ZDI-20-950: 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-20-950?
The severity of ZDI-20-950 is considered critical due to its ability to allow remote code execution.
How do I fix ZDI-20-950?
To fix ZDI-20-950, update to the latest version of Advantech WebAccess/HMI Designer provided by the vendor.
What type of attack is ZDI-20-950 associated with?
ZDI-20-950 is associated with remote code execution attacks that require user interaction.
Which software is affected by ZDI-20-950?
ZDI-20-950 affects Advantech WebAccess/HMI Designer installations.
What are the requirements for exploiting ZDI-20-950?
Exploiting ZDI-20-950 requires the user to visit a malicious page or open a malicious file.