CVE-2023-37546 Explained : Impact and Mitigation
Learn about CVE-2023-37546, a vulnerability in multiple CODESYS products where crafted network communication requests can lead to a denial-of-service condition. Understand the impact, affected systems, and mitigation strategies.
This article provides detailed information about CVE-2023-37546, a vulnerability related to improper input validation in the CmpApp component of multiple CODESYS products.
Understanding CVE-2023-37546
This section delves into the impact, technical details, and mitigation strategies for CVE-2023-37546.
What is CVE-2023-37546?
CVE-2023-37546 involves a flaw in multiple CODESYS products, where crafted network communication requests can cause the CmpApp component to read from an invalid address after successful user authentication, leading to a potential denial-of-service situation.
The Impact of CVE-2023-37546
The vulnerability in the CmpApp component of CODESYS products can result in a denial-of-service condition, affecting the availability of the system. It is distinct from other related CVEs namely CVE-2023-37545, CVE-2023-37547, CVE-2023-37548, CVE-2023-37549, and CVE-2023-37550.
Technical Details of CVE-2023-37546
This section provides a deeper look into the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
Specific crafted network communication requests in multiple CODESYS product versions can trigger the CmpApp component to internally read from an invalid address, potentially leading to a denial-of-service scenario.
Affected Systems and Versions
The vulnerability affects CODESYS products such as Control for BeagleBone, emPC-A/iMX6, IOT2000, Linux, PFC100, PFC200, PLCnext, Raspberry Pi, WAGO Touch Panels, Control RTE, Runtime System Toolkit, Control Win, Development System V3, and HMI.
Exploitation Mechanism
After successful authentication, exploiting the inconsistency in network communication requests allows threat actors to manipulate the CmpApp component, causing it to read from invalid addresses.
Mitigation and Prevention
This section outlines immediate steps to take and long-term security practices to mitigate the risks posed by CVE-2023-37546.
Immediate Steps to Take
Users are advised to update affected CODESYS products to versions higher than V4.10.0.0 or V3.5.19.20, where the vulnerability has been patched.
Long-Term Security Practices
To enhance overall system security, organizations should implement best practices such as network segmentation, regularly updating software, and conducting security assessments.
Patching and Updates
Regularly check for security updates from CODESYS and apply patches promptly to address known vulnerabilities.