CVE-2023-33129 : Exploit Details and Defense Strategies
Learn about CVE-2023-33129, a Denial of Service vulnerability in Microsoft SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition, with a medium level threat and impact.
This article provides detailed information about the CVE-2023-33129 vulnerability affecting Microsoft SharePoint systems.
Understanding CVE-2023-33129
This section delves into the nature and impact of the Denial of Service vulnerability in Microsoft SharePoint.
What is CVE-2023-33129?
The CVE-2023-33129 is a Denial of Service vulnerability identified in Microsoft SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition. It can allow an attacker to disrupt services and cause system unavailability.
The Impact of CVE-2023-33129
The vulnerability poses a medium-level threat with a base score of 6.5. If exploited, an attacker can trigger a denial of service condition, leading to service disruption and potentially affecting system availability.
Technical Details of CVE-2023-33129
This section outlines the technical aspects of the CVE-2023-33129 vulnerability.
Vulnerability Description
The CVE-2023-33129 vulnerability in Microsoft SharePoint allows an attacker to exploit the system, resulting in a denial of service, impacting the availability of services.
Affected Systems and Versions
The vulnerability affects Microsoft SharePoint Enterprise Server 2016 versions less than 16.0.5400.1001, SharePoint Server 2019 versions less than 16.0.10399.20005, and SharePoint Server Subscription Edition versions less than 16.0.16130.20548 running on x64-based systems.
Exploitation Mechanism
By sending specially crafted requests to the vulnerable SharePoint servers, an attacker can exhaust system resources and cause the denial of service condition.
Mitigation and Prevention
This section provides guidance on mitigating and preventing CVE-2023-33129 exploitation.
Immediate Steps to Take
- Apply security updates provided by Microsoft to address the vulnerability promptly.
- Monitor network traffic for any suspicious activity that may indicate an ongoing attack.
Long-Term Security Practices
- Regularly update SharePoint servers with the latest security patches and fixes.
- Implement network segmentation to limit the impact of a potential attack on critical systems.
Patching and Updates
Ensure that your Microsoft SharePoint servers are up to date with the latest security updates and patches released by Microsoft.