cve/2022/CVE-2022-25235.md

### [CVE-2022-25235](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-25235)
![](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

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpuapr2022.html

#### Github
- https://github.com/ARGOeu-Metrics/secmon-probes
- https://github.com/ARGOeu/secmon-probes
- https://github.com/ARPSyndicate/cvemon
- https://github.com/EGI-Federation/SVG-advisories
- https://github.com/NaInSec/CVE-PoC-in-GitHub
- https://github.com/SYRTI/POC_to_review
- https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-25235
- https://github.com/WhooAmii/POC_to_review
- https://github.com/fokypoky/places-list
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/manas3c/CVE-POC
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/rootameen/vulpine
- https://github.com/trhacknon/Pocingit
- https://github.com/whoforget/CVE-POC
- https://github.com/youwizard/CVE-POC
- https://github.com/zecool/cve