Support HackTricks and get benefits! - Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)! - Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family) - Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com) - **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.** - **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
# Protocol Information **Memcached** (pronunciation: mem-cashed, mem-cash-dee) is a general-purpose distributed [memory caching](https://en.wikipedia.org/wiki/Memory\_caching) system. It is often used to speed up dynamic database-driven websites by caching data and objects in RAM to reduce the number of times an external data source (such as a database or API) must be read. (From [wikipedia](https://en.wikipedia.org/wiki/Memcached))\ Although Memcached supports SASL, most instances are **exposed without authentication**. **Default port:** 11211 ``` PORT STATE SERVICE 11211/tcp open unknown ``` # Enumeration ## Manual To ex-filtrate all the information saved inside a memcache instance you need to: 1. Find **slabs** with **active items** 2. Get the **key names** of the slabs detected before 3. Ex-filtrate the **saved data** by **getting the key names** Remember that this service is just a **cache**, so **data may be appearing and disappearing**. ```bash echo "version" | nc -vn -w 1 11211 #Get version echo "stats" | nc -vn -w 1 11211 #Get status echo "stats slabs" | nc -vn -w 1 11211 #Get slabs echo "stats items" | nc -vn -w 1 11211 #Get items of slabs with info echo "stats cachedump 0" | nc -vn -w 1 11211 #Get key names (the 0 is for unlimited output size) echo "get " | nc -vn -w 1 11211 #Get saved info #This php will just dump the keys, you need to use "get later" sudo apt-get install php-memcached php -r '$c = new Memcached(); $c->addServer("localhost", 11211); var_dump( $c->getAllKeys() );' ``` ## Manual2 ```bash sudo apt install libmemcached-tools memcstat --servers=127.0.0.1 #Get stats memcdump --servers=127.0.0.1 #Get all items memccat --servers=127.0.0.1 #Get info inside the item(s) ``` ## Automatic ```bash nmap -n -sV --script memcached-info -p 11211 #Just gather info msf > use auxiliary/gather/memcached_extractor #Extracts saved data msf > use auxiliary/scanner/memcached/memcached_amp #Check is UDP DDoS amplification attack is possible ``` ## **Shodan** * `port:11211 "STAT pid"` * `"STAT pid"`
Support HackTricks and get benefits! - Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)! - Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family) - Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com) - **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.** - **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**