Permissions, Privileges, and Access Controls
The time-based ACL implementation on Cisco Adaptive Security Appliances (ASA) devices, and in Cisco Firewall Services Module (FWSM), does not properly handle periodic statements for the time-range command, which allows remote attackers to bypass intended access restrictions by sending network traffic during denied time periods, aka Bug IDs CSCuf79091 and CSCug45850.
CWE-264 - Permissions Privileges and Access Controls
CWE 264 (permissions, privileges, and access controls) is not a weakness in and of itself, rather it is a category of weaknesses related to the management of permissions, privileges, and other security features used to perform access control. If not addressed, the weaknesses in this category allow attackers to gain privileges for an unintended sphere of control, access sensitive information, and execute arbitrary commands.