CVE-2021-23555 : What You Need to Know
Learn about CVE-2021-23555, a critical vulnerability in vm2 prior to 3.9.6 allowing Sandbox Bypass & arbitrary code execution. Get mitigation steps & security best practices.
A critical vulnerability identified as CVE-2021-23555 in the package vm2 version less than 3.9.6 allows for Sandbox Bypass, potentially leading to arbitrary code execution on the host machine.
Understanding CVE-2021-23555
This section will provide insights into the nature and impact of the CVE-2021-23555 vulnerability.
What is CVE-2021-23555?
The CVE-2021-23555 vulnerability exists in versions of the package vm2 that are lower than 3.9.6. It enables a Sandbox Bypass by allowing direct access to host error objects created during the generation of stack traces.
The Impact of CVE-2021-23555
With a CVSS base score of 9.8 and a critical severity level, the Sandbox Bypass vulnerability poses a high risk. Attackers can exploit this flaw to execute arbitrary code on the host system with elevated privileges.
Technical Details of CVE-2021-23555
Delve into the technical specifics of CVE-2021-23555 to understand its implications.
Vulnerability Description
The vulnerability stems from the improper handling of error objects in the host machine, which allows threat actors to bypass the Sandbox protection and execute unauthorized code.
Affected Systems and Versions
The CVE-2021-23555 vulnerability impacts installations of the vm2 package that are running versions earlier than 3.9.6.
Exploitation Mechanism
By leveraging the error objects directly, attackers can circumvent the Sandbox security measures, gaining unauthorized access to the host machine and executing malicious code.
Mitigation and Prevention
Explore the recommended steps to mitigate the risks associated with CVE-2021-23555 and prevent potential exploitation.
Immediate Steps to Take
It is crucial to update the vm2 package to version 3.9.6 or higher to remediate the vulnerability. Additionally, monitoring for any suspicious activities can help detect exploitation attempts.
Long-Term Security Practices
Implementing robust security measures such as regular software updates, access controls, and security monitoring can enhance the overall resilience of the system against similar vulnerabilities.
Patching and Updates
Stay informed about security patches and updates released by the package maintainers to address vulnerabilities like CVE-2021-23555 and enhance the security posture of the system.