CVE-2019-6644 - Improper Authorization

Severity

94%

Complexity

39%

Confidentiality

91%

Similar to the issue identified in CVE-2018-12120, on versions 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2, and 12.1.0-12.1.4 BIG-IP will bind a debug nodejs process to all interfaces when invoked. This may expose the process to unauthorized users if the plugin is left in debug mode and the port is accessible.

Similar to the issue identified in CVE-2018-12120, on versions 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2, and 12.1.0-12.1.4 BIG-IP will bind a debug nodejs process to all interfaces when invoked. This may expose the process to unauthorized users if the plugin is left in debug mode and the port is accessible.

CVSS 3.1 Base Score 9.4. 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:H/A:L).

CVSS 2.0 Base Score 6.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P).

Demo Examples

Improper Authorization

CWE-285

This function runs an arbitrary SQL query on a given database, returning the result of the query.


               
$employeeRecord = runEmployeeQuery('EmployeeDB',$_GET['EmployeeName']);
return $preparedStatement->fetchAll();//Use a prepared statement to avoid CWE-89
/.../

While this code is careful to avoid SQL Injection, the function does not confirm the user sending the query is authorized to do so. An attacker may be able to obtain sensitive employee information from the database.

Improper Authorization

CWE-285

The following program could be part of a bulletin board system that allows users to send private messages to each other. This program intends to authenticate the user before deciding whether a private message should be displayed. Assume that LookupMessageObject() ensures that the $id argument is numeric, constructs a filename based on that id, and reads the message details from that file. Also assume that the program stores all private messages for all users in the same directory.


               
DisplayPrivateMessage($id);
print "Body: " . encodeHTML($Message->{body}) . "\n";
# For purposes of this example, assume that CWE-309 and# CWE-523 do not apply.
ExitError("invalid username or password");

While the program properly exits if authentication fails, it does not ensure that the message is addressed to the user. As a result, an authenticated attacker could provide any arbitrary identifier and read private messages that were intended for other users.

One way to avoid this problem would be to ensure that the "to" field in the message object matches the username of the authenticated user.

Overview

Type

F5

First reported 5 years ago

2019-09-04 17:15:00

Last updated 5 years ago

2019-09-09 17:04:00

Affected Software

F5 Networks Big-IP Local Traffic Manager (LTM)

F5 Big-IP Local Traffic Manager (LTM) 14.0.0

14.0.0

F5 BIG-IP Local Traffic Manager 14.1.0

14.1.0

F5 Big-IP Advanced Firewall Manager (AFM)

F5 Big-IP Advanced Firewall Manager (AFM) 14.0.0

14.0.0

F5 BIG-IP Advanced Firewall Manager 14.1.0

14.1.0

F5 Big-IP Application Acceleration Manager (AAM)

F5 Big-IP Application Acceleration Manager (AAM) 14.0.0

14.0.0

F5 BIG-IP Application Acceleration Manager 14.1.0

14.1.0

F5 Big-IP Analytics

F5 Big-IP Analytics 14.0.0

14.0.0

F5 BIG-IP Analytics 14.1.0

14.1.0

F5 Big-IP Access Policy Manager (APM)

F5 Big-IP Access Policy Manager (APM) 14.0.0

14.0.0

F5 BIG-IP Access Policy Manager (APM) 14.1.0

14.1.0

F5 Big-IP Application Security Manager (ASM)

F5 Big-IP Application Security Manager (ASM) 14.0.0

14.0.0

F5 BIG-IP Application Security Manager 14.1.0

14.1.0

F5 Big-IP Edge Gateway

F5 Big-IP Edge Gateway 14.0.0

14.0.0

F5 BIG-IP Edge Gateway 14.1.0

14.1.0

F5 Big-IP Fraud Protection Service (FPS)

F5 Big-IP Fraud Protection Service (FPS) 14.0.0

14.0.0

F5 BIG-IP Fraud Protection Service 14.1.0

14.1.0

F5 Big-IP Global Traffic Manager (GTM)

F5 Big-IP Global Traffic Manager (GTM) 14.0.0

14.0.0

F5 BIG-IP Global Traffic Manager 14.1.0

14.1.0

F5 Big-IP Link Controller

F5 Big-IP Link Controller 14.0.0

14.0.0

F5 BIG-IP Link Controller 14.1.0

14.1.0

F5 Big-IP Policy Enforcement Manager (PEM)

F5 Big-IP Policy Enforcement Manager (PEM) 14.0.0

14.0.0

F5 BIG-IP Policy Enforcement Manager 14.1.0

14.1.0

F5 Big-IP WebAccelerator

F5 Big-IP WebAccelerator 14.0.0

14.0.0

F5 BIG-IP WebAccelerator 14.1.0

14.1.0

F5 Big-IP Domain Name System (DNS)

F5 Big-IP Domain Name System (DNS) 14.0.0

14.0.0

F5 BIG-IP Domain Name System 14.1.0

14.1.0

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