Amazon Linux AMI update for microcode_ctl

1) Improper isolation or compartmentalization

EUVDB-ID: #VU96240

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49141

CWE-ID: CWE-653 - Improper isolation or compartmentalization

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an improper isolation in some Intel Processors stream cache mechanism. A local user can execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

i686:
    microcode_ctl-debuginfo-2.1-47.43.amzn1.i686
    microcode_ctl-2.1-47.43.amzn1.i686

src:
    microcode_ctl-2.1-47.43.amzn1.src

x86_64:
    microcode_ctl-debuginfo-2.1-47.43.amzn1.x86_64
    microcode_ctl-2.1-47.43.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

microcode_ctl: before 2.1-47.43

External links

http://alas.aws.amazon.com/ALAS-2024-1946.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.