ONTAP must generate unique session identifiers using a FIPS 140-2-approved random number generator.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-246961	NAOT-SC-000003	SV-246961r769215_rule		Medium

Description
Sequentially generated session IDs can be easily guessed by an attacker. Employing the concept of randomness in the generation of unique session identifiers helps to protect against brute-force attacks to determine future session identifiers. Unique session IDs address man-in-the-middle attacks, including session hijacking or insertion of false information into a session. If the attacker is unable to identify or guess the session information related to pending application traffic, they will have more difficulty hijacking the session or otherwise manipulating valid sessions. This requirement is applicable to devices that use a web interface for device management.

Description

Sequentially generated session IDs can be easily guessed by an attacker. Employing the concept of randomness in the generation of unique session identifiers helps to protect against brute-force attacks to determine future session identifiers. Unique session IDs address man-in-the-middle attacks, including session hijacking or insertion of false information into a session. If the attacker is unable to identify or guess the session information related to pending application traffic, they will have more difficulty hijacking the session or otherwise manipulating valid sessions. This requirement is applicable to devices that use a web interface for device management.

STIG	Date
NetApp ONTAP DSC 9.x Security Technical Implementation Guide	2021-07-28

Details

Check Text ( C-50393r769213_chk )
Use "system services web show" to see if external web services is "true". If ONTAP cannot be configured to recognize only system-generated session identifiers, this is a finding.

Fix Text (F-50347r769214_fix)
Configure ONTAP to generate unique session identifiers using a FIPS 140-2-approved random number generator by "system services web modify -external false".