CVE-2023-27977 : Vulnerability Insights and Analysis

This CVE, published on March 21, 2023, highlights a vulnerability in the Schneider Electric IGSS products, specifically in the Data Server, Dashboard, and Custom Reports components. The vulnerability could allow an attacker to delete files in the IGSS project report directory by sending crafted messages to the Data Server TCP port.

Understanding CVE-2023-27977

The vulnerability identified in CVE-2023-27977 pertains to insufficient verification of data authenticity in the Schneider Electric IGSS products. This flaw could potentially result in data loss if exploited by a malicious actor.

What is CVE-2023-27977?

CVE-2023-27977 is a CWE-345: Insufficient Verification of Data Authenticity vulnerability that exists in the Data Server of the affected Schneider Electric IGSS products. It poses a risk of allowing unauthorized access to delete files in the project report directory, leading to potential data loss.

The Impact of CVE-2023-27977

If exploited, CVE-2023-27977 could result in significant data loss within the IGSS project report directory. Attackers could leverage this vulnerability to manipulate and delete crucial files, potentially causing operational disruptions and compromise of sensitive information.

Technical Details of CVE-2023-27977

The vulnerability is rated with a CVSSv3.1 base score of 6.5, categorizing it as a medium severity issue. The attack vector is through the network with low complexity, requiring no privileges or user interaction. While the impact on confidentiality is none, the integrity and availability of the affected systems could be compromised at a low level.

Vulnerability Description

The vulnerability arises from inadequate verification of data authenticity in the Data Server component of the IGSS products, enabling attackers to send crafted messages to the TCP port and delete files in the project report directory.

Affected Systems and Versions

The affected products include IGSS Data Server (IGSSdataServer.exe), IGSS Dashboard (DashBoard.exe), and Custom Reports (RMS16.dll) with versions equal to or less than 16.0.0.23040.

Exploitation Mechanism

Exploiting this vulnerability involves sending specific crafted messages to the Data Server TCP port, triggering the unauthorized deletion of files in the IGSS project report directory.

Mitigation and Prevention

To address CVE-2023-27977, immediate actions should be taken to mitigate the risk of exploitation and enhance the security posture of the affected systems.

Immediate Steps to Take

Implement vendor-provided security patches and updates promptly.
Restrict network access to the vulnerable components to trusted sources only.
Monitor network traffic for any suspicious activities targeting the Data Server TCP port.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify potential vulnerabilities.
Keep abreast of security advisories from Schneider Electric and apply recommended security best practices.
Educate users and administrators on cybersecurity awareness and safe handling of sensitive data.

Patching and Updates

Refer to Schneider Electric's security advisory (SEVD-2023-073-04) for detailed information and instructions on applying the necessary patches and updates to remediate CVE-2023-27977.