A vulnerability was found in Schneider Electric EcoStruxure Operator Terminal Expert up to 3.1 SP1 (SCADA Software). It has been declared as critical. Affected by this vulnerability is an unknown code block. The manipulation as part of a Project File leads to a argument injection vulnerability. The CWE definition for the vulnerability is CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A CWE-88: Argument Injection or Modification vulnerability exists in EcoStruxure Operator Terminal Expert 3.1 Service Pack 1 and prior (formerly known as Vijeo XD)which could cause unauthorized write access when opening the project file.

The weakness was published 06/16/2020 (Website). The advisory is shared at se.com. This vulnerability is known as CVE-2020-7496 since 01/21/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at 156803, 156804, 156806 and 156802.

Productinfo

Type

• SCADA Software

Vendor

• Schneider Electric

Name

• EcoStruxure Operator Terminal Expert

Version

• 3.1 SP1

License

• commercial

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