CVE-2023-38575: Medium severity ubuntu/intel-microcode vulnerability

Published Mar 12, 2024
·
Updated

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure 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·01:50 PM
DescriptionSeverityAffected Software
Oct 18, 2024
News Published
via BleepingComputer·02:48 PM

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2023-38575?

CVE-2023-38575 is classified as a medium severity vulnerability due to the potential information disclosure through non-transparent sharing of return predictor targets.

2

How do I fix CVE-2023-38575?

To remediate CVE-2023-38575, update the intel-microcode package to the latest versions specific to your Ubuntu or Debian distribution.

3

Who is affected by CVE-2023-38575?

CVE-2023-38575 affects certain Intel processors along with specific versions of the intel-microcode package on various Linux distributions.

4

What are the potential consequences of CVE-2023-38575?

The primary consequence of CVE-2023-38575 is the risk of information leakage which could be exploited by an authorized user with local access.

5

Is CVE-2023-38575 a hardware or software vulnerability?

CVE-2023-38575 is a vulnerability that manifests in the software interfacing with Intel hardware, specifically related to microcode behavior.

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