CVE-2020-3367 Cisco Secure Web Appliance Privilege Escalation Vulnerability

Medium 5.3 Published 18 Nov 2020 Updated 13 Nov 2024

Authenticated local attackers can inject commands into the log subscription subsystem to execute arbitrary code and gain root privileges on Cisco Secure Web Appliances.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3367?

CVE-2020-3367 is a medium-severity command injection vulnerability in Cisco Asyncos, published on 18 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the log subscription subsystem of Cisco AsyncOS for the Cisco Secure Web Appliance (formerly Web Security Appliance) could allow an authenticated, local attacker to perform command injection and elevate privileges to root. This vulnerability is due to insufficient validation of user-supplied input for the web interface and CLI. 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.

Weakness: CWE-78

Which versions are affected by CVE-2020-3367?

It affects 1 product.

Products include Cisco Asyncos.

How do I fix CVE-2020-3367?

No fix has been published for CVE-2020-3367 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2020-3367 being exploited?

There is no known exploitation of CVE-2020-3367 in the wild and no public exploit code.

All Cisco Asyncos vulnerabilities

Sources

Also known as GHSA-w9wf-7g3r-xgx7.