CVE-2023-22655: Medium severity ubuntu/intel-microcode vulnerability

Published Mar 12, 2024
·
Updated

Protection mechanism failure in some 3rd and 4th Generation Intel(R) Xeon(R) Processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.

Affected Software

6 affected componentsFixes available
ubuntu/intel-microcode<3.20240514.0ubuntu0.18.04.1+
3.20240514.0ubuntu0.18.04.1+
ubuntu/intel-microcode<3.20240514.0ubuntu0.20.04.1
3.20240514.0ubuntu0.20.04.1
ubuntu/intel-microcode<3.20240514.0ubuntu0.22.04.1
3.20240514.0ubuntu0.22.04.1
ubuntu/intel-microcode<3.20240514.0ubuntu0.23.10.1
3.20240514.0ubuntu0.23.10.1
ubuntu/intel-microcode<3.20240514.0ubuntu0.16.04.1+
3.20240514.0ubuntu0.16.04.1+
debian/intel-microcode<=3.20231114.1~deb11u1, <=3.20231114.1~deb12u1
3.20240514.1~deb11u13.20240514.1~deb12u13.20240813.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/intel-microcode to a version that resolves this vulnerability.

    Fixed in 3.20240514.0ubuntu0.18.04.1+
  2. Upgrade

    Upgrade ubuntu/intel-microcode to a version that resolves this vulnerability.

    Fixed in 3.20240514.0ubuntu0.20.04.1
  3. Upgrade

    Upgrade ubuntu/intel-microcode to a version that resolves this vulnerability.

    Fixed in 3.20240514.0ubuntu0.22.04.1
  4. Upgrade

    Upgrade ubuntu/intel-microcode to a version that resolves this vulnerability.

    Fixed in 3.20240514.0ubuntu0.23.10.1
  5. Upgrade

    Upgrade ubuntu/intel-microcode to a version that resolves this vulnerability.

    Fixed in 3.20240514.0ubuntu0.16.04.1+
  6. Upgrade

    Upgrade debian/intel-microcode to a version that resolves this vulnerability.

    Fixed in 3.20240514.1~deb11u1Fixed in 3.20240514.1~deb12u1Fixed in 3.20240813.2

Event History

Mar 12, 2024
CVE Published
via Ubuntu·12:00 AM
Mar 14, 2024
CVE Published
via MITRE·04:45 PM
Data Sourced
via MITRE·04:45 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeakness
Mar 21, 2024
Data Sourced
via Red Hat·01:45 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2023-22655?

CVE-2023-22655 has a high severity level due to its potential to allow escalation of privilege for privileged users.

2

How do I fix CVE-2023-22655?

To mitigate CVE-2023-22655, update to the latest versions of the intel-microcode package available for your specific Ubuntu or Debian release.

3

What platforms are affected by CVE-2023-22655?

CVE-2023-22655 affects 3rd and 4th Generation Intel Xeon Processors utilizing Intel SGX or Intel TDX technologies.

4

Can local access escalate privileges due to CVE-2023-22655?

Yes, CVE-2023-22655 allows a privileged user with local access to potentially escalate their privileges.

5

Which versions of intel-microcode are safe from CVE-2023-22655?

Versions of intel-microcode that are updated to at least 3.20240514.*, based on your OS version, are considered safe from CVE-2023-22655.

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