cve/2023/CVE-2023-26438.md

### [CVE-2023-26438](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-26438)
![](https://img.shields.io/static/v1?label=Product&message=OX%20App%20Suite&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%3D%207.10.6-rev42%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-918%20Server-Side%20Request%20Forgery%20(SSRF)&color=brighgreen)

### Description

External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.

### POC

#### Reference
- http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html

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