CVE-2021-29449 : Exploit Details and Defense Strategies

Multiple privilege escalation vulnerabilities were discovered in version 5.2.4 of Pi-hole, a Linux network-level advertisement and Internet tracker blocking application. This article provides details on the impact, technical details, and mitigation steps for CVE-2021-29449.

Understanding CVE-2021-29449

This section covers the essential information regarding the CVE-2021-29449 vulnerability in Pi-hole.

What is CVE-2021-29449?

CVE-2021-29449 refers to multiple privilege escalation vulnerabilities found in Pi-hole version 5.2.4. These vulnerabilities could allow an attacker to escalate their privileges on the affected system.

The Impact of CVE-2021-29449

The impact of CVE-2021-29449 is rated as MEDIUM. An attacker could exploit these vulnerabilities to elevate their privileges on the system, potentially leading to unauthorized access.

Technical Details of CVE-2021-29449

This section delves into the technical aspects of the CVE-2021-29449 vulnerability.

Vulnerability Description

The vulnerability involves improper privilege management in Pi-hole version 5.2.4, allowing attackers to gain elevated privileges.

Affected Systems and Versions

Pi-hole version 5.2.4 is affected by these privilege escalation vulnerabilities.

Exploitation Mechanism

Attackers with access to the system can exploit these vulnerabilities to escalate their privileges.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent exploitation of CVE-2021-29449 in Pi-hole.

Immediate Steps to Take

Users are advised to update Pi-hole to a non-vulnerable version immediately. Additionally, restrict access to privileged accounts.

Long-Term Security Practices

Implement least privilege principles, regularly update Pi-hole, and monitor for any unusual account activities for long-term security.

Patching and Updates

Stay updated with security patches and version upgrades for Pi-hole to safeguard against known vulnerabilities.