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Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : Micropython vulnerabilities (USN-7472-1)

medium Nessus Plugin ID 235069

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7472-1 advisory.

 Junwha Hong and Wonil Jang discovered that Micropython incorrectly handled the length of a buffer in mp_vfs_umount, leading to a heap-based buffer

 overflow vulnerability. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code.
 (CVE-2024-8946)

 Junwha Hong and Wonil Jang discovered that Micropython incorrectly handled memory, leading to a use-after- free vulnerability under certain

 circumstances. If a user or automated system were tricked into opening a

 specially crafted file, an attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code.

 (CVE-2024-8947)

 It was discovered that Middleware USB Host MCU Component incorrectly handled memory, leading to a buffer overflow vulnerability, If a user or

 automated system were tricked into opening a specially crafted file, an

 attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code.
 (CVE-2021-42553)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected micropython package.

See Also

https://ubuntu.com/security/notices/USN-7472-1

Plugin Details

Severity: Medium

ID: 235069

File Name: ubuntu_USN-7472-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 5/1/2025

Updated: 5/1/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2024-8946

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2021-42553

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:micropython, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.10

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/1/2025

Vulnerability Publication Date: 10/21/2022

Reference Information

CVE: CVE-2021-42553, CVE-2024-8946, CVE-2024-8947

USN: 7472-1