Amazon Linux AMI update for systemd

1) Insufficient verification of data authenticity

EUVDB-ID: #VU85658

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-7008

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a MitM attack.

The vulnerability exists due to systemd-resolved accepts records of DNSSEC-signed domains even when they have no signature. A remote attacker can perform MitM attack.

Mitigation

Update the affected packages:

aarch64:
    systemd-container-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-udev-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-libs-252.16-1.amzn2023.0.2.aarch64
    systemd-boot-unsigned-252.16-1.amzn2023.0.2.aarch64
    systemd-pam-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-container-252.16-1.amzn2023.0.2.aarch64
    systemd-standalone-sysusers-252.16-1.amzn2023.0.2.aarch64
    systemd-standalone-sysusers-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-boot-unsigned-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-networkd-252.16-1.amzn2023.0.2.aarch64
    systemd-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-resolved-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-libs-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-standalone-tmpfiles-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-journal-remote-252.16-1.amzn2023.0.2.aarch64
    systemd-networkd-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-tests-252.16-1.amzn2023.0.2.aarch64
    systemd-udev-252.16-1.amzn2023.0.2.aarch64
    systemd-debugsource-252.16-1.amzn2023.0.2.aarch64
    systemd-252.16-1.amzn2023.0.2.aarch64
    systemd-standalone-tmpfiles-252.16-1.amzn2023.0.2.aarch64
    systemd-pam-252.16-1.amzn2023.0.2.aarch64
    systemd-journal-remote-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-tests-debuginfo-252.16-1.amzn2023.0.2.aarch64
    systemd-devel-252.16-1.amzn2023.0.2.aarch64
    systemd-resolved-252.16-1.amzn2023.0.2.aarch64

noarch:
    systemd-oomd-defaults-252.16-1.amzn2023.0.2.noarch
    systemd-rpm-macros-252.16-1.amzn2023.0.2.noarch

src:
    systemd-252.16-1.amzn2023.0.2.src

x86_64:
    systemd-pam-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-networkd-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-standalone-tmpfiles-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-container-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-standalone-tmpfiles-252.16-1.amzn2023.0.2.x86_64
    systemd-journal-remote-252.16-1.amzn2023.0.2.x86_64
    systemd-standalone-sysusers-252.16-1.amzn2023.0.2.x86_64
    systemd-pam-252.16-1.amzn2023.0.2.x86_64
    systemd-boot-unsigned-252.16-1.amzn2023.0.2.x86_64
    systemd-devel-252.16-1.amzn2023.0.2.x86_64
    systemd-libs-252.16-1.amzn2023.0.2.x86_64
    systemd-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-standalone-sysusers-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-libs-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-container-252.16-1.amzn2023.0.2.x86_64
    systemd-resolved-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-boot-unsigned-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-networkd-252.16-1.amzn2023.0.2.x86_64
    systemd-resolved-252.16-1.amzn2023.0.2.x86_64
    systemd-udev-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-debugsource-252.16-1.amzn2023.0.2.x86_64
    systemd-journal-remote-debuginfo-252.16-1.amzn2023.0.2.x86_64
    systemd-udev-252.16-1.amzn2023.0.2.x86_64
    systemd-252.16-1.amzn2023.0.2.x86_64
    systemd-tests-252.16-1.amzn2023.0.2.x86_64
    systemd-tests-debuginfo-252.16-1.amzn2023.0.2.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

systemd: All versions

CPE2.3

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

External links

https://alas.aws.amazon.com/AL2023/ALAS-2024-509.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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