CVE-2021-1370 : What You Need to Know
Discover the privilege escalation vulnerability in Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers. Learn about impact, technical details, and mitigation steps.
A vulnerability in a CLI command of Cisco IOS XR Software for the Cisco 8000 Series Routers and Network Convergence System 540 Series Routers running NCS540L software images could allow an authenticated, local attacker to elevate their privilege to root. This CVE was published on February 3, 2021, with a CVSS base score of 7.8.
Understanding CVE-2021-1370
This section will delve into the details of the CVE-2021-1370 vulnerability.
What is CVE-2021-1370?
CVE-2021-1370 is a privilege escalation vulnerability in Cisco IOS XR Software that could enable an authenticated local attacker to raise their privilege level to root on affected devices.
The Impact of CVE-2021-1370
The vulnerability, if exploited successfully, could allow an attacker with low-level privileges to escalate their privilege to root, potentially leading to unauthorized access and control over the affected systems.
Technical Details of CVE-2021-1370
Let's explore the technical aspects of CVE-2021-1370.
Vulnerability Description
The vulnerability results from insufficient validation of command line arguments in the affected Cisco IOS XR Software, allowing attackers to exploit it by entering a crafted command at the prompt.
Affected Systems and Versions
The vulnerability affects Cisco IOS XR Software for the Cisco 8000 Series Routers and Network Convergence System 540 Series Routers running specific NCS540L software images.
Exploitation Mechanism
To exploit this vulnerability, an attacker needs to be authenticated with a valid account on the targeted device and then input a malicious command to elevate their privileges to root.
Mitigation and Prevention
Learn about the necessary steps to mitigate the CVE-2021-1370 vulnerability.
Immediate Steps to Take
Immediately apply relevant security patches provided by Cisco to address the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Enforce a least privilege access policy, monitor network traffic for suspicious activities, and conduct regular security audits to enhance overall cybersecurity.
Patching and Updates
Stay informed about security updates from Cisco and promptly apply patches to ensure the protection of your network infrastructure.