CVE-2019-1728 Cisco FXOS and NX-OS Software Secure Configuration Bypass Vulnerability
An authenticated local attacker can overwrite configuration files to execute arbitrary commands as root during system boot on Cisco NX-OS devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1728?
CVE-2019-1728 is a medium-severity vulnerability in Cisco Nx-Os, published on 15 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 Secure Configuration Validation functionality of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to run arbitrary commands at system boot time with the privileges of root. The vulnerability is due to a lack of proper validation of system files when the persistent configuration information is read from the file system. An attacker could exploit this vulnerability by authenticating to the device and overwriting the persistent configuration storage with malicious executable files. An exploit could allow the attacker to run arbitrary commands at system startup and those commands will run as the root user. The attacker must have valid administrative credentials for the device.
Weakness: CWE-347
Which versions are affected by CVE-2019-1728?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2019-1728?
No fix has been published for CVE-2019-1728 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1728 being exploited?
There is no known exploitation of CVE-2019-1728 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-27c7-fgf3-w57p.