2.4! Display 55, SD/U12.55.11-825: Exposure of Sensitive System Information to an Unauthorized Control Sphere
CVE-2024-4008 is a high-severity exposure of sensitive system information to an unauthorized control sphere vulnerability in 2.4! Display 55, SD/U12.55.11-825 from ABB, Busch-Jaeger, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected 2.4! Display 55, SD/U12.55.11-825 versions: 1.00. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.27% 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 2tma310010b0001 Firmware to 1.02 or a later version.
- Update 2tma310011b0001 Firmware to 1.02 or a later version.
- Update 2tma310011b0002 Firmware to 1.02 or a later version.
- Read the advisory on search.abb.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| ABB, Busch-Jaeger | 2.4! Display 55, SD/U12.55.11-825 | 1.00 | Not stated |
| ABB, Busch-Jaeger | 2.4! Display 55, SD/SD/U12.55.1-825 | 1.00 | Not stated |
| ABB, Busch-Jaeger | 2.4! Display 63, SD/U12.63.11-825 | 1.00 | Not stated |
| ABB, Busch-Jaeger | RoomTouch 4", RT/U12.86.1-825 | 1.00 | Not stated |
| ABB, Busch-Jaeger | RoomTouch 4", RT/U12.86.11-825 | 1.00 | Not stated |
| ABB, Busch-Jaeger | 2,4'' Display 70, SD/U12.70.11-4015 | 1.00 | Not stated |
| ABB, Busch-Jaeger | 2,4'' Display 70, SD-U12-70-1-4015 | 1.00 | Not stated |
| ABB, Busch-Jaeger | RoomTouch 4", RT/U12.86.11-811 | 1.00 | Not stated |
| ABB, Busch-Jaeger | RoomTouch 4", RT-U12-86-1-811 | 1.00 | Not stated |
| ABB, Busch-Jaeger | BCU KNX, BA-U1.0.11 | 1.3.0.33 | Not stated |
| ABB, Busch-Jaeger | BCU KNX, BA-U1.0.1 | 1.3.0.33 | Not stated |
| ABB, Busch-Jaeger | BCU KNX, BA-U1.0.21 | 1.3.0.33 | Not stated |
| ABB | 2tma310010b0001 Firmware | before 1.02 | 1.02 |
| ABB | 2tma310011b0001 Firmware | before 1.02 | 1.02 |
| ABB | 2tma310011b0002 Firmware | before 1.02 | 1.02 |
| ABB | 2tma310010b0003 Firmware | before 1.02 | 1.02 |
| ABB | 2tma310011b0003 Firmware | before 1.02 | 1.02 |
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
- NoneNo account or login is needed.
- 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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 7.3 | High | CNA (ch.abb.com) |
| CVSS 3.1 | 9.6 | Critical | CNA (ch.abb.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
FDSK Leak in ABB, Busch-Jaeger, FTS Display (version 1.00) and BCU (version 1.3.0.33) allows attacker to take control via access to local KNX Bus-System
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposure of Sensitive System Information to an Unauthorized Control Sphere
The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.
How developers prevent this class of flaw
- Production applications should never use methods that generate internal details such as stack traces and error messages unless that information is directly committed to a log that is not viewable by the end user. All error message text should be HTML entity encoded before being written to the log file to protect against potential cross-site scripting attacks against the viewer of the logs
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in 2.4! Display 55, SD/U12.55.11-825
- 7.8 High severity
Recent Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
- 5.5 Medium severity
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