UEFI firmware for some Intel(R) reference…: Untrusted Pointer Dereference
CVE-2023-42772 is a high-severity untrusted pointer dereference vulnerability in UEFI firmware for some Intel(R) reference processors, with a CVSS 3.1 base score of 8.2 out of 10. It can be exploited with local access to the system by an attacker with administrator privileges, without any action from a user. Affected UEFI firmware for some Intel(R) reference 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 0.17% 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
- Check which version of UEFI firmware for some Intel(R) reference processors you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| UEFI firmware for some Intel(R) reference processors | UEFI firmware for some Intel(R) reference processors | See references | Not stated |
| Intel | xeon_d-2799_firmware | all versions | 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
- HighAdministrator-level access is required first.
- 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:H/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (intel.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.7 | High | CNA (intel.com) |
| CVSS 3.1 | 8.2 | High | CNA (intel.com) |
Official description
Untrusted pointer dereference in UEFI firmware for some Intel(R) reference processors may allow a privileged user to potentially enable escalation of privilege via local access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Untrusted Pointer Dereference
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
More Untrusted Pointer Dereference vulnerabilities (CWE-822)
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
Recent Untrusted Pointer Dereference vulnerabilities
- 8.4 High severity
- 7.8 High severity
- 7.8 High severity
- 7.4 High severity
- 7.4 High severity
- 7.8 High severity
Spotted an error? Tell us.