mbNET.mini: Inadequate Encryption Strength
CVE-2024-45273 is a high-severity inadequate encryption strength vulnerability in mbNET.mini from MB connect line, 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 attacker with a low-privileged account, without any action from a user. Affected mbNET.mini versions: 2.2.13 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.09% 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 Mbnet.mini Firmware to 2.3.1 or a later version.
- Update Myrex24 V2 Virtual Server to 2.16.3 or a later version.
- Update Rex 200 Firmware to 8.2.1 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| MB connect line | mbNET.mini | 2.2.13 and earlier | Not stated |
| MB connect line | mbNET/mbNET.rokey | 8.2.0 and earlier | Not stated |
| MB connect line | mbNET HW1 | 5.1.11 and earlier | Not stated |
| MB connect line | mbSPIDER | 2.6.5 and earlier | Not stated |
| MB connect line | mbCONNECT24 | 2.16.2 and earlier | Not stated |
| MB connect line | mymbCONNECT24 | 2.16.2 and earlier | Not stated |
| Helmholz | REX100 | <= 2.2.13 and earlier; 2.2.13 and earlier | Not stated |
| Helmholz | REX200/250 | <= 8.2.0 and earlier | Not stated |
| Helmholz | myREX24 V2 | <= 2.16.2 and earlier; 2.16.2 and earlier | Not stated |
| Helmholz | myREX24.virtual | <= 2.16.2 and earlier; 2.16.2 and earlier | Not stated |
| Helmholz | REX300 | <= 5.1.11 and earlier; 5.1.11 and earlier | Not stated |
| Mbconnectline | mbnet_mbnet.rokey | 8.2.0 and earlier | Not stated |
| Mbconnectline | mbnet_hw1 | 5.1.11 and earlier | Not stated |
| Mbconnectline | mbspider | 2.6.5 and earlier | Not stated |
| Mbconnectline | mbconnect24 | 2.16.2 and earlier | Not stated |
| Mbconnectline | mymbconnect24 | 2.16.2 and earlier | Not stated |
| Helmholz | rex_200 | 8.2.0 and earlier | Not stated |
| Helmholz | rex250 | 8.2.0 and earlier | Not stated |
| Mbconnectline | Mbnet.mini Firmware | before 2.3.1 | 2.3.1 |
| Helmholz | Myrex24 V2 Virtual Server | before 2.16.3 | 2.16.3 |
| Helmholz | Rex 300 Firmware | 5.1.11 and earlier | Not stated |
| Helmholz | Rex 200 Firmware | before 8.2.1 | 8.2.1 |
| Helmholz | Rex 250 Firmware | before 8.2.1 | 8.2.1 |
| Helmholz | Rex 100 Firmware | before 2.3.1 | 2.3.1 |
| Mbconnectline | Mbspider Mdh 905 Firmware | 2.6.5 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE; 6 further products are omitted here. 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
- 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
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.4 | High | CNA (cert.vde.com) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
An unauthenticated local attacker can decrypt the devices config file and therefore compromise the device due to a weak implementation of the encryption used.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Inadequate Encryption Strength
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
How developers prevent this class of flaw
- Use an encryption scheme that is currently considered to be strong by experts in the field.
More Inadequate Encryption Strength vulnerabilities (CWE-326)
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
Third-party and government advisories
- cert.vde.com/en/advisories/VDE-2024-056Third Party Advisory
- cert.vde.com/en/advisories/VDE-2024-066Third Party Advisory
- cert.vde.com/en/advisories/VDE-2024-068Third Party Advisory
- cert.vde.com/en/advisories/VDE-2024-069Third Party Advisory
Other vulnerabilities in mbNET.mini
- 7.2 High severity
- 8.4 High severity
- 7.5 High severity
- 7.2 High severity
- 7.2 High severity
- 7.2 High severity
Recent Inadequate Encryption Strength vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
- 7.5 High severity
- 7.5 High severity
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