Intel(R) Processors: Out-of-bounds Read
CVE-2023-25756 is a high-severity out-of-bounds read vulnerability in Intel(R) Processors, with a CVSS 3.1 base score of 8.0 out of 10. It can be exploited from the same local network by an attacker with a low-privileged account, without any action from a user. Affected Intel(R) Processors versions: See references. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.4% 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 Intel(R) Processors you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on intel.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Intel(R) Processors | Intel(R) Processors | See references | Not stated |
| Intel | Atom X6200fe Firmware | Not specified in the record | Not stated |
| Intel | Atom X6211e Firmware | Not specified in the record | Not stated |
| Intel | Atom X6212re Firmware | Not specified in the record | Not stated |
| Intel | Atom X6413e Firmware | Not specified in the record | Not stated |
| Intel | Atom X6414re Firmware | Not specified in the record | Not stated |
| Intel | Atom X6425e Firmware | Not specified in the record | Not stated |
| Intel | Atom X6425re Firmware | Not specified in the record | Not stated |
| Intel | Atom X6427fe Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1000m Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1005m Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1007u Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1017u Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1019y Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1020e Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1020m Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1037u Firmware | Not specified in the record | Not stated |
| Intel | Celeron 1047ue Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2000e Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2002e Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2950m Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2955u Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2957u Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2961y Firmware | Not specified in the record | Not stated |
| Intel | Celeron 2970m Firmware | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE; 35 further products are omitted here. 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
- 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:A/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 | 4.6 | Medium | CNA (intel.com) |
| CVSS 3.1 | 8.0 | High | NVD |
Official description
Out-of-bounds read in the BIOS firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via adjacent access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
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 references
Other vulnerabilities in Intel(R) Processors
- 7.0 High severity
- 7.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
Recent Out-of-bounds Read vulnerabilities
- 7.8 High severity
Microsoft Windows Out-of-Bounds Read Exploited
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 8.1 High severity
- 7.8 High severity
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