CVE-2017-7574 Information

Description

Schneider Electric SoMachine Basic 1.4 SP1 and Schneider Electric Modicon TM221CE16R 1.3.3.3 devices have a hardcoded-key vulnerability. The Project Protection feature is used to prevent unauthorized users from opening an XML protected project file by prompting the user for a password. This XML file is AES-CBC encrypted; however the key used for encryption (SoMachineBasicSoMachineBasicSoMa) cannot be changed. After decrypting the XML file with this key the user password can be found in the decrypted data. After reading the user password the project can be opened and modified with the Schneider product.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-01 http://www.securityfocus.com/bid/97518 https://os-s.net/advisories/OSS-2017-02.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8