QID 355120

Date Published: 2023-05-29

QID 355120: Amazon Linux Security Advisory for microcode_ctl : ALAS2023-2023-055

Sensitive information accessible by physical probing of jtag interface for some intel(r) processors with sgx may allow an unprivileged user to potentially enable information disclosure via physical access. (
( CVE-2022-0005) a flaw was found in hw.
Improper access control for some intel(r) xeon(r) processors may potentially allow an authenticated user to enable information disclosure via local access. (
( CVE-2022-21131) a flaw was found in hw.
Improper input validation for some intel(r) xeon(r) processors may allow a privileged user to enable a denial of service via local access. (
( CVE-2022-21136) a flaw was found in hw.
Processor optimization removal or modification of security-critical code for some intel(r) processors may potentially allow an authenticated user to enable information disclosure via local access. (
( CVE-2022-21151) a flaw was found in hw.
The apic can operate in xapic mode (also known as a legacy mode), in which apic configuration registers are exposed through a memory-mapped i/o (mmio) page.
This flaw allows an attacker who can execute code on a target cpu to query the apic configuration page.
When reading the apic configuration page with an unaligned read from the mmio page, the registers may return stale data from previous requests made by the same processor core to the same configuration page, leading to unauthorized access. (
( CVE-2022-21233)



Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Medium - 5.5 severity.
  • CVSS V2 rated as Medium - 4.9 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2023-055 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355120

    CVE-2022-21233 | CVE-2022-21136 | CVE-2022-21131 | CVE-2022-21151 | CVE-2022-0005 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2023-055 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2023-055.html
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