CVE-2023-27979 : Exploit Details and Defense Strategies

This CVE record was published by Schneider Electric on March 21, 2023, highlighting a vulnerability in the Data Server that could potentially lead to a denial of service attack.

Understanding CVE-2023-27979

This section delves into the specifics of the CVE-2023-27979 vulnerability in Schneider Electric's products.

What is CVE-2023-27979?

CVE-2023-27979 is classified as a CWE-345: Insufficient Verification of Data Authenticity vulnerability in the Data Server. This vulnerability could be exploited to rename files within the IGSS project report directory, ultimately resulting in a denial of service attack.

The Impact of CVE-2023-27979

The impact of this vulnerability is rated as medium with a base score of 6.5 according to the CVSSv3.1 metrics. Attackers could potentially disrupt services by sending specifically crafted messages to the Data Server TCP port.

Technical Details of CVE-2023-27979

To better understand the implications and scope of CVE-2023-27979, let's explore the technical details associated with this vulnerability.

Vulnerability Description

The vulnerability allows for the renaming of files in the IGSS project report directory, leading to a denial of service when crafted messages are sent to the Data Server TCP port.

Affected Systems and Versions

The following Schneider Electric products and versions are affected:

IGSS Data Server(IGSSdataServer.exe)(V16.0.0.23040 and prior)
IGSS Dashboard(DashBoard.exe)(V16.0.0.23040 and prior)
Custom Reports(RMS16.dll)(V16.0.0.23040 and prior)

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specific crafted messages to the Data Server TCP port, allowing them to manipulate files within the IGSS project report directory.

Mitigation and Prevention

To safeguard your systems from potential exploitation of CVE-2023-27979, it is crucial to take immediate action and implement effective security measures.

Immediate Steps to Take

Apply the necessary security patches and updates provided by Schneider Electric.
Monitor network traffic for any suspicious activity targeting the Data Server TCP port.

Long-Term Security Practices

Regularly update and patch all software and systems to mitigate known vulnerabilities.
Implement network segmentation to limit access to critical systems.

Patching and Updates

Schneider Electric has likely released security patches to address CVE-2023-27979. Ensure that all affected products are promptly updated to the latest secure versions to prevent potential exploitation of this vulnerability.