ZDI-20-951: Advantech WebAccess/HMI Designer PM3 File Parsing Heap-based Buffer Overflow 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 the length of user-supplied data prior to copying it to a fixed-length heap-based 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-20-951?
ZDI-20-951 is classified as a critical vulnerability due to its ability to allow remote code execution.
How do I fix ZDI-20-951?
To fix ZDI-20-951, you should update Advantech WebAccess/HMI Designer to the latest version provided by the vendor.
What systems are affected by ZDI-20-951?
ZDI-20-951 affects installations of Advantech WebAccess/HMI Designer.
What is the nature of the attack for ZDI-20-951?
The attack for ZDI-20-951 requires user interaction, typically involving visiting a malicious webpage or opening a compromised file.
Is ZDI-20-951 easy to exploit?
While ZDI-20-951 requires user interaction, it can still be exploited relatively easily if targets are tricked into accessing malicious content.