Amazon Linux AMI update for kernel



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-20588
CWE-ID CWE-369
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

kernel
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Division by zero

EUVDB-ID: #VU79239

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-20588

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a divide by zero error that can return speculative data. A local user can gain access to potentially sensitive information.

Mitigation

Update the affected packages:

i686:
    kernel-4.14.322-170.538.amzn1.i686
    kernel-headers-4.14.322-170.538.amzn1.i686
    perf-4.14.322-170.538.amzn1.i686
    perf-debuginfo-4.14.322-170.538.amzn1.i686
    kernel-tools-4.14.322-170.538.amzn1.i686
    kernel-debuginfo-common-i686-4.14.322-170.538.amzn1.i686
    kernel-tools-devel-4.14.322-170.538.amzn1.i686
    kernel-debuginfo-4.14.322-170.538.amzn1.i686
    kernel-tools-debuginfo-4.14.322-170.538.amzn1.i686
    kernel-devel-4.14.322-170.538.amzn1.i686

src:
    kernel-4.14.322-170.538.amzn1.src

x86_64:
    kernel-debuginfo-common-x86_64-4.14.322-170.538.amzn1.x86_64
    kernel-tools-devel-4.14.322-170.538.amzn1.x86_64
    kernel-tools-debuginfo-4.14.322-170.538.amzn1.x86_64
    perf-4.14.322-170.538.amzn1.x86_64
    kernel-headers-4.14.322-170.538.amzn1.x86_64
    kernel-tools-4.14.322-170.538.amzn1.x86_64
    kernel-4.14.322-170.538.amzn1.x86_64
    kernel-debuginfo-4.14.322-170.538.amzn1.x86_64
    kernel-devel-4.14.322-170.538.amzn1.x86_64
    perf-debuginfo-4.14.322-170.538.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2023-1819.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.



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