CVE-2021-22908 : Security Advisory and Response

A buffer overflow vulnerability in Windows File Resource Profiles in Pulse Connect Secure 9.X allows a remote authenticated user to execute arbitrary code as the root user.

Understanding CVE-2021-22908

This CVE highlights a critical security issue in Pulse Connect Secure affecting versions up to 9.1R11.5.

What is CVE-2021-22908?

The CVE-2021-22908 vulnerability involves a buffer overflow in Windows File Resource Profiles in Pulse Connect Secure 9.X, permitting a remote authenticated user to run malicious code as the root user.

The Impact of CVE-2021-22908

Exploitation of this vulnerability can result in unauthorized execution of arbitrary code, potentially leading to a full system compromise.

Technical Details of CVE-2021-22908

This section discusses the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability allows a remote authenticated attacker to browse SMB shares and execute arbitrary code as the root user in Pulse Connect Secure 9.X.

Affected Systems and Versions

Pulse Connect Secure versions up to 9.1R11.5 are affected by this buffer overflow vulnerability.

Exploitation Mechanism

An attacker with privileges to access SMB shares can exploit the vulnerability to execute unauthorized code as the root user.

Mitigation and Prevention

To address CVE-2021-22908, immediate action and long-term security practices are essential.

Immediate Steps to Take

Update Pulse Connect Secure to version 9.1R11.5 or apply the respective security patch.
Review and restrict privileges for accessing SMB shares.

Long-Term Security Practices

Regularly monitor security advisories and apply software updates promptly.
Implement network segmentation and access control to limit exposure to critical systems.

Patching and Updates

Ensure timely deployment of security patches and updates for Pulse Connect Secure to mitigate the risk of exploitation.