Advantech WebAccess
Successful exploitation of these vulnerabilities could allow an attacker to gain remote code execution.
describes (2)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-38389US | critical9.8 | — | ||
Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code. | ||||
| CVE-2021-33023US | critical9.8 | — | ||
Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code. | ||||
references
External citations — patches, advisories, analysis.
remediations (4)
- MitigationWebAccess
If you have forgotten the remote access code using during software installation on the OPC Server node, you have two options:
- MitigationWebAccess
If you have forgotten the remote access code using during software installation on the OPC Server node, you have two options:
- FixedWebAccess
In order to address the heap-based buffer overflow vulnerability, Advantech recommends users directly add the remote access code to avoid being attacked by unknown requests. This is the remote access code established during installation of the Advantech WebAccess SCADA software (SCADA node, project node, or OPC Service) on the OPC Server computer. The access code you enter here must match the remote access code established during installation on the OPC Server. This prevents unauthorized users from accessing the OPC Server data using the Advantech WebAccess SCADA OPC Service.
- FixedWebAccess
In order to address the heap-based buffer overflow vulnerability, Advantech recommends users directly add the remote access code to avoid being attacked by unknown requests. This is the remote access code established during installation of the Advantech WebAccess SCADA software (SCADA node, project node, or OPC Service) on the OPC Server computer. The access code you enter here must match the remote access code established during installation on the OPC Server. This prevents unauthorized users from accessing the OPC Server data using the Advantech WebAccess SCADA OPC Service.
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