CVE-2021-34123 : Security Advisory and Response
Discover the impact and mitigation strategies for CVE-2021-34123, a stack-buffer-overflow vulnerability in atasm version 1.09, allowing arbitrary code execution.
An issue was discovered on atasm, version 1.09, where a stack-buffer-overflow vulnerability allows attackers to execute arbitrary code on the system via a crafted file.
Understanding CVE-2021-34123
This section will provide insights into the impact and technical details of CVE-2021-34123.
What is CVE-2021-34123?
CVE-2021-34123 pertains to a stack-buffer-overflow vulnerability in function aprintf() in asm.c in atasm version 1.09. This flaw enables threat actors to carry out arbitrary code execution on the affected system.
The Impact of CVE-2021-34123
The impact of this vulnerability is severe as it allows malicious actors to execute unauthorized commands on the system by exploiting the stack-buffer-overflow issue.
Technical Details of CVE-2021-34123
This section elaborates on the vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability exists in the aprintf() function in asm.c of atasm version 1.09, leading to a stack-buffer-overflow condition that can be abused to achieve arbitrary code execution.
Affected Systems and Versions
The vulnerability affects atasm version 1.09. No specific vendor or product is mentioned, implying that any system running this version is vulnerable to exploitation.
Exploitation Mechanism
By crafting a malicious file and leveraging the stack-buffer-overflow vulnerability in the aprintf() function, threat actors can execute arbitrary code on the targeted system.
Mitigation and Prevention
In this section, we will discuss the immediate steps, as well as long-term security practices to mitigate the risks associated with CVE-2021-34123.
Immediate Steps to Take
Users are advised to update atasm to a patched version or apply relevant security updates to prevent exploitation. Avoid opening untrusted files to mitigate risks.
Long-Term Security Practices
Implement secure coding practices, conduct regular security audits, and educate users about safe file handling to enhance overall system security.
Patching and Updates
Stay informed about security advisories and promptly apply patches released by the software maintainers to address vulnerabilities like CVE-2021-34123.