ZDI-20-958: 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-20-958?
The severity of ZDI-20-958 is considered high due to its potential for remote code execution.
How do I fix ZDI-20-958?
To fix ZDI-20-958, update Advantech WebAccess/HMI Designer to the latest version that addresses this vulnerability.
What type of attack is associated with ZDI-20-958?
ZDI-20-958 is associated with remote code execution attacks that require user interaction.
What software is affected by ZDI-20-958?
ZDI-20-958 affects the Advantech WebAccess/HMI Designer software.
Is user interaction required to exploit ZDI-20-958?
Yes, user interaction is required as the target must visit a malicious page or open a malicious file.