BIS: Incomplete Documentation of Program Execution
CVE-2023-29241 is a high-severity incomplete documentation of program execution vulnerability in BIS from Bosch, with a CVSS 3.1 base score of 7.1 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 BIS versions: 5.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.36% 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 BIS you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on psirt.bosch.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Bosch | BIS | 5.0 | Not stated |
| Bosch | Building Integration System | 5.0 | 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
- 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
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.1 | High | CNA (bosch.com) |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
Improper Information in Cybersecurity Guidebook in Bosch Building Integration System (BIS) 5.0 may lead to wrong configuration which allows local users to access data via network
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Incomplete Documentation of Program Execution
The document does not fully define all mechanisms that are used to control or influence how product-specific programs are executed, such as environmental variables, configuration files, registry keys, command-line switches or options, or system settings.
More Incomplete Documentation of Program Execution vulnerabilities (CWE-1112)
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
Advisories
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