CVE-2023-20084 : Exploit Details and Defense Strategies

This CVE-2023-20084 was published by Cisco on November 22, 2023. It pertains to a vulnerability found in the endpoint software of Cisco Secure Endpoint for Windows that allows an authenticated, local attacker to bypass endpoint protection within a specific time window.

Understanding CVE-2023-20084

This section delves into the details of CVE-2023-20084, shedding light on its nature and implications.

What is CVE-2023-20084?

CVE-2023-20084 is a vulnerability present in the endpoint software of Cisco Secure Endpoint for Windows. It results from a timing issue between different software components, allowing a locally authenticated attacker to circumvent endpoint protection. The exploit involves placing a malicious file in a designated folder and persuading a user to execute it within a limited time frame. This vulnerability specifically impacts systems with the Windows Folder Redirection feature enabled.

The Impact of CVE-2023-20084

If successfully exploited, CVE-2023-20084 enables the attacker to evade the quarantine of malicious files or terminate their processes. This could compromise the security and integrity of the endpoint software, leading to potential system breaches and unauthorized access.

Technical Details of CVE-2023-20084

This section elaborates on the technical aspects of CVE-2023-20084, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Cisco Secure Endpoint for Windows allows an authenticated, local attacker to bypass endpoint protection by exploiting a timing issue between software components. By tricking a user into executing a malicious file within a specific time window, the attacker can avoid detection and protection mechanisms.

Affected Systems and Versions

Multiple versions of Cisco Secure Endpoint, ranging from 6.0.7 to 8.1.7, are affected by this vulnerability. Systems running these versions with the Windows Folder Redirection feature enabled are at risk of exploitation.

Exploitation Mechanism

To exploit CVE-2023-20084, an attacker must first place a malicious file in a designated folder and then persuade a user to execute it within a limited time window. By doing so, the attacker can cause the endpoint software to fail in quarantining the file or terminating its process, thereby bypassing security measures.

Mitigation and Prevention

In light of CVE-2023-20084, it is crucial for organizations and users to take immediate steps to mitigate the risks and prevent potential security breaches.

Immediate Steps to Take

Organizations should disable the Windows Folder Redirection feature on affected systems and implement additional security measures to reduce the risk of exploitation. Users are advised to exercise caution when handling files and executing programs, especially within a limited time window, to prevent malicious activities.

Long-Term Security Practices

Establishing robust security protocols, conducting regular security assessments, and providing user awareness training can enhance overall cybersecurity posture and mitigate vulnerabilities like CVE-2023-20084 in the long run.

Patching and Updates

Cisco may release patches or updates to address CVE-2023-20084. Organizations and users should promptly apply these patches to remediate the vulnerability and strengthen the security of their systems.