cisco-sa-20190501-wsa-privesc: Cisco Web Security Appliance Privilege Escalation Vulnerability
A vulnerability in the log subscription subsystem of the Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to perform command injection and elevate privileges to root. The vulnerability is due to insufficient validation of user-supplied input on the web and command-line interface. An attacker could exploit this vulnerability by authenticating to the affected device and injecting scripting commands in the scope of the log subscription subsystem. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-wsa-privesc
Affected Software
Event History
Frequently Asked Questions
What is the severity of cisco-sa-20190501-wsa-privesc?
The severity of cisco-sa-20190501-wsa-privesc is rated as high due to the potential for privilege escalation.
How do I fix cisco-sa-20190501-wsa-privesc?
To fix cisco-sa-20190501-wsa-privesc, update your Cisco Web Security Appliance to the latest patched version of AsyncOS Software.
What is the cause of the cisco-sa-20190501-wsa-privesc vulnerability?
The cisco-sa-20190501-wsa-privesc vulnerability is caused by insufficient validation of user-supplied input in the log subscription subsystem.
Who is affected by cisco-sa-20190501-wsa-privesc?
Cisco AsyncOS Software versions 10.1, 10.5, 11.5, and 11.7 are affected by cisco-sa-20190501-wsa-privesc.
Can cisco-sa-20190501-wsa-privesc be exploited remotely?
No, cisco-sa-20190501-wsa-privesc can only be exploited by an authenticated local attacker.