CVE-2023-21560 - Incorrect Authorization

Severity

65%

Complexity

6%

Confidentiality

98%

Windows Boot Manager Security Feature Bypass Vulnerability.

Windows Boot Manager Security Feature Bypass Vulnerability

CVSS 3.1 Base Score 6.6. CVSS Attack Vector: physical. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

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

Microsoft Windows

First reported 2 years ago

2023-01-10 22:15:00

Last updated 2 years ago

2023-04-27 19:15:00

Affected Software

Microsoft Windows Server 2016

Microsoft Windows RT 8.1

Microsoft Windows Server 2012

Microsoft Windows Server 2019

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