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The Palo Alto Networks security platform must delete or quarantine malicious code in response to malicious code detection.


Finding ID Version Rule ID IA Controls Severity
V-62581 PANW-AG-000063 SV-77071r2_rule Medium
Taking an appropriate action based on local organizational incident handling procedures minimizes the impact of this code on the network. This requirement is limited to ALGs web content filters and packet inspection firewalls that perform malicious code detection as part of their functionality. The Palo Alto Networks security platform allows customized profiles to be used to perform antivirus inspection for traffic between zones. Antivirus, anti-spyware, and vulnerability protection features require a specific license. There is a default Antivirus Profile; the profile inspects all of the listed protocol decoders for viruses, and generates alerts for SMTP, IMAP, and POP3 protocols while denying for FTP, HTTP, and SMB protocols. However, these default actions cannot be edited and the values for the FTP, HTTP, and SMB protocols do not meet the requirement, so customized profiles must be used. Inspection is done through stream-based analysis, which means files are not cached or stored in their entirety on the firewall, but analyzed in real-time as they pass through the firewall. Therefore, any detected virus will automatically be deleted when detected.
Palo Alto Networks ALG Security Technical Implementation Guide 2019-01-04


Check Text ( C-63385r2_chk )
Go to Objects >> Security Profiles >> Antivirus

If there are no Antivirus Profiles configured other than the default, this is a finding.

View the configured Antivirus Profiles; for each protocol decoder (SMTP, IMAP, POP3, FTP, HTTP, SMB), if the "Action" is anything other than “deny”, this is a finding.

Go to Policies >> Security

Review each of the configured security policies in turn. For any Security Policy that affects traffic between Zones (interzone), view the "Profile" column.

If the "Profile" column does not display the "Antivirus Profile" symbol, this is a finding.
Fix Text (F-68501r2_fix)
To create an Antivirus Profile:
Go to Objects >> Security Profiles >> Antivirus

Select "Add".

In the "Antivirus Profile" window, complete the required fields.

Complete the "Name" and "Description" fields.

In the "Antivirus" tab, for all Decoders (SMTP, IMAP, POP3, FTP, HTTP, SMB protocols), set the "Action" to “deny”. This will deny the data stream and create a log record.

Select "OK".

Use the Profile in a Security Policy:
Go to Policies >> Security

Select an existing policy rule or select "Add" to create a new one.

In the "Actions" tab in the "Profile Setting" section; in the "Profile Type" field, select "Profiles". The window will change to display the different categories of Profiles.

In the "Actions" tab in the "Profile Setting" section; in the "Antivirus" field, select the configured Antivirus Profile.
Select "OK".

Commit changes by selecting "Commit" in the upper-right corner of the screen.

Select "OK" when the confirmation dialog appears.