ZDI-20-624: Advantech WebAccess/SCADA OPCUA Stack-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 OPCUA device driver. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-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-20-624?
The severity of ZDI-20-624 is critical due to its ability to allow remote code execution without authentication.
How do I fix ZDI-20-624?
To fix ZDI-20-624, it is recommended to apply the latest security patches provided by Advantech for WebAccess/SCADA.
Which version of Advantech WebAccess/SCADA is affected by ZDI-20-624?
ZDI-20-624 affects specific installations of Advantech WebAccess/SCADA that utilize the OPCUA device driver.
Who can exploit ZDI-20-624?
ZDI-20-624 can be exploited by remote attackers without the need for authentication.
What does ZDI-20-624 allow attackers to do?
ZDI-20-624 allows attackers to execute arbitrary code on affected installations of Advantech WebAccess/SCADA.
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- alias/ZDI-20-624
- alias/ZDI-CAN-10338
- alias/CVE-2020-12002
- agent/software-canonical-lookup
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- canonical/advantech webaccess/scada