CVE-2021-1126 Explained : Impact and Mitigation
Discover the details of CVE-2021-1126 affecting Cisco Firepower Management Center (FMC). Learn about the impact, technical specifics, and mitigation steps for this information disclosure vulnerability.
A vulnerability in the storage of proxy server credentials of Cisco Firepower Management Center (FMC) could allow an authenticated, local attacker to view credentials for a configured proxy server. This CVE was published on January 13, 2021, under the Cisco advisement.
Understanding CVE-2021-1126
This section provides detailed insights into the vulnerability, its impact, technical details, and mitigation strategies.
What is CVE-2021-1126?
The vulnerability in Cisco Firepower Management Center (FMC) allows a local attacker to view proxy server credentials due to clear-text storage and weak permissions in configuration files.
The Impact of CVE-2021-1126
The impact of this vulnerability is rated as medium with a CVSS base score of 5.5, highlighting a high confidentiality impact. An attacker could exploit this to access sensitive proxy server credentials.
Technical Details of CVE-2021-1126
This section delves into the specifics of the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from the insecure storage and weak permission settings of proxy server credentials within Cisco FMC, enabling unauthorized access.
Affected Systems and Versions
The issue affects all versions of Cisco Firepower Management Center with clear-text proxy server credential storage.
Exploitation Mechanism
An authenticated, local attacker can exploit the vulnerability by accessing the CLI of the software and viewing the contents of the affected configuration files.
Mitigation and Prevention
Protecting systems from CVE-2021-1126 involves immediate actions and long-term security best practices.
Immediate Steps to Take
Secure the vulnerable systems by restricting access to configuration files, monitoring for unauthorized access, and rotating proxy server credentials.
Long-Term Security Practices
Implement strong password policies, regularly update and patch Cisco FMC systems, and conduct security audits to identify and address similar vulnerabilities.
Patching and Updates
Stay informed about security advisories from Cisco, apply recommended patches promptly, and ensure comprehensive cybersecurity measures to mitigate future risks.