CVE-2017-13236

Android - 'getpidcon' Permission Bypass in KeyStore Service

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the KeyStore service, there is a permissions bypass that allows access to protected resources. This could lead to local escalation of privilege with system execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: 8.0, 8.1. Android ID: A-68217699.

En el servicio KeyStore, hay una omisión de permisos que permite el acceso a recursos protegidos. Esto podría llevar a un escalado de privilegios local sin necesitar privilegios de ejecución del sistema. No se necesita interacción del usuario para explotarlo. Producto: Android. Versiones: 8.0, 8.1. Android ID: A-68217699.

The keystore binder service ("android.security.IKeystoreService") allows users to issue several commands related to key management, including adding, removing, exporting and generating cryptographic keys. The service is accessible to many SELinux contexts, including application contexts, but also unprivileged daemons such as "media.codec". A permission bypass vulnerability exists in the KeyStore service due to getpidcon.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-08-23 CVE Reserved
2018-02-06 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
2024-09-16 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/102979	Third Party Advisory

URL	Date	SRC
https://www.exploit-db.com/exploits/43996	2024-09-16

URL	Date	SRC

URL	Date	SRC
https://source.android.com/security/bulletin/2018-02-01	2019-10-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				8.0 Search vendor "Google" for product "Android" and version "8.0"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				8.1 Search vendor "Google" for product "Android" and version "8.1"		-		Affected