CVE-2021-39532 : Vulnerability Insights and Analysis

This CVE record involves a vulnerability in libslax through v0.22.1 that can lead to a Denial of Service attack.

Understanding CVE-2021-39532

This section provides an overview of the vulnerability in libslax through v0.22.1.

What is CVE-2021-39532?

An issue in libslax through v0.22.1 allows an attacker to trigger a NULL pointer dereference in the slaxLexer() function, potentially resulting in Denial of Service.

The Impact of CVE-2021-39532

The vulnerability can be exploited by attackers to cause Denial of Service, affecting the availability of the system.

Technical Details of CVE-2021-39532

Exploring the technical aspects of the vulnerability.

Vulnerability Description

A NULL pointer dereference vulnerability exists in the slaxLexer() function of libslax through v0.22.1, providing an opportunity for attackers to conduct Denial of Service attacks.

Affected Systems and Versions

Affected Versions: v0.22.1 and prior
Affected Components: slaxlexer.c

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific input to trigger the NULL pointer dereference in the slaxLexer() function.

Mitigation and Prevention

Measures to address and prevent the exploitation of CVE-2021-39532.

Immediate Steps to Take

It is recommended to update libslax to a non-vulnerable version or apply patches promptly.
Implement input validation mechanisms to mitigate attacker-controlled inputs.

Long-Term Security Practices

Regularly monitor security advisories for libslax and apply updates promptly.
Conduct security assessments and code reviews to identify and remediate similar vulnerabilities.

Patching and Updates

Apply patches released by the vendor to address the vulnerability.