CVE-2021-33460 : What You Need to Know

An issue was discovered in yasm version 1.3.0 leading to a NULL pointer dereference in if_condition() in modules/preprocs/nasm/nasm-pp.c.

Understanding CVE-2021-33460

This CVE-2021-33460 involves a vulnerability in yasm version 1.3.0 that can result in a NULL pointer dereference within if_condition() in modules/preprocs/nasm/nasm-pp.c.

What is CVE-2021-33460?

CVE-2021-33460 is a vulnerability found in yasm version 1.3.0 that allows for a NULL pointer dereference in if_condition() in the mentioned file path.

The Impact of CVE-2021-33460

The vulnerability can be exploited by an attacker to cause a denial of service or potentially execute arbitrary code on the affected system.

Technical Details of CVE-2021-33460

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability in version 1.3.0 of yasm results in a NULL pointer dereference within if_condition() in modules/preprocs/nasm/nasm-pp.c.

Affected Systems and Versions

Affected Version: 1.3.0
Affected Component: if_condition() in nasm-pp.c

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a malicious input that triggers the NULL pointer dereference, leading to a potential system crash or arbitrary code execution.

Mitigation and Prevention

Protecting your system from CVE-2021-33460 is crucial to ensure system security and integrity.

Immediate Steps to Take

Patch the vulnerability by updating yasm to a non-affected version or applying the necessary fixes provided by the vendor.
Implement proper input validation mechanisms to prevent malicious inputs triggering the vulnerability.

Long-Term Security Practices

Regularly update software and libraries to mitigate known vulnerabilities.
Monitor security mailing lists and advisories for updates related to yasm or yasm-pp.c components.

Patching and Updates

Stay informed about patches or updates released by the vendor to address CVE-2021-33460.