CVE-2021-46142 : Vulnerability Insights and Analysis

An issue was discovered in uriparser before 0.9.6. It performs invalid free operations in uriNormalizeSyntax.

Understanding CVE-2021-46142

This CVE pertains to a vulnerability in uriparser before version 0.9.6 that leads to improper free operations in uriNormalizeSyntax.

What is CVE-2021-46142?

uriparser, prior to version 0.9.6, experiences incorrect memory deallocation in the uriNormalizeSyntax function, which can result in security issues.

The Impact of CVE-2021-46142

The vulnerability can be exploited by attackers to potentially execute arbitrary code or cause a denial of service (DoS) on the affected system.

Technical Details of CVE-2021-46142

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in the improper handling of memory deallocation within the uriNormalizeSyntax function of uriparser before version 0.9.6.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions before 0.9.6 are affected.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious inputs to trigger the improper free operations in the uriNormalizeSyntax function.

Mitigation and Prevention

It is crucial to take immediate action to mitigate the risks associated with CVE-2021-46142.

Immediate Steps to Take

Users should upgrade uriparser to version 0.9.6 or later to address the vulnerability.
Implement proper input validation mechanisms to prevent malicious inputs.

Long-Term Security Practices

Regularly monitor for security advisories and updates from the uriparser project.
Conduct security assessments and audits to identify and address similar vulnerabilities proactively.

Patching and Updates

Ensure timely application of security patches and updates provided by uriparser to protect against known vulnerabilities.