CVE-2017-12341 Explained : Impact and Mitigation
Learn about CVE-2017-12341, a vulnerability in Cisco NX-OS System Software allowing attackers to execute arbitrary commands with root privileges. Find mitigation steps and preventive measures here.
A weakness has been identified in the command-line interface (CLI) of Cisco NX-OS System Software, potentially exploitable by a local, authenticated attacker for a command injection attack. The vulnerability requires valid administrator credentials for successful exploitation.
Understanding CVE-2017-12341
What is CVE-2017-12341?
The vulnerability in Cisco NX-OS System Software allows an attacker to execute arbitrary commands with root privileges by manipulating a software patch installation.
The Impact of CVE-2017-12341
The vulnerability affects various products running Cisco NX-OS System Software, including Multilayer Director Switches, Nexus Series Switches, and Unified Computing System Manager.
Technical Details of CVE-2017-12341
Vulnerability Description
Insufficient validation of user input during software patch installation in Cisco NX-OS System Software leads to a command injection vulnerability.
Affected Systems and Versions
- Products running Cisco NX-OS System Software
Exploitation Mechanism
- Attacker installs a manipulated patch image with a vulnerable operation before patch activation
- Successful exploitation grants the attacker root access to execute arbitrary commands
Mitigation and Prevention
Immediate Steps to Take
- Apply patches and updates from Cisco
- Monitor Cisco's security advisories for relevant information
Long-Term Security Practices
- Implement the principle of least privilege for user access
- Regularly review and update security configurations
Patching and Updates
- Regularly update Cisco NX-OS System Software to the latest version