ZDI-20-603: Advantech WebAccess/SCADA DrawSrv IOCTL 0x00002723 Heap-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of IOCTL 0x00002723 in DrawSrv.dll. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Advantech WebAccess/SCADA |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-20-603?
ZDI-20-603 has been classified as a critical vulnerability due to the potential for remote code execution.
How do I fix ZDI-20-603?
To mitigate ZDI-20-603, ensure that you update Advantech WebAccess/SCADA to the latest patched version provided by the vendor.
What systems are affected by ZDI-20-603?
ZDI-20-603 impacts installations of Advantech WebAccess/SCADA that have not implemented the necessary safeguards.
Can ZDI-20-603 be exploited without authentication?
Yes, ZDI-20-603 can be exploited by remote attackers without the need for authentication.
What type of flaw is present in ZDI-20-603?
The flaw in ZDI-20-603 is related to the implementation of IOCTL 0x00002723 in DrawSrv.dll, allowing arbitrary code execution.
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