CVE-2021-25356 - Incorrect Authorization

Severity

88%

Complexity

20%

Confidentiality

100%

An improper caller check vulnerability in Managed Provisioning prior to SMR APR-2021 Release 1 allows unprivileged application to install arbitrary application, grant device admin permission and then delete several installed application.

CVSS 3.1 Base Score 8.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Demo Examples

Incorrect Authorization

CWE-863

The following code could be for a medical records application. It displays a record to already authenticated users, confirming the user's authorization using a value stored in a cookie.


               
}
}
setcookie("role", $role, time()+60*60*2);
die("\n");
DisplayMedicalHistory($_POST['patient_ID']);
die("You are not Authorized to view this record\n");

The programmer expects that the cookie will only be set when getRole() succeeds. The programmer even diligently specifies a 2-hour expiration for the cookie. However, the attacker can easily set the "role" cookie to the value "Reader". As a result, the $role variable is "Reader", and getRole() is never invoked. The attacker has bypassed the authorization system.

Overview

Type

Google Android

First reported 3 years ago

2021-04-09 18:15:00

Last updated 3 years ago

2021-06-11 15:15:00

Affected Software

Google Android 8.1

8.1

Google Android 9.0

9.0

Google Android 10.0

10.0

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