Guy Podjarmy - Secure Node Code

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Guy Podjarny, Snyk@guypod

Secure Node Code a.k.a. Stranger Danger

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About Me• Guy Podjarny, @guypod on Twitter

• CEO & Co-founder at Snyk

• History: • Cyber Security part of Israel Defense Forces

• First Web App Firewall (AppShield), Dynamic/Static Tester (AppScan)

• Security: Worked in Sanctum -> Watchfire -> IBM

• Performance: Founded Blaze -> CTO @Akamai

• O’Reilly author, speaker

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Open Source Is AwesomeShare Your Work

Reuse What Others Built Focus on Creating Your Own New Thing

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Open Source Usage Has Exploded

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Open Source != SecureOpen Source != Insecure Either!

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Heartbleed

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Shellshock

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Logjam

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Attackers Are Targeting Open Source

One vulnerability, many victims

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~30% of Docker Hub images carry

Known Vulnerabilities High Priority known vulnerabilites, to be exact

Source: BanyanOps Analysis

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Docker Security

Ubuntu usn

Auto Sec Updates

Fedora yum security

Auto Sec Updates

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That’s OSS Binaries.What about OSS Packages?

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Just as Hacker-Friendly…1. Vulnerabilities already found, and found often 2. Used everywhere - Millions downloads/month, in many orgs 3. Hard to update, due to deps chains, breakage & scattered use

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Let’s pick on Node

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npm Is AWESOME

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>350,000 packages

~6B downloads/month >65,000 publishers

npm usage Has Exploded

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Your App

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Your Code

Your App

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JavaScript has Won

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Each Dependency Is A Security Risk

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Do You Know Which Dependencies

You Have?

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Do you know, for EVERY SINGLE DEPENDENCY

if its developers have any

Security Expertise?

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Do you know, for EVERY SINGLE DEPENDENCY

if it underwent any

Security Testing?

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Do you know, for EVERY SINGLE DEPENDENCY

if it has any

Known Vulnerabilities?

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Open Source is written by People

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Open Source is written by People

Strangers

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Do you know, for EVERY SINGLE CONTRIBUTOR

if they are

Malicious?

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Do you know, for EVERY SINGLE CONTRIBUTOR

if they’ve been

Compromised?

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It’s a BIG ProblemWith no single, silver bullet solution

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First Step: Known Vulnerabilites

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~14% of npm Packages Carry Known Vulnerabilities

~83% of Snyk users found vulns in their apps

Source: Snyk data, Oct 2016

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Software Supply ChainMandatory Josh Corman plug…

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1. How do I protect myself?

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1. How do I protect myself? 2. Can I learn from these vulns?

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Live Hacking Begins…

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JavaScript Takeaways• Consider all encodings

• Notably HTML & URL Encoding

• Better yet: Whitelist instead of Blacklist

• Prevent long algorithm runs • Control Regexp input lengths

• Don’t initialize Buffer with integers

• Beware JSON type manipulations

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OSS Package Vulns are the new

Unpatched servers

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Especially in Serverless/PaaS

https://snyk.io/blog/Serverless-Security-Vulnerabilities/

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OSS packages takeaway• Find vulnerabilities

• Be sure to test ALL your applications

• Fix vulnerabilities • Upgrade when possible, patch when needed

• Prevent adding vulnerable module • Break the build, test in pull requests

• Respond quickly to new vulns • Track vuln DBs, or use Snyk! </shameless plug>

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Not just Node/npmImpacts Open Source Packages, wherever they are

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Open Source Is Awesome

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Open Source Is AwesomePlease Enjoy Responsibly

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Thank You!

Guy Podjarny, Snyk@guypod