Hardcoded Key Vulnerability in Schneider Electric SoMachine Basic and Modicon Devices
CVE-2017-7574

9.8CRITICAL

Key Information:

Vendor

Schneider Electric
Status
Modicon Tm221ce16r Firmware
Vendor
CVE Published:
6 April 2017

What is CVE-2017-7574?

Schneider Electric's SoMachine Basic 1.4 SP1 and Modicon TM221CE16R 1.3.3.3 have a hardcoded key vulnerability affecting project protection. This flaw utilizes a hardcoded encryption key for AES-CBC, allowing unauthorized users to decrypt protected XML project files. Despite requiring a password to access these files, the predictable key enables attackers to extract user passwords from decrypted data. As a result, compromised users may have their projects altered or misused without consent.

References

http://download.schneider-electric.com/files?p_Doc_Ref=SE...
x_refsource_CONFIRM
https://os-s.net/advisories/OSS-2017-02.pdf
x_refsource_MISC
http://www.securityfocus.com/bid/97518
vdb-entryx_refsource_BID

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.