Alessandro Ruggieri

**Name of the Vulnerable Software and Affected Versions** Cisco IOS XR Software (affected versions not specified) **Description** A vulnerability exists in the Command Line Interface (CLI) of Cisco IOS XR Software due to insufficient validation of user-supplied arguments passed to specific CLI commands. This allows an authenticated, local attacker with low privileges to execute arbitrary commands as root on the underlying operating system. Successful exploitation could lead to privilege escalation and complete system compromise. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: Cisco IOS XR Software (affected versions not specified) Description: A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to obtain read/write file system access on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user arguments that are passed to specific CLI commands. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the prompt. A successful exploit could allow the attacker to elevate privileges to root. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability. However, Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. As a temporary workaround, consider restricting access to the CLI commands until a patch is available. Avoid using crafted commands at the prompt to minimize the risk of exploitation.