CVE-2021-20206 Explained : Impact and Mitigation
Discover the impact and mitigation strategies for CVE-2021-20206, an improper limitation of path name flaw in containernetworking/cni before version 0.8.1 allowing unauthorized binary execution.
This CVE-2021-20206 article provides an insight into the vulnerability found in containernetworking/cni before version 0.8.1, allowing an attacker to execute unauthorized binaries on the system.
Understanding CVE-2021-20206
This section delves into the impact and technical details of CVE-2021-20206.
What is CVE-2021-20206?
An improper limitation of path name flaw was discovered in containernetworking/cni versions prior to 0.8.1. Attackers can exploit the 'type' field in the network configuration to execute unauthorized binaries besides cni plugins, risking system confidentiality, integrity, and availability.
The Impact of CVE-2021-20206
The vulnerability poses a significant threat to system security and data integrity by allowing malicious users to execute arbitrary binaries using special characters in the plugin load configuration.
Technical Details of CVE-2021-20206
Explore the specific technical aspects of this vulnerability.
Vulnerability Description
In containernetworking/cni versions before 0.8.1, attackers can leverage special characters, such as '../' separators, to reference and execute unauthorized binaries, compromising the system's security.
Affected Systems and Versions
The vulnerability affects containernetworking/cni version 0.8.1 and earlier, exposing systems to potential exploitation by unauthorized users.
Exploitation Mechanism
By manipulating the 'type' field in the network configuration, threat actors can exploit this flaw to execute binary files other than the designated cni plugins/types, jeopardizing system integrity.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-20206 and secure your systems against similar vulnerabilities.
Immediate Steps to Take
System administrators should update containernetworking/cni to version 0.8.1 or newer to eliminate this vulnerability and prevent unauthorized binary execution.
Long-Term Security Practices
Implement robust security measures and access controls to restrict unauthorized access to critical system files and prevent malicious users from executing unauthorized binaries.
Patching and Updates
Regularly apply security patches and updates to containernetworking/cni to address known vulnerabilities and enhance system security.