CVE-2021-39522 : Vulnerability Insights and Analysis

This CVE-2021-39522 article provides detailed information on a security vulnerability in libredwg.

Understanding CVE-2021-39522

This section will help you understand the specifics of the CVE-2021-39522 vulnerability.

What is CVE-2021-39522?

An issue has been identified in libredwg up to version v0.10.1.3751, where bit_wcs2len() in bits.c is susceptible to a heap-based buffer overflow.

The Impact of CVE-2021-39522

The vulnerability could potentially lead to a heap-based buffer overflow attack, allowing an attacker to execute arbitrary code or crash the application.

Technical Details of CVE-2021-39522

In this section, we delve into the technical aspects of CVE-2021-39522.

Vulnerability Description

The vulnerability stems from a heap-based buffer overflow in bit_wcs2len() within bits.c in libredwg.

Affected Systems and Versions

Affected Versions: All versions of libredwg up to v0.10.1.3751
Affected Product: N/A
Affected Vendor: N/A

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious input that triggers the buffer overflow in bit_wcs2len(), potentially leading to code execution.

Mitigation and Prevention

Learn how you can mitigate the risks associated with CVE-2021-39522.

Immediate Steps to Take

Update to a patched version of libredwg to address the vulnerability.
Implement input validation to prevent buffer overflows.

Long-Term Security Practices

Conduct regular security assessments and code reviews.
Stay informed about security advisories and updates.

Patching and Updates

Apply security patches promptly to protect your systems from potential exploits.