IM
IronMonkey Threat Research

CVE-2022-20421 HIGH

Published: 2022-10-11 | Last Modified: 2024-11-21 | Status: Modified

Description

In binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-239630375References: Upstream kernel

Additional Descriptions (1)

En la función binder_inc_ref_for_node del archivo binder.c, se presenta una posible forma de corromper la memoria debido a un uso de memoria previamente liberada. Esto podría conllevar a una escalada local de privilegios sin ser necesarios privilegios de ejecución adicionales. No es requerida una interacción del usuario para su explotación. Producto: Android, Versiones: Android kernel, ID de Android: A-239630375, Referencias: Kernel ascendente

CVSS Metrics

Base Score: 7.8 (HIGH)

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

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactHIGH
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 5.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-416

Affected Products

Vendor Product Version Update Type
google android - <built-in method update of dict object at 0x7fd3702e6f40> Operating System
debian debian_linux 10.0 <built-in method update of dict object at 0x7fd340f26840> Operating System
debian debian_linux 11.0 <built-in method update of dict object at 0x7fd34011ca00> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Yes cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References