CVE-2021-30218 : Security Advisory and Response
Learn about CVE-2021-30218, a vulnerability in Samurai 1.2 container that allows attackers to trigger a NULL pointer dereference via a crafted build file. Find out the impact, technical details, and mitigation steps.
This article provides an overview of CVE-2021-30218, a vulnerability identified in the Samurai 1.2 container. It discusses the impact, technical details, and mitigation strategies associated with this CVE.
Understanding CVE-2021-30218
CVE-2021-30218 pertains to a NULL pointer dereference in the writefile() function located in util.c within the Samurai 1.2 container. This vulnerability can be exploited using a maliciously crafted build file.
What is CVE-2021-30218?
The CVE-2021-30218 vulnerability involves an issue in the Samurai 1.2 container that leads to a NULL pointer dereference within the writefile() function when processing a specifically crafted build file.
The Impact of CVE-2021-30218
Exploitation of this vulnerability could potentially result in a denial of service (DoS) condition or enable an attacker to execute arbitrary code within the context of the affected application.
Technical Details of CVE-2021-30218
The technical details of CVE-2021-30218 include:
Vulnerability Description
Samurai 1.2 is susceptible to a NULL pointer dereference in the writefile() function in util.c due to the mishandling of crafted build files.
Affected Systems and Versions
The vulnerability affects all versions of the Samurai 1.2 container.
Exploitation Mechanism
An attacker can exploit this vulnerability by creating a specially crafted build file to trigger the NULL pointer dereference in the writefile() function of Samurai 1.2.
Mitigation and Prevention
In order to mitigate the risks associated with CVE-2021-30218, consider the following:
Immediate Steps to Take
It is recommended to update the Samurai container to a patched version that addresses the NULL pointer dereference vulnerability.
Long-Term Security Practices
Adopt secure coding practices, conduct regular security assessments, and stay informed about security updates for containerized applications.
Patching and Updates
Ensure that the Samurai container is regularly updated with the latest security patches to protect against known vulnerabilities.