Amazon Linux AMI update for kernel

Published: 2022-04-08 | Updated: 2023-09-08

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-1015 CVE-2022-1016
CWE-ID	CWE-787 CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU62027

Risk: Low

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

CVE-ID: CVE-2022-1015

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error within the nft_validate_register_store and nft_validate_register_load in linux/net/netfilter/nf_tables_api.c of the netfilter subsystem. A local user can escalate privileges on the system.

Mitigation

Update the affected packages:

i686:
    kernel-tools-4.14.273-140.502.amzn1.i686
    kernel-debuginfo-4.14.273-140.502.amzn1.i686
    kernel-tools-debuginfo-4.14.273-140.502.amzn1.i686
    kernel-4.14.273-140.502.amzn1.i686
    kernel-devel-4.14.273-140.502.amzn1.i686
    kernel-headers-4.14.273-140.502.amzn1.i686
    kernel-debuginfo-common-i686-4.14.273-140.502.amzn1.i686
    perf-debuginfo-4.14.273-140.502.amzn1.i686
    perf-4.14.273-140.502.amzn1.i686
    kernel-tools-devel-4.14.273-140.502.amzn1.i686

src:
    kernel-4.14.273-140.502.amzn1.src

x86_64:
    perf-debuginfo-4.14.273-140.502.amzn1.x86_64
    kernel-tools-debuginfo-4.14.273-140.502.amzn1.x86_64
    kernel-headers-4.14.273-140.502.amzn1.x86_64
    perf-4.14.273-140.502.amzn1.x86_64
    kernel-tools-devel-4.14.273-140.502.amzn1.x86_64
    kernel-4.14.273-140.502.amzn1.x86_64
    kernel-tools-4.14.273-140.502.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.273-140.502.amzn1.x86_64
    kernel-debuginfo-4.14.273-140.502.amzn1.x86_64
    kernel-devel-4.14.273-140.502.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2022-1577.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) Use-after-free

EUVDB-ID: #VU62028

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1016

CWE-ID: CWE-416 - Use After Free

Exploit availability: No