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Cisco VPN Concentrator 3000 FTP Unauthorized Administrative Access

This module tests for a logic vulnerability in the Cisco VPN Concentrator 3000 series. It is possible to execute some FTP statements without authentication (CWD, RNFR, MKD, RMD, SIZE, CDUP). It also appears to have some memory leak bugs when working with CWD commands. This module simply creates an arbitrary directory, verifies that the directory has been created, then deletes it and verifies deletion to confirm the bug.


Rank

  • Normal

Authors

  • patrick < patrick [at] osisecurity.com.au >

References


Development


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Usage Information

$ msfconsole

                ##                          ###           ##    ##
 ##  ##  #### ###### ####  #####   #####    ##    ####        ######
####### ##  ##  ##  ##         ## ##  ##    ##   ##  ##   ###   ##
####### ######  ##  #####   ####  ##  ##    ##   ##  ##   ##    ##
## # ##     ##  ##  ##  ## ##      #####    ##   ##  ##   ##    ##
##   ##  #### ###   #####   #####     ##   ####   ####   #### ###
                                      ##

msf > use auxiliary/admin/cisco/vpn_3000_ftp_bypass
msf auxiliary(vpn_3000_ftp_bypass) > set RHOST [TARGET IP]
msf auxiliary(vpn_3000_ftp_bypass) > run


Module Options

RHOST The target address
RPORT The target port (default: 21)
CHOST The local client address
CPORT The local client port
ConnectTimeout Maximum number of seconds to establish a TCP connection
Proxies Use a proxy chain
SSL Negotiate SSL for outgoing connections
SSLVersion Specify the version of SSL that should be used (accepted: SSL2, SSL3, TLS1)
VERBOSE Enable detailed status messages
WORKSPACE Specify the workspace for this module
TCP::max_send_size Maxiumum tcp segment size. (0 = disable)
TCP::send_delay Delays inserted before every send. (0 = disable)