CVE-2022-21913 - Incorrect Authorization

Severity

53%

Complexity

16%

Confidentiality

60%

Local Security Authority (Domain Policy) Remote Protocol Security Feature Bypass.

CVSS 3.1 Base Score 5.3. CVSS Attack Vector: network. CVSS Attack Complexity: high. CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).

CVSS 3.1 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/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

Microsoft Windows

First reported 3 years ago

2022-01-11 21:15:00

Last updated 2 years ago

2022-05-23 17:29:00

Affected Software

Microsoft Windows 10 64-bit

Microsoft Windows 10 32-bit

Microsoft Windows 10 1607 64-bit

1607

Microsoft Windows 10 1607 32-bit

1607

Microsoft Windows 10 1809 on ARM64

1809

Microsoft Windows 10 1809 on x64

1809

Microsoft Windows 10 1909 64-bit

1909

Microsoft Windows RT 8.1

Microsoft Windows Server 2012

Microsoft Windows Server 2016

Microsoft Windows Server 2019

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