CVE-2022-39823 : Security Advisory and Response
Discover the impact and mitigation of CVE-2022-39823, a use-after-free vulnerability in Softing OPC UA C++ SDK versions 5.66 through 6.x before 6.10, allowing attackers to execute arbitrary code or cause a denial of service (DoS).
An issue was discovered in Softing OPC UA C++ SDK 5.66 through 6.x before 6.10 where an OPC/UA browse request exceeding the server limit on continuation points may cause a use-after-free error.
Understanding CVE-2022-39823
This section provides insights into the CVE-2022-39823 vulnerability.
What is CVE-2022-39823?
The CVE-2022-39823 is a vulnerability found in Softing OPC UA C++ SDK versions 5.66 through 6.x before 6.10. It arises from an OPC/UA browse request that surpasses the server limit on continuation points, leading to a use-after-free error.
The Impact of CVE-2022-39823
Exploitation of this vulnerability could result in a use-after-free error, potentially allowing an attacker to execute arbitrary code or cause a denial of service (DoS) condition on the affected system.
Technical Details of CVE-2022-39823
In this section, we delve into the technical aspects of the CVE-2022-39823 vulnerability.
Vulnerability Description
The vulnerability in Softing OPC UA C++ SDK allows for a use-after-free error when a specific type of browse request is made, potentially leading to unforeseen consequences.
Affected Systems and Versions
All versions of Softing OPC UA C++ SDK ranging from 5.66 to 6.x before 6.10 are vulnerable to CVE-2022-39823.
Exploitation Mechanism
An attacker can exploit this vulnerability by crafting a malicious OPC/UA browse request that exceeds the server's continuation points limit, triggering the use-after-free error.
Mitigation and Prevention
This section provides guidance on mitigating and preventing the CVE-2022-39823 vulnerability.
Immediate Steps to Take
Immediately update Softing OPC UA C++ SDK to version 6.10 or higher to address the use-after-free error and prevent exploitation.
Long-Term Security Practices
Regularly monitor for updates and security advisories from Softing to stay informed about potential vulnerabilities and implement necessary patches promptly.
Patching and Updates
Apply security patches provided by Softing promptly to ensure that your systems are protected from CVE-2022-39823.