published August 12, 2021
⚠️ A sneaky oversight in the Oauth extension for MediaWiki leaves RSA keys vulnerable! It turns out there's no limit to how long those keys can be, and MySQL might not like it! Think of it like a postal service that can't manage large packages—if you send a gigantic box through a small opening, things are bound to get messy! Without the right size check, your precious data might just spill out into the ether! An attacker could exploit this issue to create disarray, potentially resulting in malformed data being stored in your database or, even worse, causing it to crash. While the immediate risk of exploitation is low, the chaos it could bring is definitely something to watch out for!
Think of it like a postal service that can't manage large packages—if you send a gigantic box through a small opening, things are bound to get messy! Without the right size check, your precious data might just spill out into the ether! This vulnerability arises from the MWOAuthConsumerSubmitControl.php file not validating the length of RSA keys before attempting to store them in a MySQL blob, leading to potential unexpected behavior.
An attacker could exploit this issue to create disarray, potentially resulting in malformed data being stored in your database or, even worse, causing it to crash. While the immediate risk of exploitation is low, the chaos it could bring is definitely something to watch out for! To protect against this vulnerability, immediately check that you’re running MediaWiki version 1.35.2 or higher, where this issue is fixed. It's also a good idea to audit your applications for any unusually long RSA keys that could cause issues! You've got this! Stay proactive and you'll keep your systems in tip-top shape! 🛡️