CVE-2021-27116 Explained : Impact and Mitigation

A vulnerability was discovered in function MemProf within Beego through version 2.0.2, allowing attackers to exploit symlink attacks locally.

Understanding CVE-2021-27116

This section delves into the specifics of the CVE-2021-27116 vulnerability.

What is CVE-2021-27116?

CVE-2021-27116 is a security flaw found in the file profile.go in the MemProf function of Beego up to version 2.0.2. It enables malicious actors to conduct symlink attacks on a local system.

The Impact of CVE-2021-27116

The impact of this vulnerability is rated as HIGH. It has a CVSS base score of 7.8, with high impacts on confidentiality, integrity, and availability. The attack complexity is low, and the attack vector is local.

Technical Details of CVE-2021-27116

This section outlines the technical details of CVE-2021-27116.

Vulnerability Description

The vulnerability exists in the MemProf function of Beego through version 2.0.2, allowing local attackers to launch symlink attacks, which can have severe repercussions.

Affected Systems and Versions

All versions of Beego up to 2.0.2 are affected by this vulnerability, impacting the security of systems using these versions.

Exploitation Mechanism

Attackers can exploit this vulnerability locally, leveraging symlink attacks to compromise system integrity and confidentiality.

Mitigation and Prevention

Understanding how to mitigate and prevent exploitation of CVE-2021-27116 is crucial for securing systems.

Immediate Steps to Take

Immediate steps include applying patches or updates provided by the Beego project to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

In the long term, implementing secure coding practices, regular security audits, and keeping software up to date can help prevent similar vulnerabilities.

Patching and Updates

Regularly check for security updates from Beego and promptly apply them to ensure your systems are protected against CVE-2021-27116.