💉 Can you inject Redis commands through their note caching system?

A note caching API constructs Redis commands using string concatenation, creating opportunities for CRLF injection attacks. When user input meets insufficient sanitization, even simple note storage can become a pathway to Redis command injection and session manipulation. 🎯 Time to test your protocol injection skills!

1

Flags

5

Points

Challenge

Solution Available

Pro Exclusive

Start Lab Environment

~1-2 min setup

AWS dedicated

Private instance

Industry standard

Flag

+5 points

First Blood by skalvin at 2025-09-04 04:18:47.0

Redis Cache Poisoner

Challenge 5 points

Writeup Guidelines

Share your solution approach, methodology, and insights. Your writeup will be reviewed before being published to the community. Earn +5 bonus points when your writeup is approved!

Requirements:

No flag content: Do not reveal actual flag values or passwords in your writeup
Include lab link: Your writeup must contain a direct link to this lab for reference
Educational focus: Explain your methodology, tools used, and learning insights

Writeup URL *

Link to your blog post, GitHub repository, or any platform where you've published your writeup
Remember to include this lab's URL in your writeup: https://hackerdna.com/labs/redis-cache-poisoner

Language *

Help others find writeups in their preferred language

Confirmation Required

I confirm that my writeup includes a direct link to this lab

Your writeup must reference this lab's URL: https://hackerdna.com/labs/redis-cache-poisoner

I confirm that my writeup does NOT contain flag content or critical information

Do not include actual flags, passwords, or other sensitive information that would spoil the challenge

Labs / Redis Cache Poisoner

💉 Can you inject Redis commands through their note caching system?

Start Lab Environment

First time? Watch this quick tutorial

Flag