cve/2016/CVE-2016-2167.md

### [CVE-2016-2167](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2167)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpuoct2020.html

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