CVE-2019-1591 Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Shell Escape Vulnerability
Authenticated local attackers can escape restricted shell to execute arbitrary commands with root privileges on Cisco Nexus 9000 ACI switches.
- 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-2019-1591?
CVE-2019-1591 is a high-severity command injection vulnerability in Cisco Nx-Os, published on 6 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in a specific CLI command implementation of Cisco Nexus 9000 Series ACI Mode Switch Software could allow an authenticated, local attacker to escape a restricted shell on an affected device. The vulnerability is due to insufficient sanitization of user-supplied input when issuing a specific CLI command with parameters on an affected device. An attacker could exploit this vulnerability by authenticating to the device CLI and issuing certain commands. A successful exploit could allow the attacker to escape the restricted shell and execute arbitrary commands with root-level privileges on the affected device. This vulnerability only affects Cisco Nexus 9000 Series ACI Mode Switches that are running a release prior to 14.0(3d).
Which versions are affected by CVE-2019-1591?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2019-1591?
No fix has been published for CVE-2019-1591 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-2019-1591 being exploited?
There is no known exploitation of CVE-2019-1591 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-9285-57jw-cj77.