CVE-2022-24040 : What You Need to Know
Discover how CVE-2022-24040 affects Siemens' Desigo DXR2, PXC3, PXC4, and PXC5 products, allowing attackers to execute a DoS attack by exploiting a flaw in the web application's key creation process.
A vulnerability has been identified in Siemens' products Desigo DXR2, Desigo PXC3, Desigo PXC4, and Desigo PXC5. The vulnerability allows an attacker to cause a denial of service (DoS) condition by exploiting a flaw in the web application's key creation process.
Understanding CVE-2022-24040
This CVE identifies a security issue in Siemens' products that could lead to a DoS attack.
What is CVE-2022-24040?
The vulnerability in Desigo DXR2, Desigo PXC3, Desigo PXC4, and Desigo PXC5 allows an attacker to consume excessive CPU resources by manipulating the PBKDF2 derived key.
The Impact of CVE-2022-24040
An attacker with the user profile access privilege can exploit this vulnerability to disrupt the affected systems through CPU consumption, leading to a denial of service condition.
Technical Details of CVE-2022-24040
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw lies in the web application's failure to set an upper limit on the cost factor of the PBKDF2 derived key during account creation or update.
Affected Systems and Versions
- Desigo DXR2: All versions prior to V01.21.142.5-22
- Desigo PXC3: All versions prior to V01.21.142.4-18
- Desigo PXC4: All versions prior to V02.20.142.10-10884
- Desigo PXC5: All versions prior to V02.20.142.10-10884
Exploitation Mechanism
By setting a PBKDF2 derived key with a very high cost factor and attempting to log in, an attacker can trigger a DoS by causing CPU overload.
Mitigation and Prevention
Mitigation strategies and best practices to address CVE-2022-24040 are crucial.
Immediate Steps to Take
- Apply the security patches provided by Siemens promptly.
- Monitor system resources for any unusual CPU consumption.
Long-Term Security Practices
- Regularly update and patch the affected systems to prevent security vulnerabilities.
- Limit user privileges to reduce the impact of potential attacks.
Patching and Updates
Stay informed about security updates and patches released by Siemens to safeguard against CVE-2022-24040.