CVE-2017-7574 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Schneider-Electric	Modicon Tm221Ce16R Firmware	1.3.3.3
Schneider-Electric	Modicon Tm221Ce16R	-
Schneider-Electric	Somachine	1.4

Related Weaknesses (CWE)

CWE-798

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-01Vendor Advisory
http://www.securityfocus.com/bid/97518Third Party AdvisoryVDB Entry
https://os-s.net/advisories/OSS-2017-02.pdfBroken Link
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-01Vendor Advisory
http://www.securityfocus.com/bid/97518Third Party AdvisoryVDB Entry
https://os-s.net/advisories/OSS-2017-02.pdfBroken Link

FAQ

What is CVE-2017-7574?

CVE-2017-7574 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...

How severe is CVE-2017-7574?

CVE-2017-7574 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2017-7574?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Modicon Tm221Ce16R Firmware, Schneider-Electric Modicon Tm221Ce16R, Schneider-Electric Somachine.