RTU500 series CMU firmware: Improperly Implemented Security Check for Standard
CVE-2024-2617 is a high-severity improperly implemented security check for standard vulnerability in RTU500 series CMU firmware from Hitachi Energy, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. Affected RTU500 series CMU firmware versions: 13.2.1 through 13.2.7; 13.4.1 through 13.4.4; 13.5.1 through 13.5.3. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.67% chance of exploitation within 30 days, higher than 52% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of RTU500 series CMU firmware you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Hitachi Energy | RTU500 series CMU firmware | 13.2.1 through 13.2.7; 13.4.1 through 13.4.4; 13.5.1 through 13.5.3 | Not stated |
| Hitachienergy | rtu500_firmware | 13.2.1.0 through 13.2.7.0; 13.4.1.0 through 13.4.4.0; 13.5.1.0 through 13.5.3.0 | Not stated |
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
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- 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:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (hitachienergy.com).
Official description
A vulnerability exists in the RTU500 that allows for authenticated and authorized users to bypass secure update, if secure update feature was not enabled on all CMUs of a RTU500. If a malicious actor successfully exploits this vulnerability, they could use it to update the RTU500 with unsigned firmware.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improperly Implemented Security Check for Standard
The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.
More Improperly Implemented Security Check for Standard vulnerabilities (CWE-358)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in RTU500 series CMU firmware
- 9.1 Critical severity
- 9.1 Critical severity
- 7.5 High severity
- 8.2 High severity
- 7.5 High severity
- 7.5 High severity
Recent Improperly Implemented Security Check for Standard vulnerabilities
- 8.1 High severity
- 9.8 Critical severity
- 9.1 Critical severity
- 7.5 High severity
- 8.8 High severity
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