CENTUM CS 3000: Uncontrolled Search Path Element
CVE-2022-23401 is a high-severity uncontrolled search path element vulnerability in CENTUM CS 3000 from Yokogawa Electric, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. Affected CENTUM CS 3000 versions: versions from R3.08.10 to R3.09.00. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Centum Vp Firmware to r6.09.00 or a later version.
- Update Centum Vp Entry Firmware to r6.09.00 or a later version.
- Read the advisory on web-material3.yokogawa.com for workarounds and exact fixed builds.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Yokogawa Electric | CENTUM CS 3000 | versions from R3.08.10 to R3.09.00 | Not stated |
| Yokogawa Electric | CENTUM VP | versions from R4.01.00 to R4.03.00; versions from R5.01.00 to R5.04.20; versions from R6.01.00 to R6.08.00 | Not stated |
| Yokogawa Electric | Exaopc | versions from R3.72.00 to R3.79.00 | Not stated |
| Yokogawa | Centum Cs 3000 Firmware | r3.08.10 through r3.09.00 | Not stated |
| Yokogawa | Centum Cs 3000 Entry Firmware | r3.08.10 through r3.09.00 | Not stated |
| Yokogawa | Centum Vp Firmware | r4.01.00 through r4.03.00; r5.01.00 through r5.04.20; r6.01.00 up to, but not including, r6.09.00 | r6.09.00 |
| Yokogawa | Centum Vp Entry Firmware | r4.01.00 through r4.03.00; r5.01.00 through r5.04.20; r6.01.00 up to, but not including, r6.09.00 | r6.09.00 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 2.0 | 3.7 | Low | NVD |
Official description
The following Yokogawa Electric products contain insecure DLL loading issues. CENTUM CS 3000 versions from R3.08.10 to R3.09.00, CENTUM VP versions from R4.01.00 to R4.03.00, from R5.01.00 to R5.04.20, and from R6.01.00 to R6.08.00, Exaopc versions from R3.72.00 to R3.79.00.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Uncontrolled Search Path Element
The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.
How developers prevent this class of flaw
- Hard-code the search path to a set of known-safe values (such as system directories), or only allow them to be specified by the administrator in a configuration file. Do not allow these settings to be modified by an external party. Be careful to avoid related weaknesses such as CWE-426 and CWE-428.
- When invoking other programs, specify those programs using fully-qualified pathnames. While this is an effective approach, code that uses fully-qualified pathnames might not be portable to other systems that do not use the same pathnames. The portability can be improved by locating the full-qualified paths in a centralized, easily-modifiable location within the source code, and having the code refer to these paths.
- Remove or restrict all environment settings before invoking other programs. This includes the PATH environment variable, LD_LIBRARY_PATH, and other settings that identify the location of code libraries, and any application-specific search paths.
More Uncontrolled Search Path Element vulnerabilities (CWE-427)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in CENTUM CS 3000
- 8.5 High severity
- 8.8 High severity
- 8.1 High severity
- 7.8 High severity
- 8.1 High severity
- 7.8 High severity
Recent Uncontrolled Search Path Element vulnerabilities
- 7.8 High severity
- 7.0 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
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