CVE-2024-8946
MicroPython VFS Unmount Handler Heap Buffer Overflow
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.
INFO
Published Date :
Sept. 17, 2024, 7:15 p.m.
Last Modified :
Sept. 17, 2024, 7:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
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CVE Received by [email protected]
Sep. 17, 2024
Action Type Old Value New Value Added 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. Added Reference VulDB https://vuldb.com/?id.277764 [No types assigned] Added Reference VulDB https://vuldb.com/?ctiid.277764 [No types assigned] Added Reference VulDB https://vuldb.com/?submit.409312 [No types assigned] Added Reference VulDB https://github.com/micropython/micropython/issues/13006 [No types assigned] Added Reference VulDB https://github.com/micropython/micropython/issues/13006#issuecomment-1820309455 [No types assigned] Added Reference VulDB https://github.com/micropython/micropython/commit/29943546343c92334e8518695a11fc0e2ceea68b [No types assigned] Added CWE VulDB CWE-122 Added CVSS V2 VulDB (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 VulDB AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Added CVSS V4.0 VulDB 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-8946 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-8946
weaknesses.