Amazon Linux AMI update for unbound



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-1488
CWE-ID CWE-862
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

unbound
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Missing authorization

EUVDB-ID: #VU87749

Risk: Low

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

CVE-ID: CVE-2024-1488

CWE-ID: CWE-862 - Missing Authorization

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to missing authorization in the unbound.service that listens on localhost on port 8953. A local user can send a specially crafted request and alter the server configuration.

Mitigation

Update the affected packages:

aarch64:
    unbound-anchor-debuginfo-1.17.1-1.amzn2023.0.3.aarch64
    unbound-devel-1.17.1-1.amzn2023.0.3.aarch64
    unbound-debuginfo-1.17.1-1.amzn2023.0.3.aarch64
    python3-unbound-debuginfo-1.17.1-1.amzn2023.0.3.aarch64
    unbound-1.17.1-1.amzn2023.0.3.aarch64
    unbound-utils-1.17.1-1.amzn2023.0.3.aarch64
    unbound-libs-1.17.1-1.amzn2023.0.3.aarch64
    unbound-libs-debuginfo-1.17.1-1.amzn2023.0.3.aarch64
    unbound-utils-debuginfo-1.17.1-1.amzn2023.0.3.aarch64
    unbound-anchor-1.17.1-1.amzn2023.0.3.aarch64
    python3-unbound-1.17.1-1.amzn2023.0.3.aarch64
    unbound-debugsource-1.17.1-1.amzn2023.0.3.aarch64

src:
    unbound-1.17.1-1.amzn2023.0.3.src

x86_64:
    unbound-debuginfo-1.17.1-1.amzn2023.0.3.x86_64
    unbound-libs-debuginfo-1.17.1-1.amzn2023.0.3.x86_64
    unbound-anchor-debuginfo-1.17.1-1.amzn2023.0.3.x86_64
    python3-unbound-debuginfo-1.17.1-1.amzn2023.0.3.x86_64
    unbound-devel-1.17.1-1.amzn2023.0.3.x86_64
    python3-unbound-1.17.1-1.amzn2023.0.3.x86_64
    unbound-utils-1.17.1-1.amzn2023.0.3.x86_64
    unbound-anchor-1.17.1-1.amzn2023.0.3.x86_64
    unbound-1.17.1-1.amzn2023.0.3.x86_64
    unbound-libs-1.17.1-1.amzn2023.0.3.x86_64
    unbound-debugsource-1.17.1-1.amzn2023.0.3.x86_64
    unbound-utils-debuginfo-1.17.1-1.amzn2023.0.3.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

unbound: All versions

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2024-604.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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