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 | Affected Version | How to fix |
|---|---|---|
| Advantech WebAccess/HMI Designer |
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Reference Links
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.
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