A SQL injection vulnerability exists in Cachet prior to and including version 2.3.18, specifically in the SearchableTrait#scopeSearch() function. This flaw allows unauthenticated attackers to inject arbitrary SQL queries, enabling exfiltration of sensitive database contents such as administrator passwords and session data. The vulnerability affects both the stable 2.3.18 release and the 2.4 development branch. The upstream repository is no longer actively maintained.
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This repository contains a Python exploit script (exploit.py) targeting CVE-2021-39165, a time-based blind SQL injection vulnerability in Cachet versions up to 2.3.18 and 2.4.0-dev. The exploit automates the process of testing for the vulnerability, checking if a specified user exists, determining the length of the user's password hash, and extracting the hash one character at a time by leveraging time delays in SQL queries. The main attack vector is a crafted GET request to the /api/v1/components endpoint, exploiting the 'name' parameter. The script requires the target URL and optionally a username and sleep time. The repository also includes a requirements.txt for dependencies (requests, validators) and a README.md with usage and references. The exploit is operational and provides a practical method for extracting password hashes from vulnerable Cachet instances.
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