ZDI-20-634: Advantech WebAccess/SCADA BwBacNetJ 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 BwBacNetJ 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-20-634?
The severity of ZDI-20-634 is critical due to the potential for remote code execution.
How do I fix ZDI-20-634?
To fix ZDI-20-634, update the Advantech WebAccess/SCADA software to the latest version provided by the vendor.
Who is affected by ZDI-20-634?
ZDI-20-634 affects installations of Advantech WebAccess/SCADA that use the BwBacNetJ driver.
Is authentication required to exploit ZDI-20-634?
No, authentication is not required to exploit ZDI-20-634, making it particularly dangerous.
What are the symptoms of ZDI-20-634 being exploited?
Symptoms of ZDI-20-634 exploitation may include unexpected system behavior, crashing, or unauthorized access to system controls.
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- alias/CVE-2020-12002
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