CVE-2020-5318 - Incorrect Authorization

Severity

75%

Complexity

39%

Confidentiality

60%

Dell EMC Isilon OneFS versions 8.1.2, 8.1.0.4, 8.1.0.3, and 8.0.0.7 contain a vulnerability in some configurations. An attacker may exploit this vulnerability to gain access to restricted files. The non-RAN HTTP and WebDAV file-serving components have a vulnerability wherein when either are enabled, and Basic Authentication is enabled for either or both components, files are accessible without authentication.

Dell EMC Isilon OneFS versions 8.1.2, 8.1.0.4, 8.1.0.3, and 8.0.0.7 contain a vulnerability in some configurations. An attacker may exploit this vulnerability to gain access to restricted files. The non-RAN HTTP and WebDAV file-serving components have a vulnerability wherein when either are enabled, and Basic Authentication is enabled for either or both components, files are accessible without authentication.

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

Dell EMC Isilon OneFS

First reported 5 years ago

2020-02-06 18:15:00

Last updated 5 years ago

2020-02-11 19:19:00

Affected Software

Dell EMC Isilon OneFS 8.0.0.7

8.0.0.7

Dell EMC Isilon OneFS 8.1.0.3

8.1.0.3

Dell EMC Isilon OneFS 8.1.0.4

8.1.0.4

Dell EMC Isilon OneFS 8.1.2

8.1.2

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