Is CVE-2023-42667 in the CISA KEV catalog?

No. CVE-2023-42667 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-42667?

CVE-2023-42667 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-42667?

CVE-2023-42667 has an EPSS score of 0.24% (15th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-42667?

Upgrade intel-microcode on debian 11 to 3.20240813.1~deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-42667

HIGH

7.8

CVSS v3

NVD

Description

Improper isolation in the Intel(R) Core(TM) Ultra Processor stream cache mechanism may allow an authenticated user to potentially enable escalation of privilege via local access.

CWE-1189

How to fix

Remediation Available

intel-microcodeDebian

Fixed in:3.20240813.1~deb11u1CVE-2023-42667

Fixed in:3.20240813.1~deb12u1CVE-2023-42667

Fixed in:3.20240813.1CVE-2023-42667

intel-microcodeUbuntu

Fixed in:3.20240813.0ubuntu0.16.04.1+esm2USN-6967-1

Fixed in:3.20240813.0ubuntu0.18.04.1+esm2USN-6967-1

Fixed in:3.20240813.0ubuntu0.20.04.2USN-6967-1

Fixed in:3.20240813.0ubuntu0.22.04.2USN-6967-1

Fixed in:3.20240813.0ubuntu0.24.04.2USN-6967-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

0.24%probability of exploitation in 30 days

15thpercentile

Low risk: more likely to be exploited than 15% of all known CVEs.

References

Other references1

intel.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-08-14.