CVE-2021-28249 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2021-28249, a vulnerability affecting CA eHealth Performance Manager through version 6.3.2.12, leading to Privilege Escalation via a Dynamically Linked Shared Object Library.

Understanding CVE-2021-28249

This section delves into the nature of CVE-2021-28249 and its implications.

What is CVE-2021-28249?

CVE-2021-28249 describes a vulnerability in CA eHealth Performance Manager where an attacker can escalate privileges by creating a malicious library in a specific path.

The Impact of CVE-2021-28249

The vulnerability allows an ehealth user to execute code as the root user, potentially leading to unauthorized access and control.

Technical Details of CVE-2021-28249

This section discusses the technical aspects of the CVE-2021-28249 vulnerability.

Vulnerability Description

The vulnerability arises from the dynamic linking of a malicious library by the ehealth user, enabling execution as the root user.

Affected Systems and Versions

CA eHealth Performance Manager versions up to 6.3.2.12 are impacted by this vulnerability.

Exploitation Mechanism

To exploit this vulnerability, the ehealth user must create and link a specific library when the FtpCollector executable is run.

Mitigation and Prevention

This section outlines steps to mitigate and prevent exploitation of CVE-2021-28249.

Immediate Steps to Take

Users are advised to discontinue the use of unsupported versions of the CA eHealth Performance Manager and upgrade to secure versions.

Long-Term Security Practices

Regular patching and updating of software are essential security practices to prevent such vulnerabilities.

Patching and Updates

Maintainers must ensure that all software components are up-to-date with the latest security patches to reduce the risk of privilege escalation attacks.