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CVE-2024-8947— MicroPython objarray.c use after free

Quick assessment

Affected
n/a MicroPython
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MicroPython是MicroPython开源的一个小型的开源Python编程语言解释器。 MicroPython 1.22.2版本存在资源管理错误漏洞，该漏洞源于py/objarray.c文件中的未知功能导致了释放后重用。

CVSS 5.6 · Medium EPSS 1.03% · P62

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2024-8947

Vulnerability Information
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Vulnerability Title
MicroPython objarray.c use after free
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in MicroPython 1.22.2. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file py/objarray.c. The manipulation leads to use after free. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. Upgrading to version 1.23.0 is able to address this issue. The identifier of the patch is 4bed614e707c0644c06e117f848fa12605c711cd. It is recommended to upgrade the affected component. In micropython objarray component, when a bytes object is resized and copied into itself, it may reference memory that has already been freed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
MicroPython 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MicroPython是MicroPython开源的一个小型的开源Python编程语言解释器。 MicroPython 1.22.2版本存在资源管理错误漏洞，该漏洞源于py/objarray.c文件中的未知功能导致了释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- MicroPython 1.22.2 -

II. Public POCs for CVE-2024-8947

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III. Intelligence Information for CVE-2024-8947

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Vendor Advisories for CVE-2024-8947 (1)

Proof of Concept for CVE-2024-8947 (1)

Vendor Pages for CVE-2024-8947 (1)

Other References for CVE-2024-8947 (1)

Same Patch Batch · n/a · 2024-09-17 · 9 CVEs total

CVE-2024-38812 9.8 CRITICAL Heap-overflow vulnerability
CVE-2024-38813 7.5 HIGH Privilege escalation vulnerability
CVE-2024-8948 7.3 HIGH MicroPython objint.c mpz_as_bytes heap-based overflow
CVE-2024-8946 7.3 HIGH MicroPython VFS Unmount vfs.c mp_vfs_umount heap-based overflow
CVE-2024-46085 FrogCms 安全漏洞
CVE-2024-46362 FrogCms 安全漏洞
CVE-2024-47047 TYPO3 安全漏洞
CVE-2024-47049 File Handling and Storage Helper 安全漏洞

IV. Related Vulnerabilities

Same product: MicroPython
Same vendor: n/a
Same weakness: CWE-416

V. Comments for CVE-2024-8947

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