cve/2024/CVE-2024-34340.md

### [CVE-2024-34340](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-34340)
![](https://img.shields.io/static/v1?label=Product&message=cacti&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3C%201.2.27%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-287%3A%20Improper%20Authentication&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-697%3A%20Incorrect%20Comparison&color=brighgreen)

### Description

Cacti provides an operational monitoring and fault management framework. Prior to version 1.2.27, Cacti calls `compat_password_hash` when users set their password. `compat_password_hash` use `password_hash` if there is it, else use `md5`. When verifying password, it calls `compat_password_verify`. In `compat_password_verify`, `password_verify` is called if there is it, else use `md5`. `password_verify` and `password_hash` are supported on PHP < 5.5.0, following PHP manual. The vulnerability is in `compat_password_verify`. Md5-hashed user input is compared with correct password in database by `$md5 == $hash`. It is a loose comparison, not `===`. It is a type juggling vulnerability. Version 1.2.27 contains a patch for the issue.

### POC

#### Reference
- https://github.com/Cacti/cacti/security/advisories/GHSA-37x7-mfjv-mm7m
- https://github.com/Cacti/cacti/security/advisories/GHSA-37x7-mfjv-mm7m

#### Github
No PoCs found on GitHub currently.