Life2000 Ventilation System: On-Chip Debug and Test Interface With Improper Access Control
CVE-2024-48970 is a critical-severity on-chip debug and test interface with improper access control vulnerability in Life2000 Ventilation System from Baxter, with a CVSS 3.1 base score of 9.3 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. Affected Life2000 Ventilation System versions: 06.08.00.00 and prior. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.21% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of Life2000 Ventilation System you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Baxter | Life2000 Ventilation System | 06.08.00.00 and prior | Not stated |
| Baxter | life2000_ventilator_firmware | 06.08.00.00 and earlier | 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
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- 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:N/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (baxter.com).
Official description
The ventilator's microcontroller lacks memory protection. An attacker could connect to the internal JTAG interface and read or write to flash memory using an off-the-shelf debugging tool, which could disrupt the function of the device and/or cause unauthorized information disclosure.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: On-Chip Debug and Test Interface With Improper Access Control
The chip does not implement or does not correctly perform access control to check whether users are authorized to access internal registers and test modes through the physical debug/test interface.
How developers prevent this class of flaw
- If feasible, the manufacturer should disable the JTAG interface or implement authentication and authorization for the JTAG interface. If authentication logic is added, it should be resistant to timing attacks. Security-sensitive data stored in registers, such as keys, etc. should be cleared when entering debug mode.
More On-Chip Debug and Test Interface With Improper Access Control vulnerabilities (CWE-1191)
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 Life2000 Ventilation System
- 9.3 Critical severity
- 9.3 Critical severity
- 9.3 Critical severity
- 10.0 Critical severity
- 10.0 Critical severity
- 9.3 Critical severity
Recent On-Chip Debug and Test Interface With Improper Access Control vulnerabilities
- 8.6 High severity
- 7.2 High severity
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