Session-only-based cookies must be enabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-272631	CYLN-OP-000115	SV-272631r1112743_rule		Medium

Description

Cookies must only be allowed per session and only for approved URLs, as permanently stored cookies can be used for malicious intent. Approved URLs may be allowlisted via the "CookiesAllowedForUrls" or "SaveCookiesOnExit" policy settings, but these are not requirements.

STIG	Date
Arctic Wolf CylanceON-PREM Security Technical Implementation Guide	2025-06-11

Details

Check Text (C-76712r1112741_chk)

Verify the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Configure cookies" is set to "Enabled" with the option value set to "Keep cookies for the duration of the session, except ones listed in 'SaveCookiesOnExit'".

Use the Windows Registry Editor to navigate to the following key:
HKLM\SOFTWARE\Policies\Microsoft\Edge

If the value for "DefaultCookiesSetting" is not set to "REG_DWORD = 4", this is a finding.

Fix Text (F-76617r1112742_fix)

Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Configure cookies" to "Enabled" with the option value set to "Keep cookies for the duration of the session, except ones listed in 'SaveCookiesOnExit'".