ZDI-20-956: Advantech WebAccess/HMI Designer PM3 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/HMI Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PM3 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-20-956?
The severity of ZDI-20-956 is classified as critical due to its potential for remote code execution.
How do I fix ZDI-20-956?
To fix ZDI-20-956, apply the latest security patches provided by Advantech for WebAccess/HMI Designer.
What are the potential impacts of ZDI-20-956?
The potential impacts of ZDI-20-956 include unauthorized remote code execution on affected systems.
Is user interaction required to exploit ZDI-20-956?
Yes, user interaction is required as the target must visit a malicious page or open a malicious file.
Who is affected by ZDI-20-956?
Organizations using Advantech WebAccess/HMI Designer are affected by the ZDI-20-956 vulnerability.