Amazon Linux AMI update for dbus



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-34969
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

dbus
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU78490

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-34969

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to an error in the dbus-daemon when sending a reply message from the "bus driver". If a local privileged user (e.g. root) is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, another unprivileged user with the ability to connect to the same dbus-daemon can force the service to send an unreplyable message and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

aarch64:
    dbus-libs-debuginfo-1.12.28-1.amzn2023.0.1.aarch64
    dbus-debugsource-1.12.28-1.amzn2023.0.1.aarch64
    dbus-devel-1.12.28-1.amzn2023.0.1.aarch64
    dbus-x11-1.12.28-1.amzn2023.0.1.aarch64
    dbus-tests-debuginfo-1.12.28-1.amzn2023.0.1.aarch64
    dbus-libs-1.12.28-1.amzn2023.0.1.aarch64
    dbus-debuginfo-1.12.28-1.amzn2023.0.1.aarch64
    dbus-daemon-1.12.28-1.amzn2023.0.1.aarch64
    dbus-daemon-debuginfo-1.12.28-1.amzn2023.0.1.aarch64
    dbus-tools-debuginfo-1.12.28-1.amzn2023.0.1.aarch64
    dbus-1.12.28-1.amzn2023.0.1.aarch64
    dbus-x11-debuginfo-1.12.28-1.amzn2023.0.1.aarch64
    dbus-tests-1.12.28-1.amzn2023.0.1.aarch64
    dbus-tools-1.12.28-1.amzn2023.0.1.aarch64

noarch:
    dbus-common-1.12.28-1.amzn2023.0.1.noarch
    dbus-doc-1.12.28-1.amzn2023.0.1.noarch

src:
    dbus-1.12.28-1.amzn2023.0.1.src

x86_64:
    dbus-debuginfo-1.12.28-1.amzn2023.0.1.x86_64
    dbus-x11-debuginfo-1.12.28-1.amzn2023.0.1.x86_64
    dbus-tools-debuginfo-1.12.28-1.amzn2023.0.1.x86_64
    dbus-libs-debuginfo-1.12.28-1.amzn2023.0.1.x86_64
    dbus-tools-1.12.28-1.amzn2023.0.1.x86_64
    dbus-libs-1.12.28-1.amzn2023.0.1.x86_64
    dbus-x11-1.12.28-1.amzn2023.0.1.x86_64
    dbus-1.12.28-1.amzn2023.0.1.x86_64
    dbus-devel-1.12.28-1.amzn2023.0.1.x86_64
    dbus-tests-debuginfo-1.12.28-1.amzn2023.0.1.x86_64
    dbus-daemon-debuginfo-1.12.28-1.amzn2023.0.1.x86_64
    dbus-debugsource-1.12.28-1.amzn2023.0.1.x86_64
    dbus-daemon-1.12.28-1.amzn2023.0.1.x86_64
    dbus-tests-1.12.28-1.amzn2023.0.1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

dbus: before 1.12.28-1

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-213.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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