ZDI-CAN-9889: Advantech WebAccess/SCADA BwWebSvc IOCTL 0x00013c77 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 processing of IOCTL 0x00013c77 in BwWebSvc.dll. The issue results from the lack of proper validation of user-supplied data, which can trigger an overflow of a fixed-length 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-CAN-9889?
ZDI-CAN-9889 has a critical severity rating due to the ability for remote attackers to execute arbitrary code.
How do I fix ZDI-CAN-9889?
To remediate ZDI-CAN-9889, update the affected version of Advantech WebAccess/SCADA to the latest available patch released by the vendor.
What products are affected by ZDI-CAN-9889?
ZDI-CAN-9889 impacts Advantech WebAccess/SCADA installations.
Is authentication required to exploit ZDI-CAN-9889?
No, authentication is not required to exploit the ZDI-CAN-9889 vulnerability.
What is the specific flaw in ZDI-CAN-9889?
The specific flaw in ZDI-CAN-9889 exists within the processing of IOCTL 0x00013c77 in the BwWebSvc.dll file.
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- alias/CVE-2020-10638
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