CVE-2017-7574
Schneider Electric SoMachine Basic 1.4 SP1 and Schneider Electric Modicon TM221CE16R 1.3.3.3 devices have a hardcoded-key vulnerability.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.25% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-798, CWE-321
- Affected
- schneider-electric/modicon tm221ce16r firmware · schneider-electric/somachine
- Source
- cve@mitre.org
References
- http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-01Vendor Advisory
- http://www.securityfocus.com/bid/97518Third Party Advisory, VDB 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 Advisory, VDB Entry
- https://os-s.net/advisories/OSS-2017-02.pdfBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.