CyberSecBulletin
CVE-2022-26024NVD status: Modified

Intel(R) NUC HDMI Firmware Update Tool for…: Improper Preservation of Permissions

Published Updated By the CyberSecBulletin desk

CVE-2022-26024 is a high-severity improper preservation of permissions vulnerability in Intel(R) NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN and NUC7i7DN, with a CVSS 3.1 base score of 7.8 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 Intel(R) NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN and NUC7i7DN versions: before version 1.78.2.0.7. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.15% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Nuc7i3dnbe Firmware to 1.78.2.0.7 or a later version.
  2. Update Nuc7i3dnhe Firmware to 1.78.2.0.7 or a later version.
  3. Update Nuc7i3dnhnc Firmware to 1.78.2.0.7 or a later version.
  4. Read the advisory on intel.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
Intel(R) NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN and NUC7i7DNIntel(R) NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN and NUC7i7DNbefore version 1.78.2.0.7Not stated
IntelNuc7i3dnbe Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i3dnhe Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i3dnhnc Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i3dnke Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i3dnktc Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i5dnbe Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i5dnhe Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i5dnke Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i7dnbe Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i7dnhe Firmwarebefore 1.78.2.0.71.78.2.0.7
IntelNuc7i7dnke Firmwarebefore 1.78.2.0.71.78.2.0.7

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
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.16.7MediumCNA (intel.com)
CVSS 3.17.8HighNVD

Official description

Improper access control in the Intel(R) NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN and NUC7i7DN before version 1.78.2.0.7 may allow an authenticated 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: Improper Preservation of Permissions

The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.

More Improper Preservation of Permissions vulnerabilities (CWE-281)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Improper Preservation of Permissions vulnerabilities

Spotted an error? Tell us.