cve/2019/CVE-2019-15903.md

### [CVE-2019-15903](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15903)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

### POC

#### Reference
- http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html
- http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html
- http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html
- https://github.com/libexpat/libexpat/pull/318
- https://usn.ubuntu.com/4132-1/
- https://usn.ubuntu.com/4202-1/
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html

#### Github
- https://github.com/Anna-Rafaella/Conteneurisation
- https://github.com/fokypoky/places-list
- https://github.com/fredrkl/trivy-demo
- https://github.com/n0-traces/cve_monitor