STIGQter: STIG Summary: Microsoft IIS 8.5 Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The IIS 8.5 web server must limit the amount of time a cookie persists.

DISA Rule

SV-214420r508658_rule

Vulnerability Number

V-214420

Group Title

SRG-APP-000223-WSR-000145

Rule Version

IISW-SV-000135

Severity

CAT II

CCI(s)

• CCI-001664 - The information system recognizes only session identifiers that are system-generated.

Weight

10

Fix Recommendation

Open the IIS 8.5 Manager.

Click the IIS 8.5 web server name.

Under the "ASP.NET" section, select "Session State".

Under "Cookie Settings", select the "Use Cookies" mode from the "Mode:" drop-down list.

Under “Time-out (in minutes), enter a value of “20 or less”.

Check Contents

Note: If IIS 8.5 server/site is used only for system-to-system maintenance, does not allow users to connect to interface, and is restricted to specific system IPs, this is Not Applicable.

Open the IIS 8.5 Manager.
Click the IIS 8.5 web server name.
Under the "ASP.NET" section, select "Session State".
Under "Cookie Settings", verify the "Use Cookies" mode is selected from the "Mode:" drop-down list.
Under Time-out (in minutes), verify “20 minutes or less” is selected.

If the "Use Cookies” mode is selected and Time-out (in minutes) is configured for “20 minutes or less”, this is not a finding.

Alternative method:
Click the site name.
Select "Configuration Editor" under the "Management" section.
From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState".
Verify the "cookieless" is set to "UseCookies".

If the "cookieless" is not set to "UseCookies", this is a finding.

Vulnerability Number

V-214420

Documentable

False

Rule Version

IISW-SV-000135

Severity Override Guidance

Note: If IIS 8.5 server/site is used only for system-to-system maintenance, does not allow users to connect to interface, and is restricted to specific system IPs, this is Not Applicable.

Open the IIS 8.5 Manager.
Click the IIS 8.5 web server name.
Under the "ASP.NET" section, select "Session State".
Under "Cookie Settings", verify the "Use Cookies" mode is selected from the "Mode:" drop-down list.
Under Time-out (in minutes), verify “20 minutes or less” is selected.

If the "Use Cookies” mode is selected and Time-out (in minutes) is configured for “20 minutes or less”, this is not a finding.

Alternative method:
Click the site name.
Select "Configuration Editor" under the "Management" section.
From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState".
Verify the "cookieless" is set to "UseCookies".

If the "cookieless" is not set to "UseCookies", this is a finding.

Check Content Reference

M

Target Key

4000

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