Slashdot Mirror


PostNuke Open Source CMS Attacked

ValourX writes "This morning the developers of the free software content management system PostNuke posted a security announcement saying that a vulnerability in the paFileDB download management software allowed an attacker to put up a hacked version of PostNuke for download. That version was live on the PostNuke download site between Sunday at 23:50 GMT and Tuesday at 8:30 GMT. Proprietary software zealots are always saying that open source programs are likely to contain backdoors, but is this situation truly what they mean when they say that? NewsForge (part of OSTG) has the story."

27 of 300 comments (clear)

  1. and closed source? by parawing742 · · Score: 5, Insightful

    and how can we be sure that closed source software doesn't contain backdoors? open the source!

    1. Re:and closed source? by tgma · · Score: 4, Insightful

      Exactly - isn't the point that with an open source project, with a team of developers and users, this backdoor was identified within a couple of days? Whereas with a closed source project, the problem could have gone unnoticed for some time.

      Or worse, it could have been noticed, and left unmentioneded, in the hope that no one would notice, and it would go away by itself. You don't hear about open source projects using the DMCA to get whisteblowers to shut up, do you?

    2. Re:and closed source? by Maestro4k · · Score: 2, Insightful
      • and how can we be sure that closed source software doesn't contain backdoors? open the source!
      We don't, and to make it worse we likely wouldn't find out about an attack like this directly from the company involved. Companies are notoriously wary of even reporting breakins to the FBI because it would look bad to their shareholders. Given that, if the same scenario happenned with a publicly held company selling a closed-source product, would they even bother to notify those who'd downlaoded the trojaned version? After all the code is closed, so they could claim innocence (and how would someone prove otherwise) when the customer's computers got pwned.
    3. Re:and closed source? by acidblood · · Score: 4, Insightful

      Actually, we have an example where a backdoor on a closed source software went unnoticed for a long time. It was only found when, ironically, the software was open-sourced. Story here.

      --

      Join the NFSNET. Our prime goal is making little numbers out of big ones. http://www.nfsnet.org/

    4. Re:and closed source? by l3v1 · · Score: 2, Insightful

      [...]with a team of developers and users, this backdoor was identified within a couple of days[...]

      It's not the fast identification that's the most important, it's the fast solution that is, and no company with closed sources can do that faster and better than the OSC (i.e. open source commnunity).

      --
      I am putting myself to the fullest possible use, which is all I can think that any conscious entity can ever hope to do.
  2. Backdoor.... by commo1 · · Score: 3, Insightful

    And M$ software does not contain any backdoors? If M$ and the (rest) of the proprietary/closed-source/hood-welded-shut consortium is going ot make accusations of this nature, they should be able to back up their stance with, at the very least, an opposite and proveable condition in their own software.

    1. Re:Backdoor.... by MadMirko · · Score: 2, Insightful

      And M$ software does not contain any backdoors?

      Oh come on, that's an argument you would expect from a 3 year old ("but he hit me, too, mommy, I swear"), even if there were proof (is there?) that Microsoft software contained backdoors, that _can not_ be the constant to measure Open Source.

      Stop letting Microsoft dictate what's ok and what's not!

      And cut that "M$" crap, I'm sure someone can point you to the corresponding PA-strip.

    2. Re:Backdoor.... by ch3 · · Score: 2, Insightful

      Considering you can't compile the source yourself you have no proof the binary MS is kinldy giving you for a modest fee is 100% the one you saw the code (and as already mentionned, you only get to see a part of it)

  3. Friend or Foe by jbrelie · · Score: 5, Insightful

    I prefer the backdoors that I can see and deal with to the ones I cannot.

  4. Proprietary No Better by The+Snowman · · Score: 2, Insightful

    Wasn't there a company recently that basically had anonymous FTP access to its corporate servers for over a year? I think it might have been Diebold, a security company. Anyway, security is becoming a pissing match between OSS and proprietary software. All software more than two lines of code has security holes. All software has flaws, be it OSS or proprietary. Why is it such a big deal when one type of software has an issue such as this? The only real issue is when a piece of software or a company has a history of producing software with crappy security. Even then, it does not mean their choice of OSS v. proprietary is bad or wrong, just that they suck at security. E.g. Microsoft has a good process, but their products suck at security. BIND is a perfect OSS example of crappy security. Does that make one process better? No, I do not think so.

    --
    24 beers in a case, 24 hours in a day. Coincidence? I think not!
  5. Proprietary CMSes by cerberusss · · Score: 3, Insightful
    I know a certain proprietary portal/CMS that's often installed along with the rest of the middleware that customers get. I've never encountered an installation where the back end of the portal (where the items reside without any markup) wasn't world readable.

    And while that's not so bad, customers often don't understand its security mechanisms so they leave lots of folders writable as well.

    Pretty embarrassing for $25K per CPU...

    --
    8 of 13 people found this answer helpful. Did you?
  6. Article submitter: -1, troll by MustardMan · · Score: 4, Insightful

    Proprietary software zealots? Huh? I've seen plenty of open source zealots, where zealot is defined (dictionary.com) as "A fanatically committed person." I've never seen anyone be fanatic about proprietary software. I've seen plenty of people say "I make money with proprietary software so that's why I do it," but never someone holding it up as a near-religious institution like the majority of OSS folks. Not that I'm saying it's bad to be an OSS zealot, but like so many things on slashdot, the person who submitted the article is mis-using a buzzword. How can a community that gets so pissed off about people putting i- and e- in front of things, be so accepting of cultivating our own pile of buzzwords and overusing them.

    And before you bother with the standard joke, no, I'm not new here

  7. Raise the bar. by Sheetrock · · Score: 3, Insightful
    I've been around the Internet for a long time -- since the early 90s in fact -- and am thus quite aware of the ruinous activities it has been subjected to by the typical user since then. You know, things like people popping into a random USENET group and treating it like a tech support line, or in the larger picture basically assuming the entire network is there to serve as some form of entertainment.

    When I started, the USENET application would inform me that my message would be spread across tens of thousands of computers at immeasurable cost as a subtle hint to keep things interesting, and Internet Chat required some basic knowledge of Makefiles and attention to documentation before you could run a client. Frankly, things became unmanageable at the point the Internet was made accessible to anybody with a web browser; anybody who's been around this long knows what I'm talking about.

    It's a short hop to realizing that the problems we're experiencing with exploits, virii and worms are the same problem. Intimate knowledge of x86 assembly used to be a requirement -- along with a malcontent-type disposition -- in order to wreak the sort of havoc that today requires fifteen minutes and an Effective VBScript In Fifteen Minutes manual. Every document is now a program, and e-mail doubles as FTP.

    Many experts believe should raise the barrier of entry by requiring programmers to undergo education, certification, and maybe even an oath to do no harm as part of the certification process if going into a security field. It used to take years to do what kids today can do in months; additionally, a would-be programmer who spends a few months picking up Visual Basic or whatever has hardly learned the fundamentals of programming any more than someone who reads a manual about his DVD player has become a laser engineer. I suggest that the field and the general user experience would be greatly enhanced by limiting access to compilers/assemblers (by means of pricing and with the cooperation of the open source community) and by separating macros or other executable content from documents.

    It makes more sense than trying to go out and educate every user. Think about it; in what other field do we "educate" "users"? We don't try to educate people with electrical outlets and let any curious individual perform as a licensed electrician. We don't "educate" passengers and let anyone who cares be a bus driver give it a try. Why are things always so difficult when it comes to computers?

    --

    Try not. Do or do not, there is no try.
    -- Dr. Spock, stardate 2822-3.




    1. Re:Raise the bar. by Wedge+Antilles · · Score: 1, Insightful
      Try not. Do or do not, there is no try.
      -- Dr. Spock, stardate 2822.3.

      Don't you mean Yoda?

      If this is a joke I don't get, I apologize for my stupidity.

  8. Automated PGP checks! by cras · · Score: 3, Insightful
    Every single popular software author should make sure they PGP sign their packages AND verify it automatically at least once a day. I've began doing this for my projects since irssi was backdoored a few years ago. A few different computers download and check the signature of the latest release every single day, and email me if anything went wrong.

    Even better would be if GNU tar supported such signatures automatically. For example if file extension was "tar.pgp", it could force checking the signature, and if it wasn't found or it was invalid, it wouldn't do anything. That way I wouldn't ever have to think about verifying it - I could see from the file name that it should be valid (of course, getting the trusted pgp keys might require more work..). Oh, and of course the .tar.pgp would be backwards compatible with standard tar, they would just contain some extra "checksum.pgp" file or something.

    1. Re:Automated PGP checks! by swillden · · Score: 2, Insightful

      Every single popular software author should make sure they PGP sign their packages AND verify it automatically at least once a day. I've began doing this for my projects since irssi was backdoored a few years ago. A few different computers download and check the signature of the latest release every single day, and email me if anything went wrong.

      Also, you can use GNU Arch, with signed archives. Then, every time you do a commit, your changeset will be signed and every time anyone checks out a copy of the code, arch will automatically check all the signatures (assuming their arch is configured to check signatures).

      Good stuff, especially if you can get your users to check stuff out of a public arch archive rather than download tarballs. Of course, setting up and using arch to check stuff out is not completely trivial... Hmm. We need a browser plugin that allows us to publish a URL that refers to a specific version in a specific arch archive and causes the browser/plugin to retrieve that version, get the signers' keys from key servers, verify all of the signatures and unpack the version into a designated directory. If it was as easy as clicking a link to check the stuff out from the source tree, downloading tarballs could become a thing of the past.

      Note that that wouldn't completely eliminate this kind of problem, because the attackers could sign the archives and upload their own keys to the key servers, but it would make the attack harder to implement and easier to detect. Some automated monitoring of the archive integrity would still be necessary.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
  9. Downloadable Software by TrueJim · · Score: 3, Insightful

    Wouldn't -any- form of downloadable software be vulnerable to this? It seems to me the issue here isn't that the software is open source so much as that the software is downloadable. Proprietary versions of a product can also be hacked. It's just that distributing the software via shinkwrap (mostly) prevents hackers from inserting a hack into the product, not the fact that the software is proprietary. It's true that open source products tend to be downloadable more often than proprietary products, but it's not their "open sourciness" that makes them vulnerable to this particular problem, just their downloadableness.

    --
    I hope that after I die the one word people use to describe me is "resurrected."
  10. Re:Article submitter: -1, troll by Timesprout · · Score: 3, Insightful

    You must be new here.

    Or just not yet cynical enough if you have not learned to accept the double standards that abound around here.

    --
    Do not try to read the dupe, thats impossible. Instead, only try to realize the truth
    What truth?
    There is no dupe
  11. Why the packages weren't signed? by bogado · · Score: 5, Insightful

    This would not have happend and would have been detected if the packages were signed. Maybe it's time for the open-source comunity to think in a standard way to sign tar files. A standard way that would be checked by the tar program it self.

    you get a tar ball, tar verifys that this tar is signed, it checks the signature with either a local or remote public key. If it matches it prints out the name and email for witch the signature is valid. If those match with the developer you're safe (well at least if you trust the developer himself).

    Why tar? Because we need a sign for pristine sources, the ones that are used to create the packages (rpm, deb, whatever) that are usualy already signed by the distribuition.

    --
    []'s Victor Bogado da Silva Lins

    ^[:wq

    1. Re:Why the packages weren't signed? by Stinking+Pig · · Score: 4, Insightful

      you mean like rpm or deb do?

      Anyway, signatures don't solve the problem if the build system is hacked, because it's the trojaned code that gets signed.

      --
      "Nothing was broken, and it's been fixed." -- Jon Carroll
  12. Re:PostNuke by Maestro4k · · Score: 5, Insightful
    • PostNuke is one of the most common content management systems out there. Not to flame or anything, but if you've never heard of them the rock must have been very comfortable to be under.
    Those of us without a need for Content Mangament Systems certainly aren't hiding under any rocks. To give a real-life example I'm sure most people here would have no clue what the program Smartr is for, simply because they have no need to do bus routing. Does that mean they were hiding under a rock oblivious to the world?
  13. Re:You gotta love biased terms by caseydk · · Score: 5, Insightful


    Because if you can label them something bad (racist, homophobe, zealot, nutball, nazi, commie, etc), then you can promptly dismiss their argument without addressing it.

  14. nice of you to label yourself by twitter · · Score: 2, Insightful
    Proprietary software zealots? Huh? ... I've seen plenty of people say "I make money with proprietary software so that's why I do it," but never someone holding it up as a near-religious institution like the majority of OSS folks.

    Yeah, those people calling free software a "cancer", unAmerican, and free software users "thieves". The people who put up Steve Barkto and continue their efforts with people like you. They are constantly going on about "fairness", "balance" and all that while themselves post the most vile garbage and run shakedowns like the BSA and SCO, which threaten and ruin people and businesses. They have even sued school systems. Not content to look bad in the media, they have purchased NBC! That's some of the most self righteous stuff out there. If that's not fanatically committed, what is?

    Yet you would compare greedy jerks like that to people who expect no financial reward for their code or those who notice that free software is generally better than non free software? OK.

    Of course, it does not work. People and companies are judged by what they do, not what they say.

    --

    Friends don't help friends install M$ junk.

  15. Not what Lipner meant when he said "Trapdoor" by Karma+Farmer · · Score: 3, Insightful

    Proprietary software zealots are always saying that open source programs are likely to contain backdoors, but is this situation truly what they mean when they say that?

    Mr. Matzan, I question why the editors would accept a submission by you that was nothing but copy-and-pasting the first paragraph out of your article on News Forge into the Slashdot submission box.

    Regardless, I object to the assertion you've made above. No respected person, zealot or otherwise, has ever said that "open source programs are likely to contain backdoors." The article you cite for this assertion is Steve Lipner of Microsoft making some observations about the difficulty of security, and and contrasting the security process behind open and closed source software. His claims may be questionable, but they are serious and they do deserve a meaningful response. Dismissing those claims by building snarky little strawman through mischaracterization is not the response they deserve.

  16. Re:PostNuke by RollingThunder · · Score: 2, Insightful

    No, because it's a CMS. It -runs websites-. This means that sure, you may not have installed it, but you have probably visited a website that does run it. That's a fair bit different from other types of software where if you don't have a need for it you won't get exposed to it.

  17. Here is a name... by WebCowboy · · Score: 2, Insightful

    I'm guessing it is Microsoft Content Management Server.

    Who else but Microsoft could get a PHB to fork over 25 large for a CMS that is no more capable than some of the free ones out there? Also, the phrases "World Readable" and "Word Writable by default" smell of old Microsoftware.

  18. First off... by King_of_Crunk · · Score: 2, Insightful

    Reading the article you may wish to note the fact that the Postnuke software package does not contain the exploit. It was the download management software they use to distribute the package called Postnuke that was exploited.

    Simply put what was exploited was not not code contained within postnuke but instead a package called pafiledb.

    It would seem everyone is saying its the Postnukes teams fault. If your going to jump someones case you should actually go after the developers of PHPArena.