CVE-2021-33004 : Exploit Details and Defense Strategies
Discover the impact of CVE-2021-33004, a memory corruption flaw in WebAccess HMI Designer versions 2.1.9.95 and earlier, allowing arbitrary code execution. Learn mitigation steps and best security practices.
A memory corruption vulnerability has been identified in WebAccess HMI Designer versions 2.1.9.95 and prior, which could allow an attacker to execute arbitrary code upon successful exploitation.
Understanding CVE-2021-33004
This CVE pertains to a memory corruption flaw in WebAccess HMI Designer that poses a security risk to the affected versions.
What is CVE-2021-33004?
The vulnerability in WebAccess HMI Designer arises from insufficient validation of user-supplied files, potentially leading to arbitrary code execution through user interaction.
The Impact of CVE-2021-33004
The impact of this CVE is severe as it enables attackers to exploit the memory corruption issue to execute malicious code, compromising the security and integrity of affected systems.
Technical Details of CVE-2021-33004
Below are the technical details associated with CVE-2021-33004:
Vulnerability Description
The vulnerability is categorized as IMPROPER RESTRICTION OF OPERATION WITHIN THE BOUNDS OF A MEMORY BUFFER (CWE-119) and is due to the lack of proper validation of user-supplied files.
Affected Systems and Versions
WebAccess HMI Designer versions 2.1.9.95 and prior are confirmed to be affected by this vulnerability.
Exploitation Mechanism
Successful exploitation requires user interaction on the vulnerable WebAccess HMI Designer, allowing an attacker to execute arbitrary code.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-33004, consider the following steps:
Immediate Steps to Take
- Implement security patches provided by the vendor promptly.
- Restrict user access and permissions on the affected systems.
Long-Term Security Practices
- Conduct regular security assessments and code reviews to identify vulnerabilities.
- Educate users about safe file handling practices and potential security risks.
Patching and Updates
Stay informed about security updates from the vendor and apply patches as soon as they are released to ensure the security of WebAccess HMI Designer.