cve/2024/CVE-2024-3096.md

### [CVE-2024-3096](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-3096)
![](https://img.shields.io/static/v1?label=Product&message=PHP&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%20Improper%20Input%20Validation&color=brighgreen)

### Description

In PHP  version 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, if a password stored with password_hash() starts with a null byte (\x00), testing a blank string as the password via password_verify() will incorrectly return true.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2024/04/12/11
- https://github.com/php/php-src/security/advisories/GHSA-h746-cjrr-wfmr

#### Github
- https://github.com/Symbolexe/SHIFU
- https://github.com/fkie-cad/nvd-json-data-feeds