CVE-2021-33457 : Vulnerability Insights and Analysis

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

Understanding CVE-2021-33457

This CVE record highlights a vulnerability in yasm version 1.3.0 that can result in a NULL pointer dereference in a specific function.

What is CVE-2021-33457?

CVE-2021-33457 refers to a vulnerability found in yasm version 1.3.0 that allows for a NULL pointer dereference in expand_mmac_params() in modules/preprocs/nasm/nasm-pp.c.

The Impact of CVE-2021-33457

The impact of this CVE includes a potential crash, denial of service, or other security-related issues due to the NULL pointer dereference.

Technical Details of CVE-2021-33457

This section covers the technical aspects of the vulnerability in yasm version 1.3.0.

Vulnerability Description

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

Affected Systems and Versions

The issue affects yasm version 1.3.0 specifically. Other versions may not be impacted by this particular vulnerability.

Exploitation Mechanism

Exploitation of this vulnerability may lead to a crash or denial of service by triggering the NULL pointer dereference in the mentioned function.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent exploitation of CVE-2021-33457.

Immediate Steps to Take

Users are advised to update yasm to a non-vulnerable version or apply patches provided by the vendor to address this vulnerability.

Long-Term Security Practices

Implementing secure coding practices, regular security assessments, and monitoring for updates can help prevent and detect such vulnerabilities in the future.

Patching and Updates

Regularly check for patches and updates from the vendor to ensure that your systems are protected from known vulnerabilities.