The web server must invalidate session identifiers upon hosted application user logout or other session termination.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-56021	SRG-APP-000220-WSR-000201	SV-70275r2_rule		Medium

Description
Captured sessions can be reused in "replay" attacks. This requirement limits the ability of adversaries from capturing and continuing to employ previously valid session IDs. Session IDs are tokens generated by web applications to uniquely identify an application user's session. Unique session IDs help to reduce predictability of said identifiers. When a user logs out, or when any other session termination event occurs, the web server must terminate the user session to minimize the potential for an attacker to hijack that particular user session.

Description

Captured sessions can be reused in "replay" attacks. This requirement limits the ability of adversaries from capturing and continuing to employ previously valid session IDs. Session IDs are tokens generated by web applications to uniquely identify an application user's session. Unique session IDs help to reduce predictability of said identifiers. When a user logs out, or when any other session termination event occurs, the web server must terminate the user session to minimize the potential for an attacker to hijack that particular user session.

STIG	Date
Web Server Security Requirements Guide	2015-08-28

Details

Check Text ( C-56591r2_chk )
Review the web server documentation and deployed configuration to verify that the web server is configured to invalidate session identifiers when a session is terminated. If the web server does not invalidate session identifiers when a session is terminated, this is a finding.

Fix Text (F-60899r1_fix)
Configure the web server to invalidate session identifiers when a session is terminated.