In version 1.1. of the PCI DSS (Payment Card Industry Data Security Standard), there are requirements for securing the application layer of a credit card handler's information system. This is a great step forward, imo, as it will address the layer with the majority of defects (finally) since we continue to write and buy insecure software.
However, there is a clause in requirement section #6 that states that PCI compliant systems must "ensure that all web-facing applications are protected against known attacks by applying either of the following methods:
- Having all custom application code reviewed for common vulnerabilities by an organization that specializes in application security
- Installing an application layer firewall in front of web-facing applications."
Can someone explain to me how the PCI Security Standards Council views these as acceptable replacements for one another?
I'm all in favor of utilizing web application firewalls (WAF) but they are no replacement for a good solid code review. Not to mention the mixed metaphor of whitebox (code review) vs black box (WAF) mitigation strategies.
What company wouldn't choose the WAF? I certainly would as the standard currently reads -- it would probably be less expensive than a custom code review, it is persistent, and it meets the requirement.
This requirement is currently considered a "best practice" by the PCI Standards Council; however, come June 2008, it will be a requirement and all companies must pass it to be PCI compliant.
I must be missing _something here!
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You aren't missing anything. They havent got a clue about security. You can even downlaod their standard and bypass the EULA by direct browsing
I think someone at the PCI council has money via a VC or something in the WAF market!
This is a grear critic of it BTW
http://securitybuddha.com/2007/02/27/were-tjx-pci-compliant-the-blood-hounds-are-on-the-wrong-scent/
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This is a classic example of secure-on-paper versus secure-in-reality. Don't get me wrong, I applaud the "theoretical" efforts of ensuring due diligence as it pertains to security - but we need to make sure that what we are asking of vendors is in fact due dilegence and not butt-covering activities.
I recently took the exam to become a Qualified Security Assessor for my company, and during the training course I had the same question about this requirement. The best part about the PCI requirements is that they are highly prescriptive with most testpoints being binary. The same holds true for this requirement, only the 2 options are not equivalent.
I think this requirement is too vague as currently defined. If they truly want to prevent against known application attacks, they should have researched the topic further before wirting the test requirement.
allenparker75@yahoo.com
Sorry, I think another way!
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