofpi · · Score: 4, Funny

      Well, there's always hoping for this to happen....

      --
      Y'know, you blow up one sun and suddenly everyone expects you to walk on water.
    3. Re:A worm that deletes everything. by tom1974 · · Score: 5, Insightful

      That would make keeping your computers patched a high priority for most of the users.

      What has that to do anything with this story? RTFA and please stop blaming the user for everything.

      Running WinXP SP2 and fully patched system. I run Norton anti-virus, spybot, Ad-aware and now MS Antispyware and enabled autoupdate.

      Checked out Secunia, ran their test and my system was found vulnerable.

      What more should I patch?

    4. Re:A worm that deletes everything. by skiman1979 · · Score: 4, Insightful

      It's a shame that Windows users need to install antivirus, spybot, ad-aware, and other scanners (and run them on a monthly...weekly...daily basis to keep their computers clean. Also, don't forget about regedit. Seems Windows registry likes to corrupt itself. I dread the day that Linux gets to that point.

      --
      Having a smoking section in a public restaurant is like having a peeing section in a public swimming pool.
  4. Now we use IE6 and XP only for banking by Green+Salad · · Score: 5, Interesting

    It was mandatory for us to switch to Mozilla. Problem is all our financial vendors make use of Active-X.

    Result: Now we use Mozilla for casual browsing and use insecure products only when conducting important business!

    1. Re:Now we use IE6 and XP only for banking by SharpFang · · Score: 4, Interesting

      Switch to providers who don't lock you in with crappy service. And tell them clearly "Supporting only insecure Microsoft products you don't meet our security standards. Good Bye!"

      I'm not a big company, I'm just a private user. I very recently switched banks I use for personal finances. I left a "common" bank with its units in in several thousands of locations, and introducing new fees and increasing old ones now and then to maintain them all, and with quite crappy and really expensive Internet service, that was supposed to work in Mozilla/Firefox but it more often didn't than did, and I signed up for an Internet bank. Reduced costs of maintenance resulting in zero fees on all operations and account maintenance, no other fees, (except of withdrawal from ATM, very cheap too), and as they are an Internet bank, finally a REALLY professional Internet service. Working flawlessly in any browser, probably including Lynx :)

      I don't know how it works for big companies but I strongly encourage you to leave your old-fashioned banks and move to "Internet banking". Reducing number of channels where money flows lets them focus on keeping the channels they maintain highest quality.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
  5. Whoa by FractusMan · · Score: 4, Informative

    I use Mozilla. I tried that test link, nothing at all happens. I have SP2 installed and all configured proper - except IE, which I didn't bother to touch at all since installation. I figured, hey, I've got an 'untouched' copy of IE here. I open it, I go to the test site, I click that link: WHOA. Holy crap. Help document pops up, and then (the scary part) a command prompt flicks open, does SOMETHING, and then a new window is up. Yikes. I guess some part of me always hoped these exploits were exaggerated in their swiftness and ability to bypass your input.

  6. It fries Safari by kiddailey · · Score: 5, Informative


    Pardon the technical terminology :)

    With Safari 1.2.4 (v125.12), I get a "Safari cannot find the Internet plug-in." error dialog and then the beachball of death. Joy. Well, at least it's not opening the terminal.

    1. Re:It fries Safari by coyotecult · · Score: 5, Funny

      Beachball of death is just so much more fun and sunny sounding than blue screen of death! MS should've reworked their PR on that one.

  7. Surfing with IE by The+Bringer · · Score: 5, Funny

    I have made my own little extreme sport out of it. I fill my old box with all of my financial information, and surf around using IE. I think Microsoft is pretty impressed, because they keep sending me boxes of Viagra and dog crap.

  8. No explanation about what the test does... by kiddailey · · Score: 5, Insightful


    What's scary is that page doesn't even detail what the test will do on your machine! Clicking the link is risky enough even if you did know what it was going to do (ie. how do you know their server hasn't been compromised and the test altered).

    All it says is "The test requires that you have Windows installed in 'c:/windows/'." Uh... Why? is it actually doing something in there? Does it just need to access cmd.exe?

    Click at your own risk, indeed. I suggest running it on a machine that you plan to reformat or under an emulator like VPC.

    1. Re:No explanation about what the test does... by typhoonius · · Score: 4, Informative

      Click at your own risk, indeed. I suggest running it on a machine that you plan to reformat or under an emulator like VPC.

      It opens an HTML Help document, then a command console that quickly closes (dunno what that did), then opens an IE page with this helpful document.

    2. Re:No explanation about what the test does... by 0x461FAB0BD7D2 · · Score: 5, Informative
      The Secunia test uses the ntshared.chm MS-HTML help file, via ActiveX, to call this script, which, in turn, starts a new IE which goes to this site.

      The JMCardle test does something similar, but calls this script instead, which just runs
      mkdir C:\\ie6vulnerability.jmcardle
      in Command Prompt
    3. Re:No explanation about what the test does... by js7a · · Score: 4, Interesting

      This is a pretty good security advisory. It looks like it was actually meant to be understood by end users, and not just other security professionals. Then again, it seems to be taking a measurement without obtaining explicit permission first, and I'm sure that makes people nervous. But under the circumstances, it's probably not a bad decision to just go ahead. I mean, why not?

  9. Fairly simple solution by jazman · · Score: 4, Informative

    although it requires a bit of messing around. IE - Tools - Options - Security.

    select Internet Zone; click Custom Level; set just about everything to Disable or Prompt.

    select Trusted Sites; click Sites; remove https requirement (because the use of https is no guarantee of safety). Then go to Custom Level, then set some items to Prompt, most to Enable.

    This way, anything that isn't in your Trusted Sites list can't get up to any substantial shenanigans. When a page doesn't work, add the site to the Trusted Sites list.

    Then, even if the page is one that attempts to initiate a cascade of pr0n sites that only open more up each time you close one, it may be able to open the first level of the cascade, but unless the cascaded ones are also on your Trusted list that's where the cascade will stop.

    Some pages redirect you to another site; some have frames on different sites and so on, and this can get a bit tedious, but for the most part this makes IE6 invulnerable to Secunia's tests.

    Also I only use IE for secondary browsing, where something REALLY won't work in Firefox, which is also protected by Proxomitron.

  10. Re:Heh by Owndapan · · Score: 5, Interesting
    The exploit worked on my fully patched WinXP SP2 box, running EZ Firewall/Antivirus suite, and running as a non-admin user.

    I think this exploit deserves a bit more attention than "serves clueless n00bs right". Although to be fair my default browser (FireFox) was unaffected ;)

  11. Sophos Anti-virus detects pages using this exploit by kasihan · · Score: 4, Informative

    I use Sophos Anti-virus - and it alerts on the cached copy of the test page as containing a virus/exploit EXP/Phel-A:

    http://www.sophos.com/virusinfo/analyses/expphela. html/


    EXP/Phel-A detects files that exploit the HTML Help Control Vulnerability which affects systems installed with Microsoft Windows XP Service Pack 2.

    This vulnerability allows arbitrary code execution on the vulnerable system by bypassing security constraints established by the operating system.

  12. Re:Heh by Anonymous Coward · · Score: 5, Funny

    Yeah, if your grandma hasn't spent at least $50 on third-party security software plus a yearly antivirus subscription fee, plus made sure to configure her firewall correctly and run virus and spyware scans weekly, plus made sure to create a restricted user account that she runs IE under, why then she has only herself to blame. Obviously Microsoft is doing everything in its power to protect her.

  13. Re:Delete files? by lachlan76 · · Score: 5, Funny

    Actually, I would have said it was more like "Today terrorists have announced that they have armed an atomic bomb in the middle of Los Angeles. If it goes off, it may burn you!"

  14. Ya I pretty much have to recommend no IE now by Sycraft-fu · · Score: 4, Interesting

    I'm a Windows guy, and generally I think MS does good work (please no retarded flames on this I won't respond). However IE is just not worth using as a web browser these days. I have switched to Firefox, switched all lab systems I control, and recommend to everyone that they switch. It is just as fast, in my experience, has support for more of the W3 standards, and is more customizable. The only area it falls behind in it rendering broken code, and that's rare enough it's not a big deal.

    The security issues are another consideration as well. Active X controls in a webpage were a nice idea, as a way to add neat funtionality, however it simply opens up the possibility of too many exploits. It's not a matter of doing better checking of code or such, it's just too much power for a website to have.

    So, even liking MS generally, I have to recommend against IE. Firefox is currently better in all the ways that really matter.

    Also, I've noticed some people mention online banking as a problem. Bank of America works fully with Firefox and has generally been a deceant bank. Though I imagine if Firefox grows much more banks will have little choice but to support it.

  15. Re:BFD by Ghostgate · · Score: 5, Funny

    "Fool me once, shame on you. Fool me 621498 times, shame on me."

    GWB said that, right?

  16. What did Microsoft do to SP2 by Nuskrad · · Score: 5, Interesting

    I'm running XPSP1 with all critical updates installed. To get the exploit to run with IE on my computer I have to manually change the security level to low, allow an unsigned ActiveX control to run when it warns me I shouldn't, and confirm the overwriting of files. What the hell did Microsoft do in SP2 to make it vunerable?

  17. Help me!! by Piranhaa · · Score: 5, Funny

    Hey can someone please tell me how I can find out where my windows is installed? It says here http://secunia.com/internet_explorer_command_execu tion_vulnerability_test that windows needs to be installed in c:\windows\ for their test exploit to work 'properly'

    Computer specs: iBook g3 800mhz...

    I hope that helps a little

  18. Re:Heh by R.Caley · · Score: 4, Insightful
    ...But one with proper security controls put in place like a good virus scanner/firewall/IE settings/anti spyware and creating a non-admin user for web browsing will not be affected.

    And a car with the wheels nailed to the ground, the doors welded and all the windows painted over is pretty safe from theves. When you saw those precautions advised in the manufacturer's literature, would you buy the car?

    --
    _O_
    .|<
    The named which can be named is not the true named
  19. McAfee virusscan itself is also affected in a way! by PommeFritz · · Score: 5, Informative

    I have McAfee virusscan 9.0 installed.
    Clicking the test link with IE proved that my system is vulnerable (if using IE, which I'm not, ofcourse). I had expected McAfee to block this web page, but it didn't. So I went to the internet security options panel in IE, and disabled all ActiveX controls.
    But lo and behold, McAfee virusscan stopped working!
    All their dialogs and panels seem te be using IE's HTML engine for display, and all I get now is first an error "your current security settings prohibit running ActiveX controls on this page. As a result, the page may not display correctly" and then an empty window when trying to access any of McAfee's information or settings dialogs!!
    What a load of crap. I will send them a complaint, and remove their product from my computer right now, to replace it with a good, free virusscanner. Any recommendations? Thanks.

  20. Re:That's exactly my point... by irc.goatse.cx+troll · · Score: 5, Informative

    Launches the new IE window using cmd /c iexplore.

    --
    Pain lasts, kid. Its how you know you're alive. Sometimes I think this growing up thing is just pain management-TheMaxx
  21. Reported to Microsoft ... by un1xl0ser · · Score: 4, Informative

    In case anyone missed this, it was reported to Microsoft on 2004-10-13.

    Three months later, no sign of a patch.

    --
    v4sw6PU$hw6ln6pr4F$ck 4/6$ma3+6u7LNS$w2m4l7U$i2e4+7en6a2X h
  22. Re:Heh by molnarcs · · Score: 5, Informative
    Bad news for everyone - except for some open source advocacy. Gives a nice opportunity to show how MS talks bullshit - when they talk about security. Did anyone notice the date when Microsoft was notified?

    Provided and/or discovered by:
    1) Discovered independently by:
    * http-equiv
    * Andreas Sandblad of Secunia Research (reported to Microsoft on 2004-10-13).

    That's right, Microsoft "we take security very seriously" Corporation has known about this vulnerability for almost two months, yet they leaved it unpatched? Why?

  23. So what you're telling me is that by TrekkieGod · · Score: 4, Interesting
    this has been known for 3 months and there are still no patches available from microsoft? According to windows update, I'm fully patched, according to their test page, IE is still vulnerable. I think that's even worse than it being a new vulnerability.

    Lucky me that I use firefox, and just got IE out to try out that test. And don't give me stuff about "turn off activeX" or some bs like that. The point is, how many non-tech savvie people think they're safe because they've done what we told them to do and kept their computers patched?

    --

    Warning: Opinions known to be heavily biased.

    1. Re:So what you're telling me is that by CerebusUS · · Score: 4, Insightful

      No, What I'm telling you is that this article was written and posted to provide fodder for a flame war.

      You are still vulnerable because Microsoft has determined that this vulnerability is:

      a) unpatchable without ruining the functionality of the product

      and / or

      b) not a large enough threat to worry about.

      Now I'm _not_ going argue whether either of these points is correct or not. But to present these as "New exploits" is typical Slashdot anti-journalism. they did the same thing when they announced the "New" vulnerabilities for Firefox a few days ago. Those were not new either, but neither the submitters or editors bothered to read the articles that were submitted.