CPG BIOS: Missing Support for Integrity Check
CVE-2023-32475 is a high-severity missing support for integrity check vulnerability in CPG BIOS from Dell, with a CVSS 3.1 base score of 7.6 out of 10. It can be exploited with physical access to the device by an unauthenticated attacker, without any action from a user. The record lists versions 2.6.0, 1.13.0, 1.15.0 as the first without the flaw, so updating CPG BIOS to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.17% 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 CPG BIOS to 2.6.0 or 1.13.0 or 1.15.0 or 1.16.0, whichever matches your release line, or a later version.
- Update Vostro 5625 Firmware to 1.13.0 or a later version.
- Update Vostro 5515 Firmware to 1.19.0 or a later version.
- Read the advisory on dell.com for workarounds and exact fixed builds.
Affected products and versions
Version data comes from the organisation that assigned the CVE; 16 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- PhysicalThe attacker must physically touch the device.
- 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:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.6 | High | CNA (emc.com) |
| CVSS 3.1 | 7.6 | High | NVD |
Official description
Dell BIOS contains a missing support for integrity check vulnerability. An attacker with physical access to the system could potentially bypass security mechanisms to run arbitrary code on the system.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Missing Support for Integrity Check
The product uses a transmission protocol that does not include a mechanism for verifying the integrity of the data during transmission, such as a checksum.
How developers prevent this class of flaw
- Add an appropriately sized checksum to the protocol, ensuring that data received may be simply validated before it is parsed and used.
- Ensure that the checksums present in the protocol design are properly implemented and added to each message before it is sent.
More Missing Support for Integrity Check vulnerabilities (CWE-353)
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
Other vulnerabilities in CPG BIOS
- 8.2 High severity
- 8.2 High severity
- 8.2 High severity
- 7.8 High severity
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