CVE-2021-1419 : Exploit Details and Defense Strategies
Learn about CVE-2021-1419, a vulnerability in Cisco Access Points allowing privilege escalation via SSH management. Find out the impact, affected systems, and mitigation steps.
A vulnerability in the SSH management feature of multiple Cisco Access Points (APs) platforms could allow a local, authenticated user to modify files on the affected device and possibly gain escalated privileges.
Understanding CVE-2021-1419
This CVE refers to a privilege escalation vulnerability in Cisco Access Points (APs) due to improper file operations checking within the SSH management interface.
What is CVE-2021-1419?
The vulnerability in Cisco Access Points allows an authenticated user to modify files on the device through SSH management, potentially leading to escalated privileges.
The Impact of CVE-2021-1419
If exploited successfully, an attacker could gain root user privileges on the affected device, compromising its integrity and confidentiality.
Technical Details of CVE-2021-1419
The vulnerability is rated with a CVSSv3.1 base score of 7.8, indicating a high severity with low complexity and privileges required for exploitation.
Vulnerability Description
The flaw arises from inadequate file operation validation within the SSH management interface of Cisco Access Points, enabling unauthorized file modifications.
Affected Systems and Versions
The vulnerability impacts Cisco Wireless LAN Controllers (WLC) with unspecified versions.
Exploitation Mechanism
An authenticated user can exploit the vulnerability by accessing the affected device through SSH management to make unauthorized configuration changes. No public exploits or announcements are currently known.
Mitigation and Prevention
To mitigate the risk associated with CVE-2021-1419, immediate actions are required along with long-term security practices and timely patching.
Immediate Steps to Take
Network administrators should closely monitor device configurations, apply vendor-recommended security updates, and restrict SSH access to authorized personnel.
Long-Term Security Practices
Regularly review and update security policies, conduct vulnerability assessments, and educate personnel on secure SSH management practices.
Patching and Updates
Refer to the vendor advisory for specific patch availability and follow the recommended upgrade procedures to eliminate the vulnerability.