CVE-2021-1476 Explained : Impact and Mitigation
Discover details of CVE-2021-1476 affecting Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software. Learn about the impact, technical aspects, and mitigation strategies.
A comprehensive article detailing the CVE-2021-1476 vulnerability found in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software, allowing attackers to execute arbitrary commands with root privileges.
Understanding CVE-2021-1476
This section provides insights into the nature of the vulnerability and its impact.
What is CVE-2021-1476?
The CVE-2021-1476 vulnerability exists in the CLI of Cisco ASA Software and Cisco FTD Software, enabling local attackers to execute commands on the device's underlying OS by exploiting input validation flaws.
The Impact of CVE-2021-1476
With a CVSS base score of 6.7, this vulnerability poses a significant threat, allowing authenticated attackers to gain root privileges and execute arbitrary commands with high confidentiality and integrity impacts.
Technical Details of CVE-2021-1476
Explore the specific technical aspects and implications of the CVE-2021-1476 vulnerability.
Vulnerability Description
The vulnerability stems from inadequate validation of user-supplied commands, granting attackers the ability to execute commands with elevated privileges on affected devices.
Affected Systems and Versions
Cisco Adaptive Security Appliance (ASA) Software versions are impacted by this vulnerability, requiring immediate attention from users to prevent exploitation.
Exploitation Mechanism
By submitting crafted input for certain commands and authenticating to the device with administrator-level credentials, attackers can exploit this vulnerability to execute arbitrary commands on the OS.
Mitigation and Prevention
Learn about the necessary steps to mitigate the CVE-2021-1476 vulnerability and enhance overall security.
Immediate Steps to Take
Users are advised to apply relevant patches and configuration changes to prevent unauthorized command execution and protect the underlying operating system.
Long-Term Security Practices
Implement rigorous security measures such as regular security assessments, user privilege management, and network segmentation to bolster defenses against similar threats.
Patching and Updates
Stay informed about security advisories and updates from Cisco to address vulnerabilities promptly and ensure the safety of network infrastructure.