A vulnerability, which was classified as very critical, was found in Advantech WebAccess and NMS up to 3.0.1 (SCADA Software). Affected is some unknown processing of the component File Upload. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Multiple issues exist that allow files to be uploaded and executed on the WebAccess/NMS (versions prior to 3.0.2).

The weakness was disclosed 04/09/2020. This vulnerability is traded as CVE-2020-10621 since 03/16/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/10/2020). The MITRE ATT&CK project declares the attack technique as T1608.002.

Upgrading to version 3.0.2 eliminates this vulnerability.

The entries VDB-153016, VDB-153015, VDB-153014 and VDB-153013 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• SCADA Software

Vendor

• Advantech

Name

• NMS
• WebAccess

Version

• 3.0.0
• 3.0.1

License

• commercial

CPE 2.3info

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CPE 2.2info

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