CVE-2023-36780 : What You Need to Know

This article provides detailed information about the Skype for Business remote code execution vulnerability, its impact, technical details, and mitigation strategies.

Understanding CVE-2023-36780

This section delves into the nature of the vulnerability in Skype for Business that allows remote code execution.

What is CVE-2023-36780?

The CVE-2023-36780 is a remote code execution vulnerability in Skype for Business Server 2019 CU7 and Skype for Business Server 2015 CU13. It can be exploited by attackers to execute arbitrary code on the target system.

The Impact of CVE-2023-36780

The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.2. Attackers can potentially take control of affected systems, leading to unauthorized access, data theft, and system compromise.

Technical Details of CVE-2023-36780

This section provides specific technical details of the vulnerability, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability allows remote attackers to execute arbitrary code on the affected Skype for Business Server instances, posing a severe security risk.

Affected Systems and Versions

Skype for Business Server 2019 CU7 version 2046.0 (less than 7.0.246.530)
Skype for Business Server 2015 CU13 version 9319.0 (less than 6.0.9319.869)

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted requests to the targeted Skype for Business Server instances, enabling the execution of malicious code.

Mitigation and Prevention

This section outlines steps to mitigate the impact of CVE-2023-36780, including immediate actions to take and long-term security practices to implement.

Immediate Steps to Take

Apply security updates provided by Microsoft for Skype for Business Server 2019 CU7 and Skype for Business Server 2015 CU13.
Implement network segmentation and access controls to limit exposure to potential attacks.

Long-Term Security Practices

Regularly monitor Microsoft security advisories and apply patches promptly.
Conduct security training for IT staff to increase awareness of potential threats and vulnerabilities.

Patching and Updates

Keep Skype for Business Server instances up to date with the latest security patches and updates to protect against known vulnerabilities and exploits.