QID 354061

Date Published: 2022-09-15

QID 354061: Amazon Linux Security Advisory for microcode_ctl : ALAS2-2022-1842

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)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

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 - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2022-1842 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354061

    CVE-2022-21233 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2022-1842 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2022-1842.html
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