A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Web_security_appliance | Cisco | 11.0.0-fcs-250 (including) | 11.0.0-fcs-250 (including) |
| Web_security_appliance | Cisco | 11.5.0-fcs-000 (including) | 11.5.0-fcs-000 (including) |
| Web_security_appliance | Cisco | wsa10.0.0-959 (including) | wsa10.0.0-959 (including) |
| Web_security_appliance | Cisco | wsa10.5.0-fcs-000 (including) | wsa10.5.0-fcs-000 (including) |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: