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CVE-2024-8946

UNKNOWN
Published 2024-09-17T18:31:04.213Z
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CVSS Score

V3.1
7.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.354
Higher than 35.4% of all CVEs

Attack Vector Metrics

Attack Vector
Not Available
Attack Complexity
Not Available
Privileges Required
Not Available
User Interaction
Not Available
Scope
Not Available

Impact Metrics

Confidentiality
Not Available
Integrity
Not Available
Availability
Not Available

Description

A vulnerability was found in MicroPython 1.23.0. It has been classified as critical. Affected is the function mp_vfs_umount of the file extmod/vfs.c of the component VFS Unmount Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 29943546343c92334e8518695a11fc0e2ceea68b. It is recommended to apply a patch to fix this issue. In the VFS unmount process, the comparison between the mounted path string and the unmount requested string is based solely on the length of the unmount string, which can lead to a heap buffer overflow read.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

micropython

micropython

Affected Versions:

1.23.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Heap-based Buffer Overflow in MicroPython

GHSA-74qm-4v7r-jw2f

Advisory Details

A vulnerability was found in MicroPython 1.23.0. It has been classified as critical. Affected is the function mp_vfs_umount of the file extmod/vfs.c of the component VFS Unmount Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 29943546343c92334e8518695a11fc0e2ceea68b. It is recommended to apply a patch to fix this issue. In the VFS unmount process, the comparison between the mounted path string and the unmount requested string is based solely on the length of the unmount string, which can lead to a heap buffer overflow read.

Affected Packages

PyPI micropython-copy
ECOSYSTEM: ≥0 ≤3.3.3.post3
PyPI micropython-io
ECOSYSTEM: ≥0 ≤0.1
PyPI micropython-os-path
ECOSYSTEM: ≥0 ≤0.1.3
PyPI micropython-string
ECOSYSTEM: ≥0 ≤0.1

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-8946
WEB https://github.com/micropython/micropython/issues/13006
WEB https://github.com/micropython/micropython/issues/13006#issuecomment-1820309455
WEB https://github.com/micropython/micropython/commit/29943546343c92334e8518695a11fc0e2ceea68b
WEB https://github.com/pypa/advisory-database/tree/main/vulns/micropython-copy/PYSEC-2024-91.yaml
WEB https://github.com/pypa/advisory-database/tree/main/vulns/micropython-io/PYSEC-2024-93.yaml
WEB https://github.com/pypa/advisory-database/tree/main/vulns/micropython-os-path/PYSEC-2024-95.yaml
WEB https://github.com/pypa/advisory-database/tree/main/vulns/micropython-string/PYSEC-2024-96.yaml
WEB https://vuldb.com/?ctiid.277764
WEB https://vuldb.com/?id.277764
WEB https://vuldb.com/?submit.409312

Advisory provided by GitHub Security Advisory Database. Published: September 17, 2024, Modified: September 25, 2024

References

https://vuldb.com/?id.277764
https://vuldb.com/?ctiid.277764
https://vuldb.com/?submit.409312
https://github.com/micropython/micropython/issues/13006
https://github.com/micropython/micropython/issues/13006#issuecomment-1820309455
https://github.com/micropython/micropython/commit/29943546343c92334e8518695a11fc0e2ceea68b
Published: 2024-09-17T18:31:04.213Z
Last Modified: 2024-09-17T20:14:27.949Z
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