The ALG must recognize only system-generated session identifiers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-54619	SRG-NET-000233-ALG-000115	SV-68865r1_rule		Medium

Description
Network elements (depending on function) utilize sessions and session identifiers to control application behavior and user access. If an attacker can guess the session identifier, or can inject or manually insert session information, the valid user's application session can be compromised. 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 in hijacking the session or otherwise manipulating valid sessions. This requirement focuses on communications protection for the application session rather than for the network packet.

Description

Network elements (depending on function) utilize sessions and session identifiers to control application behavior and user access. If an attacker can guess the session identifier, or can inject or manually insert session information, the valid user's application session can be compromised. 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 in hijacking the session or otherwise manipulating valid sessions. This requirement focuses on communications protection for the application session rather than for the network packet.

STIG	Date
Application Layer Gateway (ALG) Security Requirements Guide (SRG)	2015-06-30

Details

Check Text ( C-55239r1_chk )
Verify the ALG recognizes only system-generated session identifiers. If the ALG does not recognize only system-generated session identifiers, this is a finding.

Fix Text (F-59475r1_fix)
Configure ALG to recognize only system-generated session identifiers.