CVE-2019-11881

EIP tracks 1 public exploit for CVE-2019-11881. PoCs published by MauroEldritch.

AI-analyzed exploit summary This repository contains a functional Ruby script that exploits CVE-2019-11881, a web parameter tampering vulnerability in Rancher 2.1.4. The script encodes a user-provided message and injects it into the login error message parameter, demonstrating the vulnerability.

A vulnerability exists in Rancher before 2.2.4 in the login component, where the errorMsg parameter can be tampered to display arbitrary content, filtering tags but not special characters or symbols. There's no other limitation of the message, allowing malicious users to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.