Amazon Linux AMI update for kernel

Published: 2023-05-04

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-2124 CVE-2023-23454
CWE-ID	CWE-125 CWE-843
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 information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU75323

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-2124

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack..

The vulnerability exists due to a boundary condition within the XFS subsystem in Linux kernel. A local user can trigger an out-of-bounds read error and crash the kernel.

Mitigation

Update the affected packages:

i686:
    kernel-debuginfo-common-i686-4.14.313-162.533.amzn1.i686
    kernel-tools-debuginfo-4.14.313-162.533.amzn1.i686
    kernel-devel-4.14.313-162.533.amzn1.i686
    perf-debuginfo-4.14.313-162.533.amzn1.i686
    kernel-headers-4.14.313-162.533.amzn1.i686
    perf-4.14.313-162.533.amzn1.i686
    kernel-4.14.313-162.533.amzn1.i686
    kernel-tools-4.14.313-162.533.amzn1.i686
    kernel-debuginfo-4.14.313-162.533.amzn1.i686
    kernel-tools-devel-4.14.313-162.533.amzn1.i686

src:
    kernel-4.14.313-162.533.amzn1.src

x86_64:
    kernel-tools-debuginfo-4.14.313-162.533.amzn1.x86_64
    kernel-4.14.313-162.533.amzn1.x86_64
    kernel-tools-devel-4.14.313-162.533.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.313-162.533.amzn1.x86_64
    perf-4.14.313-162.533.amzn1.x86_64
    kernel-headers-4.14.313-162.533.amzn1.x86_64
    kernel-debuginfo-4.14.313-162.533.amzn1.x86_64
    kernel-tools-4.14.313-162.533.amzn1.x86_64
    kernel-devel-4.14.313-162.533.amzn1.x86_64
    perf-debuginfo-4.14.313-162.533.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: All versions

CPE2.3

External links

https://alas.aws.amazon.com/ALAS-2023-1735.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.

2) Type Confusion

EUVDB-ID: #VU71478