CVE-2021-44540 : What You Need to Know

A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec before bailing.

Understanding CVE-2021-44540

A vulnerability in Privoxy version 3.0.33 has been identified and fixed.

What is CVE-2021-44540?

The CVE-2021-44540 vulnerability in Privoxy involves freeing memory in the get_url_spec_param() function.

The Impact of CVE-2021-44540

The vulnerability could allow attackers to exploit Privoxy and potentially execute arbitrary code or cause a denial of service.

Technical Details of CVE-2021-44540

Details about the technical aspects of the CVE.

Vulnerability Description

The vulnerability was related to freeing memory in the compiled pattern spec within Privoxy.

Affected Systems and Versions

Product: Privoxy
Version: 3.0.33

Exploitation Mechanism

Attackers could exploit this vulnerability to manipulate memory allocation and execution flow.

Mitigation and Prevention

Steps to address and prevent the CVE-2021-44540 vulnerability.

Immediate Steps to Take

Update Privoxy to version 3.0.33.
Regularly monitor security advisories from Privoxy.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Implement network segmentation to minimize attack surfaces.
Conduct regular security assessments and penetration testing.

Patching and Updates

Apply patches released by Privoxy promptly to address security vulnerabilities.