The DNS implementation must recognize only system-generated session identifiers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-34199	SRG-NET-000233-DNS-000140	SV-44675r1_rule		Medium

Description
Unique session IDs are the opposite of sequentially generated session IDs which can be easily guessed by an attacker. Unique session identifiers help to reduce predictability of said 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 DNS application traffic, they will have more difficulty in hijacking the session or otherwise manipulating valid sessions.

Description

Unique session IDs are the opposite of sequentially generated session IDs which can be easily guessed by an attacker. Unique session identifiers help to reduce predictability of said 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 DNS application traffic, they will have more difficulty in hijacking the session or otherwise manipulating valid sessions.

STIG	Date
Domain Name System (DNS) Security Requirements Guide	2012-10-24

Details

Check Text ( C-42180r1_chk )
Review the DNS vendor documentation and configuration to determine if the DNS implementation recognizes only system generated session identifiers. If the system recognizes anything other than system generated identifiers, this is a finding.

Fix Text (F-38129r1_fix)
Ensure the DNS implementation recognizes only system generated session identifiers.