CVE-2019-1816 Cisco Web Security Appliance Privilege Escalation Vulnerability
Authenticated local attackers can inject commands into the log subscription subsystem to execute arbitrary code and gain root privileges on Cisco WSA devices.
- 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-2019-1816?
CVE-2019-1816 is a medium-severity command injection vulnerability in Cisco Web Security Appliance, published on 3 May 2019. 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 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.
Weakness: CWE-20
Which versions are affected by CVE-2019-1816?
It affects 1 product.
Products include Cisco Web Security Appliance.
How do I fix CVE-2019-1816?
No fix has been published for CVE-2019-1816 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-2019-1816 being exploited?
There is no known exploitation of CVE-2019-1816 in the wild and no public exploit code.
Other vulnerabilities in Cisco Web Security Appliance
Sources
Also known as GHSA-846c-pcw3-c872.