Yokogawa CENTUM cleartext storage

Summaryinfo

A vulnerability has been found in Yokogawa CENTUM and classified as problematic. The affected element is an unknown function. The manipulation leads to cleartext storage. This vulnerability is listed as CVE-2023-26593. There is no available exploit.

Detailsinfo

A vulnerability was found in Yokogawa CENTUM (the affected version unknown) and classified as problematic. This issue affects an unknown part. The manipulation with an unknown input leads to a cleartext storage vulnerability. Using CWE to declare the problem leads to CWE-312. The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. Impacted is confidentiality. The summary by CVE is:

CENTUM series provided by Yokogawa Electric Corporation are vulnerable to cleartext storage of sensitive information. If an attacker who can login or access the computer where the affected product is installed tampers the password file stored in the computer, the user privilege which CENTUM managed may be escalated. As a result, the control system may be operated with the escalated user privilege. To exploit this vulnerability, the following prerequisites must be met: (1)An attacker has obtained user credentials where the affected product is installed, (2)CENTUM Authentication Mode is used for user authentication when CENTUM VP is used. The affected products and versions are as follows: CENTUM CS 1000, CENTUM CS 3000 (Including CENTUM CS 3000 Entry Class) R2.01.00 to R3.09.50, CENTUM VP (Including CENTUM VP Entry Class) R4.01.00 to R4.03.00, R5.01.00 to R5.04.20, and R6.01.00 and later, B/M9000 CS R5.04.01 to R5.05.01, and B/M9000 VP R6.01.01 to R7.04.51 and R8.01.01 and later

The weakness was presented 04/11/2023. The advisory is shared at yokogawa.com. The identification of this vulnerability is CVE-2023-26593 since 03/15/2023. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1555 for this issue.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-30388). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Yokogawa

Name

• CENTUM

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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