Amazon Linux AMI update for kernel

Published: 2023-03-23

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-3643 CVE-2023-0394
CWE-ID	CWE-20 CWE-476
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	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) Input validation error

EUVDB-ID: #VU70468

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3643

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of network packets. An attacker with access to the guest OS can trigger the related physical NIC on the host to reset, abort, or crash by sending certain kinds of packets.

Mitigation

Update the affected packages:

i686:
    kernel-devel-4.14.305-155.531.amzn1.i686
    kernel-debuginfo-4.14.305-155.531.amzn1.i686
    perf-4.14.305-155.531.amzn1.i686
    kernel-headers-4.14.305-155.531.amzn1.i686
    kernel-tools-debuginfo-4.14.305-155.531.amzn1.i686
    kernel-debuginfo-common-i686-4.14.305-155.531.amzn1.i686
    kernel-4.14.305-155.531.amzn1.i686
    kernel-tools-devel-4.14.305-155.531.amzn1.i686
    perf-debuginfo-4.14.305-155.531.amzn1.i686
    kernel-tools-4.14.305-155.531.amzn1.i686

src:
    kernel-4.14.305-155.531.amzn1.src

x86_64:
    kernel-tools-devel-4.14.305-155.531.amzn1.x86_64
    perf-debuginfo-4.14.305-155.531.amzn1.x86_64
    perf-4.14.305-155.531.amzn1.x86_64
    kernel-debuginfo-4.14.305-155.531.amzn1.x86_64
    kernel-tools-4.14.305-155.531.amzn1.x86_64
    kernel-tools-debuginfo-4.14.305-155.531.amzn1.x86_64
    kernel-headers-4.14.305-155.531.amzn1.x86_64
    kernel-4.14.305-155.531.amzn1.x86_64
    kernel-devel-4.14.305-155.531.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.305-155.531.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.305-155.531

External links

http://alas.aws.amazon.com/ALAS-2023-1706.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

2) NULL pointer dereference

EUVDB-ID: #VU71352

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0394

CWE-ID: CWE-476 - NULL Pointer Dereference