NetGuardian DIN Remote Telemetry Unit (RTU): Improper Access Control
CVE-2024-4225 is a high-severity improper access control vulnerability in NetGuardian DIN Remote Telemetry Unit (RTU) from DPS Telecom, with a CVSS 3.1 base score of 7.6 out of 10. It can be exploited from the same local network by an attacker with a low-privileged account, without any action from a user. Affected NetGuardian DIN Remote Telemetry Unit (RTU) versions: NGDIN_ST App v2.0D.0062. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.25% 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
- Check which version of NetGuardian DIN Remote Telemetry Unit (RTU) you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on govtech-csg.github.io for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| DPS Telecom | NetGuardian DIN Remote Telemetry Unit (RTU) | NGDIN_ST App v2.0D.0062 | Not stated |
| Dpstele | ngdin_st | 2.0d.0062 | 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
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- 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
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L. Scored by CNA (tech.gov.sg).
Official description
Multiple security vulnerabilities has been discovered in web interface of NetGuardian DIN Remote Telemetry Unit (RTU), by DPS Telecom. Attackers can exploit those security vulnerabilities to perform critical actions such as escalate user's privilege, steal user's credential, Cross Site Scripting (XSS) and Cross-Site Request Forgery (CSRF).
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How developers prevent this class of flaw
- Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
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
Recent Improper Access Control vulnerabilities
- 9.8 Critical severity
- 7.8 High severity
- 8.6 High severity
- 9.8 Critical severity
- 8.2 High severity
- 7.5 High severity
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