CVE-2021-38411 Explained : Impact and Mitigation
Learn about CVE-2021-38411, a medium severity cross-site scripting vulnerability impacting Delta Electronics DIALink versions 1.2.4.0 and earlier. Find out the impact, technical details, and mitigation steps here.
This article provides details about CVE-2021-38411, a cross-site scripting vulnerability affecting Delta Electronics DIALink versions 1.2.4.0 and prior.
Understanding CVE-2021-38411
This section delves into the impact, technical details, and mitigation strategies related to CVE-2021-38411.
What is CVE-2021-38411?
Delta Electronics DIALink, specifically versions 1.2.4.0 and earlier, is susceptible to cross-site scripting. An authenticated attacker can exploit this vulnerability by injecting arbitrary JavaScript code into the 'deviceName' parameter of the API modbusWriter-Reader. This exploit may enable remote code execution by malicious actors.
The Impact of CVE-2021-38411
The CVSS v3.1 base score for CVE-2021-38411 is 5.5, indicating a medium severity level. The vulnerability has a low impact on confidentiality and integrity but requires high privileges for successful exploitation. The attack vector is through the network, with low attack complexity.
Technical Details of CVE-2021-38411
This section outlines specific technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from Delta Electronics DIALink's failure to sanitize user input effectively, permitting the injection of malicious JavaScript code.
Affected Systems and Versions
Delta Electronics DIALink versions up to and including 1.2.4.0 are impacted by this vulnerability.
Exploitation Mechanism
By manipulating the 'deviceName' parameter within the modbusWriter-Reader API, authenticated attackers can insert JavaScript code, potentially leading to the execution of malicious commands remotely.
Mitigation and Prevention
Here, you'll find steps to address and prevent the exploitation of CVE-2021-38411.
Immediate Steps to Take
Delta Electronics is aware of the vulnerability and is actively developing an update to patch the security flaw. Users are advised to apply the patch as soon as it becomes available.
Long-Term Security Practices
Apart from patching, organizations should regularly update their systems and implement secure coding practices to prevent cross-site scripting vulnerabilities.
Patching and Updates
Keep an eye on Delta Electronics' official communications for the release of the security update addressing CVE-2021-38411.