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Adobe Warns of Critical Zero Day Vulnerability

wiredmikey writes "Adobe issued an advisory today on a zero-day vulnerability (CVE-2011-2462) that has come under attack in the wild. According to Adobe, the issue is a U3D memory corruption vulnerability that can be exploited to cause a crash and permit an attacker to hijack a system. So far, there are reports the vulnerability is being exploited in limited, targeted attacks against Adobe Reader 9.x on Windows. However, the bug also affects Adobe Reader and Acrobat 9.4.6 and earlier 9.x versions for UNIX and Macintosh computers, as well as Adobe Reader X (10.1.1) and Acrobat X (10.1.1) and earlier 10.x versions on Windows and Mac. Patches for Windows and Mac users of Adobe Reader X and Acrobat X will come on the next quarterly update, scheduled for Jan. 10, 2012."

17 of 236 comments (clear)

  1. Listed mitigation: Adobe Reader X Protected Mode by Anonymous Coward · · Score: 5, Insightful

    Why on earth isn't "Adobe Reader X Protected Mode" the default?

  2. Patched when? by binaryhat · · Score: 5, Insightful

    Jan. 10, 2012? Why not immediately? Do Adobe coders suck that bad... Honestly I think when a major vulnerability is found, companies should fix it immediately or face penalties.

    1. Re:Patched when? by DERoss · · Score: 5, Informative

      If you follow the "exploited to cause a crash ..." link in the initial Slashdot item, you will see that a fix to Acrobat Reader 9 will be available by this coming Monday. You will also see that, unless you disable Protected View in Acrobat Reader 10, you are not vulnerable and thus can wait a month.

  3. A lack of diversity... by jenningsthecat · · Score: 5, Insightful

    ...leads to increased vulnerability, whether in biology or in software.

    Although there are alternatives to Adobe Reader, none of them is good enough to gain significant market share. And Adobe does everything it can to make competing with it more difficult. So a key piece of software used by a large majority of computer users is bloated beyond belief and so riddled with vulnerabilities that it seems there's a new every day. It sucks, but it's hardly surprising.

    On the web, as in politics, we get what we deserve - or, in this case, we get what other web users deserve, because they vastly outnumber us.

    --
    'The Economy' is a giant Ponzi scheme whose most pitiable suckers are the youngest among us and the yet-unborn.
    1. Re:A lack of diversity... by enoz · · Score: 5, Informative

      I recall the Adobe loading screens on older Acrobat versions. One time while waiting for Acrobat to load its bloated carcass into memory I actually paid attention to the loading messages and noticed "movie.api" among others being loaded. That was the nail in the coffin.

      While switching to non-Adobe PDF software may not be in the power of everyone, you can blacklist the Adobe PDF plugin from running in your web-browser. Apart from improving your internet experience it may also help prevent some drive-by PDF exploits.

    2. Re:A lack of diversity... by mirix · · Score: 5, Interesting

      Evince (gtk) and Okular (ex-kpdf, iirc, Qt) both seem pretty usable to me.

      At work, I'm stuck with windows, and the Evince win32 port seems to work quite well there too. Only issue I ran into was that be default it tried to print things in landscape mode or something like that, and I didn't notice.
      A nice feature is that it does djvu and postscript as well, instead of having multiple readers (although I seem to think ps might not work with windows in default, probably relies on ghostscript or so..?).

      --
      Sent from my PDP-11
  4. Look at the credits for Adobe Reader. by Anonymous Coward · · Score: 5, Insightful

    If you're wondering "How can this happen?", all you need to do is look at the credits of Acrobat Reader. Notice that many of the names are quite clearly Indian. Then it all makes sense.

    1. Re:Look at the credits for Adobe Reader. by Anonymous Coward · · Score: 5, Insightful

      Because anytime you single out a creed, religion, race, or other general status, anyone belonging to said group interprets it as a personal attack and employs all possible methods to censor the shit out of said perceived attacker. It's like a biological kill-switch.

    2. Re:Look at the credits for Adobe Reader. by Anonymous Coward · · Score: 5, Informative

      Why is the parent modded flamebait? S/he's telling the truth. We just discussed this very issue: Does Outsourcing Programming Really Save Money?.

      Somebody please mod the parent up. Sometimes the truth isn't pretty, but it's still the truth. I don't care if feelings get hurt by it. It's still the truth.

    3. Re:Look at the credits for Adobe Reader. by EdIII · · Score: 5, Insightful

      You'd have to be nuts to want Reader unless you simply have no other choice.

      Acrobat 10. Production environment. Multiple servers for remote desktop sessions. Have to have it. Receive secure documents all the time for markup and endorsements and Foxit can't even open it. Let's not even talk about 3rd party PDF support for electronic signatures from capture pads.

      The NERVE of those fuckers to announce a zero-day exploit in the wild with an expected fix date in a quarterly update.

      What the fuck are they smoking? It's the 6th of December you sadistic moronic fucktards. This is the dark side of vendor lock-in. Till that update I have to wonder about the thousands of PDF documents flowing through into the system and from emails. Believe me, there are some workers that will open anything in an email. So it is a real risk already.

      Not that I don't normally, but there is a big difference between a possible threat and a known one.

      It's just amazing for them to announce that with all the business customers they have. The unmitigated gall of those bastards.

  5. FYI: U3D = Universal 3D by Anonymous Coward · · Score: 5, Informative

    According to the Wikipedia article on Universal 3D:

    The format is natively supported by the PDF format and 3D objects in U3D format can be inserted into PDF documents and interactively visualized by Acrobat Reader (since version 7).

    and

    There are four editions to date.

    The first edition is supported by many/all of the various applications mentioned below. It is capable of storing vertex based geometry, color, textures, lighting, bones, and transform based animation.

    The second and third editions correct some errata in the first edition, and the third edition also adds the concept of vendor specified blocks. One such block widely deployed is the RHAdobeMesh block, which provides a more compressed alternative to the mesh blocks defined in the first edition. Deep Exploration and PDF3D-SDK can author this data, and Adobe Acrobat and Reader 8.1 can read this data.

    The fourth edition provides definitions for higher order primitives - curved surfaces.

    I'm guessing it's the vendor specified blocks from the 3rd edition that are causing the problem.

    1. Re:FYI: U3D = Universal 3D by Mojo66 · · Score: 5, Insightful

      Why do we need support for 3D files, embedded file attachments, JavaScript and all that crap in a file format that was originally intended to print documents? I'm glad that there are alternativs to Adobe Reader that just support the old idea of a printable document file format and nothing more, for example Preview on OS X, for other OS see this list. The crazy thing is that Adobe Reader is promoted by a lot of companies that use PDFs to send out bills electronically, i.e. to open the attachment, you need to download Acrobat Reader. Which is not only a wrong statement, but also a suggestion to install an application that has been plagued with security faults.

  6. Re:Listed mitigation: Adobe Reader X Protected Mod by capnkr · · Score: 5, Insightful
    "Blob" is very apt terminology, yet "(Unecessarily) Giant Blob" might be even more accurate. Not sure if these are exact numbers, but they are probably close. From Wikipedia, re: Sumatra PDF:

    It has a 4.4 MB setup file, compared to Adobe Reader's 40.5 MB, for Windows 7. Installed size is 8.4 MB, whereas Adobe Reader requires 335 MB of available disk space.

    Adobe PDF Reader - now with 10-40x the size of what's *really* needed! ***Bonus*** - Includes Critical 0 Day vulnerability, @ no extra charge!!!

    What more could you ask for?

    --
    "...there are some things that can beat smartness and foresight. Awkwardness and stupidity can." ~ Mark Twain
  7. Re:Listed mitigation: Adobe Reader X Protected Mod by FatdogHaiku · · Score: 5, Funny

    Adobe PDF Reader - now with 10-40x the size of what's *really* needed! ***Bonus*** - Includes Critical 0 Day vulnerability, @ no extra charge!!!

    What more could you ask for?

    Ummm, could you maybe toss in an eternally running updater?
    And if the same people could come up with a useless "download manager", well that would just be peachy!

    --
    You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
  8. Re:Listed mitigation: Adobe Reader X Protected Mod by Anonymous Coward · · Score: 5, Informative

    That is not actually true. Adobe Reader is a "conforming implementation" of the ISO 32000 PDF specification. As such, it must support features that your 8.4 MB reader cannot possibly see (such as the ability to pull from CRL's when encountering a digital signature). I used to work for Adobe and I am not here to defend them but in all fairness, you must distinguish the difference between conforming and non-conforming implementations of PDF before comparing.

    Duane

  9. I *prefer* non-conforming by Mathinker · · Score: 5, Insightful

    > you must distinguish the difference between conforming and non-conforming implementations of PDF before comparing

    Your point is valid, however, how much of that ISO standard is, itself, "ooooh, shiny"-ness which is one of the reasons why Reader has so many more possible places of failure? Before discovering better alternatives for reading PDFs under Windows, the first thing I would do to Adobe Reader was to disable scripting support inside PDF documents.

    In other words, I prefer the non-conforming, because that means that (there is a chance that) the implementers might actually be ignoring stupid things which Adobe pushed into the PDF standard which shouldn't be there.

  10. Re:Listed mitigation: Adobe Reader X Protected Mod by Anonymous Coward · · Score: 5, Informative

    Don't forget the shell extension in windows, that enables those zero-day vulns to take effect by just hovering over the file! And unlike the updater and preloader, you can't turn this off without manually meddling with the registry.