At the time of publication, this vulnerability affected devices if they were running a vulnerable release of Cisco ASA Software or FTD Software and had strict FTP inspection enabled.
For information about which Cisco software releases were vulnerable, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Determine Whether FTP Inspection Is Enabled on an ASA
To determine whether FTP inspection is enabled on an ASA, use the show running-config policy-map command and then the show running-config service-policy command.
Use the show running-config policy-map command and check whether the inspect ftp strict command is present in at least one policy map. In the following output, the global-policy policy map includes the inspect ftp strict command:
asa# show running-config policy-map
inspect dns preset_dns_map
inspect ftp strict
inspect h323 h225
Use the show running-config service-policy command and check whether the policy map is applied, either globally or to a single interface. The following output shows the global-policy policy map applied globally:
asa# show running-config service-policy
service-policy global_policy global
If the policy map that contains the inspect ftp strict command is applied globally or to an interface, strict FTP inspection is enabled.
Determine Whether FTP Inspection Is Enabled on FTD
Configuring inspect ftp strict on FTD requires the use of FlexConfig. To determine if inspect ftp strict is enabled on an FTD device, Secure Shell (SSH) to the management interface of the device and use the process previously outlined for the ASA.
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco Firepower Management Center (FMC) Software.