Amazon Linux AMI update for systemd



Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-3997
CVE-2022-4415
CVE-2022-45873
CWE-ID CWE-674
CWE-269
CWE-400
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

systemd
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Uncontrolled recursion

EUVDB-ID: #VU59358

Risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Clear]

CVE-ID: CVE-2021-3997

CWE-ID: CWE-674 - Uncontrolled Recursion

Exploit availability: No

Description

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

The vulnerability exists due to uncontrolled recursion in systemd-tmpfiles. A local user can create multiple nested directories in the /tmp folder and case systemd to crash during the system boot.

Mitigation

Update the affected packages:

aarch64:
    systemd-resolved-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-sysusers-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-sysusers-252.4-1161.amzn2023.0.1.aarch64
    systemd-pam-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-libs-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-udev-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-journal-remote-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-networkd-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-tmpfiles-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-container-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-networkd-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-container-252.4-1161.amzn2023.0.1.aarch64
    systemd-pam-252.4-1161.amzn2023.0.1.aarch64
    systemd-devel-252.4-1161.amzn2023.0.1.aarch64
    systemd-resolved-252.4-1161.amzn2023.0.1.aarch64
    systemd-libs-252.4-1161.amzn2023.0.1.aarch64
    systemd-journal-remote-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-tmpfiles-252.4-1161.amzn2023.0.1.aarch64
    systemd-tests-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-debugsource-252.4-1161.amzn2023.0.1.aarch64
    systemd-udev-252.4-1161.amzn2023.0.1.aarch64
    systemd-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-252.4-1161.amzn2023.0.1.aarch64
    systemd-tests-252.4-1161.amzn2023.0.1.aarch64

noarch:
    systemd-oomd-defaults-252.4-1161.amzn2023.0.1.noarch
    systemd-rpm-macros-252.4-1161.amzn2023.0.1.noarch

src:
    systemd-252.4-1161.amzn2023.0.1.src

x86_64:
    systemd-resolved-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-udev-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-sysusers-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-journal-remote-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-networkd-252.4-1161.amzn2023.0.1.x86_64
    systemd-networkd-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-libs-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-resolved-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-tmpfiles-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-pam-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-tmpfiles-252.4-1161.amzn2023.0.1.x86_64
    systemd-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-devel-252.4-1161.amzn2023.0.1.x86_64
    systemd-container-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-sysusers-252.4-1161.amzn2023.0.1.x86_64
    systemd-libs-252.4-1161.amzn2023.0.1.x86_64
    systemd-journal-remote-252.4-1161.amzn2023.0.1.x86_64
    systemd-container-252.4-1161.amzn2023.0.1.x86_64
    systemd-pam-252.4-1161.amzn2023.0.1.x86_64
    systemd-udev-252.4-1161.amzn2023.0.1.x86_64
    systemd-252.4-1161.amzn2023.0.1.x86_64
    systemd-debugsource-252.4-1161.amzn2023.0.1.x86_64
    systemd-tests-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-tests-252.4-1161.amzn2023.0.1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

systemd: All versions

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-025.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) Improper Privilege Management

EUVDB-ID: #VU70461

Risk: Low

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

CVE-ID: CVE-2022-4415

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

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

The vulnerability exists due to improper privilege management when handling coredumps in coredump/coredump.c. A local user can gain access to sensitive information.

The vulnerability affects systems with libacl support.

Mitigation

Update the affected packages:

aarch64:
    systemd-resolved-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-sysusers-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-sysusers-252.4-1161.amzn2023.0.1.aarch64
    systemd-pam-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-libs-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-udev-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-journal-remote-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-networkd-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-tmpfiles-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-container-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-networkd-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-container-252.4-1161.amzn2023.0.1.aarch64
    systemd-pam-252.4-1161.amzn2023.0.1.aarch64
    systemd-devel-252.4-1161.amzn2023.0.1.aarch64
    systemd-resolved-252.4-1161.amzn2023.0.1.aarch64
    systemd-libs-252.4-1161.amzn2023.0.1.aarch64
    systemd-journal-remote-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-tmpfiles-252.4-1161.amzn2023.0.1.aarch64
    systemd-tests-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-debugsource-252.4-1161.amzn2023.0.1.aarch64
    systemd-udev-252.4-1161.amzn2023.0.1.aarch64
    systemd-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-252.4-1161.amzn2023.0.1.aarch64
    systemd-tests-252.4-1161.amzn2023.0.1.aarch64

noarch:
    systemd-oomd-defaults-252.4-1161.amzn2023.0.1.noarch
    systemd-rpm-macros-252.4-1161.amzn2023.0.1.noarch

src:
    systemd-252.4-1161.amzn2023.0.1.src

x86_64:
    systemd-resolved-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-udev-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-sysusers-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-journal-remote-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-networkd-252.4-1161.amzn2023.0.1.x86_64
    systemd-networkd-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-libs-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-resolved-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-tmpfiles-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-pam-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-tmpfiles-252.4-1161.amzn2023.0.1.x86_64
    systemd-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-devel-252.4-1161.amzn2023.0.1.x86_64
    systemd-container-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-sysusers-252.4-1161.amzn2023.0.1.x86_64
    systemd-libs-252.4-1161.amzn2023.0.1.x86_64
    systemd-journal-remote-252.4-1161.amzn2023.0.1.x86_64
    systemd-container-252.4-1161.amzn2023.0.1.x86_64
    systemd-pam-252.4-1161.amzn2023.0.1.x86_64
    systemd-udev-252.4-1161.amzn2023.0.1.x86_64
    systemd-252.4-1161.amzn2023.0.1.x86_64
    systemd-debugsource-252.4-1161.amzn2023.0.1.x86_64
    systemd-tests-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-tests-252.4-1161.amzn2023.0.1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

systemd: All versions

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-025.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.

3) Resource exhaustion

EUVDB-ID: #VU72887

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-2022-45873

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to a deadlock within the parse_elf_object() function in shared/elf-util.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

aarch64:
    systemd-resolved-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-sysusers-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-sysusers-252.4-1161.amzn2023.0.1.aarch64
    systemd-pam-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-libs-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-udev-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-journal-remote-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-networkd-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-tmpfiles-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-container-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-networkd-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-container-252.4-1161.amzn2023.0.1.aarch64
    systemd-pam-252.4-1161.amzn2023.0.1.aarch64
    systemd-devel-252.4-1161.amzn2023.0.1.aarch64
    systemd-resolved-252.4-1161.amzn2023.0.1.aarch64
    systemd-libs-252.4-1161.amzn2023.0.1.aarch64
    systemd-journal-remote-252.4-1161.amzn2023.0.1.aarch64
    systemd-standalone-tmpfiles-252.4-1161.amzn2023.0.1.aarch64
    systemd-tests-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-debugsource-252.4-1161.amzn2023.0.1.aarch64
    systemd-udev-252.4-1161.amzn2023.0.1.aarch64
    systemd-debuginfo-252.4-1161.amzn2023.0.1.aarch64
    systemd-252.4-1161.amzn2023.0.1.aarch64
    systemd-tests-252.4-1161.amzn2023.0.1.aarch64

noarch:
    systemd-oomd-defaults-252.4-1161.amzn2023.0.1.noarch
    systemd-rpm-macros-252.4-1161.amzn2023.0.1.noarch

src:
    systemd-252.4-1161.amzn2023.0.1.src

x86_64:
    systemd-resolved-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-udev-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-sysusers-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-journal-remote-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-networkd-252.4-1161.amzn2023.0.1.x86_64
    systemd-networkd-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-libs-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-resolved-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-tmpfiles-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-pam-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-tmpfiles-252.4-1161.amzn2023.0.1.x86_64
    systemd-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-devel-252.4-1161.amzn2023.0.1.x86_64
    systemd-container-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-standalone-sysusers-252.4-1161.amzn2023.0.1.x86_64
    systemd-libs-252.4-1161.amzn2023.0.1.x86_64
    systemd-journal-remote-252.4-1161.amzn2023.0.1.x86_64
    systemd-container-252.4-1161.amzn2023.0.1.x86_64
    systemd-pam-252.4-1161.amzn2023.0.1.x86_64
    systemd-udev-252.4-1161.amzn2023.0.1.x86_64
    systemd-252.4-1161.amzn2023.0.1.x86_64
    systemd-debugsource-252.4-1161.amzn2023.0.1.x86_64
    systemd-tests-debuginfo-252.4-1161.amzn2023.0.1.x86_64
    systemd-tests-252.4-1161.amzn2023.0.1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

systemd: All versions

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-025.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.



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