Amazon Linux AMI update for gawk

1) Out-of-bounds read

EUVDB-ID: #VU79963

Risk: Low

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

CVE-ID: CVE-2023-4156

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in builtin.c. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected packages:

aarch64:
    gawk-devel-5.1.0-3.amzn2023.0.3.aarch64
    gawk-all-langpacks-5.1.0-3.amzn2023.0.3.aarch64
    gawk-debugsource-5.1.0-3.amzn2023.0.3.aarch64
    gawk-debuginfo-5.1.0-3.amzn2023.0.3.aarch64
    gawk-5.1.0-3.amzn2023.0.3.aarch64

noarch:
    gawk-doc-5.1.0-3.amzn2023.0.3.noarch

src:
    gawk-5.1.0-3.amzn2023.0.3.src

x86_64:
    gawk-devel-5.1.0-3.amzn2023.0.3.x86_64
    gawk-all-langpacks-5.1.0-3.amzn2023.0.3.x86_64
    gawk-debugsource-5.1.0-3.amzn2023.0.3.x86_64
    gawk-5.1.0-3.amzn2023.0.3.x86_64
    gawk-debuginfo-5.1.0-3.amzn2023.0.3.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

gawk: before 5.1.0-3

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:a:amazon_web_services:gawk:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-292.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.