ZDI-CAN-9903: Advantech WebAccess/SCADA ViewSrv IOCTL 0x00002722 Out-Of-Bounds Read Information Disclosure Vulnerability
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of IOCTL 0x00002722 in ViewSrv.dll. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities 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-9903?
The severity of ZDI-CAN-9903 is considered critical due to its potential for remote information disclosure.
How do I fix ZDI-CAN-9903?
To mitigate ZDI-CAN-9903, update Advantech WebAccess/SCADA to the latest version provided by the vendor.
What type of information can be disclosed due to ZDI-CAN-9903?
ZDI-CAN-9903 allows attackers to disclose sensitive information stored on affected installations, potentially including operational data.
Does ZDI-CAN-9903 require authentication to exploit?
No, ZDI-CAN-9903 can be exploited without any authentication, making it particularly dangerous.
Which software is affected by ZDI-CAN-9903?
ZDI-CAN-9903 specifically affects Advantech WebAccess/SCADA installations.
- agent/references
- agent/softwarecombine
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-20-628
- alias/ZDI-CAN-9903
- alias/CVE-2020-12018
- agent/software-canonical-lookup
- agent/severity
- agent/title
- agent/type
- agent/description
- agent/event
- agent/tags
- agent/source
- vendor/advantech
- canonical/advantech webaccess/scada