Amazon Linux AMI update for pmix



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-41915
CWE-ID CWE-362
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

pmix
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Race condition

EUVDB-ID: #VU80882

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-41915

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition when the PMIx library called is called by a process
running as uid 0. A local user can exploit the race and obtain ownership of an arbitrary file on the filesystem.

Mitigation

Update the affected packages:

aarch64:
    pmix-pmi-debuginfo-3.2.3-1.amzn2023.0.3.aarch64
    pmix-tools-debuginfo-3.2.3-1.amzn2023.0.3.aarch64
    pmix-tools-3.2.3-1.amzn2023.0.3.aarch64
    pmix-pmi-devel-3.2.3-1.amzn2023.0.3.aarch64
    pmix-3.2.3-1.amzn2023.0.3.aarch64
    pmix-pmi-3.2.3-1.amzn2023.0.3.aarch64
    pmix-devel-3.2.3-1.amzn2023.0.3.aarch64
    pmix-debuginfo-3.2.3-1.amzn2023.0.3.aarch64
    pmix-debugsource-3.2.3-1.amzn2023.0.3.aarch64

src:
    pmix-3.2.3-1.amzn2023.0.3.src

x86_64:
    pmix-pmi-debuginfo-3.2.3-1.amzn2023.0.3.x86_64
    pmix-pmi-devel-3.2.3-1.amzn2023.0.3.x86_64
    pmix-tools-3.2.3-1.amzn2023.0.3.x86_64
    pmix-devel-3.2.3-1.amzn2023.0.3.x86_64
    pmix-tools-debuginfo-3.2.3-1.amzn2023.0.3.x86_64
    pmix-pmi-3.2.3-1.amzn2023.0.3.x86_64
    pmix-debuginfo-3.2.3-1.amzn2023.0.3.x86_64
    pmix-3.2.3-1.amzn2023.0.3.x86_64
    pmix-debugsource-3.2.3-1.amzn2023.0.3.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

pmix: before 3.2.3-1

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-363.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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