CVE-2020-35452 : Vulnerability Insights and Analysis

Apache HTTP Server versions 2.4.0 to 2.4.46 are affected by a stack overflow vulnerability in mod_auth_digest due to a specially crafted Digest nonce. This CVE entry provides insights into the impact, technical details, and mitigation strategies.

Understanding CVE-2020-35452

This section delves into the specifics of the vulnerability and its implications.

What is CVE-2020-35452?

The vulnerability in Apache HTTP Server versions 2.4.0 to 2.4.46 allows a specially crafted Digest nonce to trigger a stack overflow in mod_auth_digest. While there are no reports of successful exploitation, certain compiler or compilation options could potentially enable it with limited consequences.

The Impact of CVE-2020-35452

The impact of this vulnerability is considered low, as there are no confirmed cases of exploitation. However, the potential for stack overflow poses a risk to the affected systems.

Technical Details of CVE-2020-35452

Explore the technical aspects of the vulnerability in this section.

Vulnerability Description

The vulnerability arises from a stack overflow in mod_auth_digest caused by a specially crafted Digest nonce in Apache HTTP Server versions 2.4.0 to 2.4.46.

Affected Systems and Versions

The following versions of Apache HTTP Server are affected:

2.4.46
2.4.43
2.4.41
2.4.39
and more (up to version 2.4.0)

Exploitation Mechanism

While there are no known exploits, specific compiler settings or compilation options could potentially lead to exploitation, albeit with limited impact due to the nature of the overflow.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2020-35452.

Immediate Steps to Take

Monitor official Apache security advisories for updates
Apply patches or security updates promptly
Review compiler configurations for potential vulnerabilities

Long-Term Security Practices

Regularly update Apache HTTP Server to the latest version
Implement secure coding practices to prevent stack overflows
Conduct security audits and penetration testing to identify vulnerabilities

Patching and Updates

Stay informed about security patches and updates released by Apache Software Foundation to address CVE-2020-35452.