CVE-2021-25336 - Incorrect Authorization

Severity

32%

Complexity

18%

Confidentiality

23%

Improper access control in NotificationManagerService in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows untrusted applications to acquire notification access via sending a crafted malicious intent.

CVSS 3.1 Base Score 3.3. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N).

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 4 years ago

2021-03-04 21:15:00

Last updated 4 years ago

2021-03-11 17:11:00

Affected Software

Google Android 9.0

9.0

Google Android 10.0

10.0

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