CVE-2018-6952 : Vulnerability Insights and Analysis

A double free vulnerability exists in the another_hunk function within pch.c in GNU patch up to version 2.7.6.

Understanding CVE-2018-6952

What is CVE-2018-6952?

This CVE identifies a double free vulnerability in the GNU patch software up to version 2.7.6, specifically within the another_hunk function in pch.c.

The Impact of CVE-2018-6952

The vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by triggering the double free condition.

Technical Details of CVE-2018-6952

Vulnerability Description

The vulnerability is due to improper handling of memory in the another_hunk function in pch.c, allowing an attacker to exploit the double free condition.

Affected Systems and Versions

Affected software: GNU patch up to version 2.7.6

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a malicious input to trigger the double free condition, potentially leading to code execution or denial of service.

Mitigation and Prevention

Immediate Steps to Take

Apply the patches provided by the vendor to address the vulnerability.
Monitor vendor advisories for updates and apply them promptly.

Long-Term Security Practices

Regularly update software to the latest versions to mitigate known vulnerabilities.
Implement secure coding practices to prevent memory-related vulnerabilities.

Patching and Updates

Patch GNU patch software to version 2.7.6 or later to eliminate the double free vulnerability.