CVE-2020-15598 : Security Advisory and Response

Trustwave ModSecurity 3.x through 3.0.4 allows denial of service via a special request. The vendor disputes the claims, stating it's not a security issue due to specific conditions required for exploitation.

Understanding CVE-2020-15598

Trustwave ModSecurity 3.x through 3.0.4 vulnerability leading to denial of service.

What is CVE-2020-15598?

Trustwave ModSecurity 3.x through 3.0.4 vulnerability allows denial of service via a special request.
The vendor disputes the security issue due to specific conditions needed for exploitation.

The Impact of CVE-2020-15598

Exploitation can result in a Denial of Service condition.
Regular expression handling in ModSecurity can lead to resource issues.

Technical Details of CVE-2020-15598

Trustwave ModSecurity 3.x through 3.0.4 vulnerability details.

Vulnerability Description

Security issue with how ModSecurity handles regular expressions.
Requires knowledge of specific rule and regular expression nature for exploitation.

Affected Systems and Versions

Trustwave ModSecurity 3.x through 3.0.4.

Exploitation Mechanism

Attacker needs to know about the rule using a problematic regular expression.
Understanding the nature of the regular expression is crucial for exploitation.

Mitigation and Prevention

Steps to mitigate and prevent CVE-2020-15598.

Immediate Steps to Take

Monitor vendor communications for updates.
Implement strict rule configurations to minimize risk.

Long-Term Security Practices

Regularly review and update ModSecurity configurations.
Educate administrators on regular expression usage and resource implications.

Patching and Updates

Stay informed about vendor responses and security advisories.