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V-266167

CAT II (Medium)

The F5 BIG-IP appliance must be configured to restrict a consistent inbound IP for the entire management session.

Rule ID

SV-266167r1024399_rule

STIG

F5 BIG-IP TMOS ALG Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-001184

Discussion

This security measure helps limit the effects of denial-of-service attacks by employing antisession hijacking security safeguards. Session hijacking, also called cookie hijacking, is the exploitation of a valid computer session to gain unauthorized access to an application. The attacker steals (or hijacks) the cookies from a valid user and attempts to use them for authentication.

Check Content

From the BIG-IP GUI:
1. System.
2. Preferences.
3. Under Security Settings, verify "Require A Consistent Inbound IP For The Entire Web Session" box is checked.

From the BIG-IP Console:

tmsh list sys httpd auth-pam-validate-ip

Note: This returns a value of "on".

If the BIG-IP appliance is not configured to require a consistent inbound IP for the entire session for management sessions, this is a finding.

Fix Text

From the BIG-IP GUI:
1. System.
2. Preferences.
3. Under Security Settings, check "Require A Consistent Inbound IP For The Entire Web Session".
4. Click "Update".

From the BIG-IP Console:

tmsh modify sys httpd auth-pam-validate-ip on
tmsh save sys config