CVE-2022-22519 : Exploit Details and Defense Strategies
Learn about CVE-2022-22519, a high-severity vulnerability affecting various CODESYS Control products. Understand the impact, affected versions, and mitigation steps.
This article provides details about CVE-2022-22519, a vulnerability that affects multiple products by CODESYS, potentially allowing a remote attacker to crash the webserver and the runtime system.
Understanding CVE-2022-22519
CVE-2022-22519 is a vulnerability discovered in CODESYS products that can be exploited by a remote unauthenticated attacker using specific crafted HTTP or HTTPS requests.
What is CVE-2022-22519?
The vulnerability allows the attacker to cause a buffer over-read, leading to a crash of the webserver within the CODESYS Control runtime system.
The Impact of CVE-2022-22519
The impact of this vulnerability is rated as HIGH with a base score of 7.5. It does not require any special privileges from the attacker and has a low attack complexity.
Technical Details of CVE-2022-22519
The vulnerability affects various versions of CODESYS Control products, including CODESYS Control RTE, Win, HMI, and different toolkits such as Embedded Target Visu and Remote Target Visu.
Vulnerability Description
A remote, unauthenticated attacker can exploit the vulnerability by sending specific crafted HTTP or HTTPS requests, triggering a buffer over-read and resulting in a crash of the webserver.
Affected Systems and Versions
The affected versions include V3.5.18.0 for several products like CODESYS Control RTE, Win, and various toolkits. Also impacted are products like Control for BeagleBone, Beckhoff CX9020, emPC-A/iMX6, and others with versions less than V4.5.0.0.
Exploitation Mechanism
The attacker can send malicious HTTP or HTTPS requests to exploit the vulnerability remotely, potentially causing a denial-of-service condition.
Mitigation and Prevention
To protect systems from CVE-2022-22519, immediate steps should be taken to address the vulnerability and prevent exploitation.
Immediate Steps to Take
Organizations using the affected CODESYS products should apply security patches or updates provided by CODESYS promptly to mitigate the risk of exploitation.
Long-Term Security Practices
Security best practices should be implemented, such as network segmentation, access controls, and regular security assessments to enhance overall cybersecurity.
Patching and Updates
Regularly check for security updates and patches from CODESYS to ensure that systems are running the latest, most secure versions of the affected products.