The DataPower Gateway providing content filtering must protect against or limit the effects of known and unknown types of Denial of Service (DoS) attacks by employing pattern recognition pre-processors.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-65277	WSDP-AG-000102	SV-79767r1_rule		Medium

Description
If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Installation of content filtering gateways and application layer firewalls at key boundaries in the architecture mitigates the risk of DoS attacks. These attacks can be detected by matching observed communications traffic with patterns of known attacks. Detection components that use pattern recognition pre-processors can detect attacks when signatures for the attack do not exist or are not installed. These attacks include zero-day attacks which are new attacks for which vendors have not yet developed signatures. This requirement applies to the communications traffic functionality of the ALG as it pertains to handling communications traffic, rather than to the ALG device itself.

Description

If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Installation of content filtering gateways and application layer firewalls at key boundaries in the architecture mitigates the risk of DoS attacks. These attacks can be detected by matching observed communications traffic with patterns of known attacks. Detection components that use pattern recognition pre-processors can detect attacks when signatures for the attack do not exist or are not installed. These attacks include zero-day attacks which are new attacks for which vendors have not yet developed signatures. This requirement applies to the communications traffic functionality of the ALG as it pertains to handling communications traffic, rather than to the ALG device itself.

STIG	Date
IBM DataPower ALG Security Technical Implementation Guide	2016-01-21

Details

Check Text ( C-65905r1_chk )
XML DoS Single message attacks: Jumbo Payload, Recursion, Mega Tags, Coercive parsing, Public key; Multiple message: XML flood, Resource hijack. WebGUI Services >> XML Firewall >> Edit XML Firewall XML, Threat Protection tab. AAA DoS Protection against DoS flooding attacks. WebGUI Objects >> XML Processing >> AAA Policy, Main tab. PKCS #7 Document DoS signature-limit protection. WebGUI Objects >> XML Processing >> Processing Action, select Crypto Binary action type. Service level monitor (SLM) policy. WebGUI Objects >> Monitoring >> SLM Policy. If these items are not configured, this is a finding.

Check Text ( C-65905r1_chk )

XML DoS
Single message attacks: Jumbo Payload, Recursion, Mega Tags, Coercive parsing, Public key; Multiple message: XML flood, Resource hijack. WebGUI Services >> XML Firewall >> Edit XML Firewall XML, Threat Protection tab.

AAA DoS
Protection against DoS flooding attacks. WebGUI Objects >> XML Processing >> AAA Policy, Main tab.

PKCS #7
Document DoS signature-limit protection. WebGUI Objects >> XML Processing >> Processing Action, select Crypto Binary action type.

Service level monitor (SLM) policy. WebGUI Objects >> Monitoring >> SLM Policy.

If these items are not configured, this is a finding.

Fix Text (F-71217r1_fix)
XML DoS Single message attacks: Jumbo Payload, Recursion, Mega Tags, Coercive parsing, Public key; Multiple message: XML flood, Resource hijack. WebGUI Services >> XML Firewall >> Edit XML Firewall XML, Threat Protection tab. AAA DoS Protection against DoS flooding attacks. WebGUI Objects >> XML Processing >> AAA Policy, Main tab. PKCS #7 Document DoS signature-limit protection. WebGUI Objects >> XML Processing >> Processing Action, select Crypto Binary action type. Service level monitor (SLM) policy. WebGUI Objects >> Monitoring >> SLM Policy.

Fix Text (F-71217r1_fix)