cve/2013/CVE-2013-6440.md

### [CVE-2013-6440](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6440)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The (1) BasicParserPool, (2) StaticBasicParserPool, (3) XML Decrypter, and (4) SAML Decrypter in Shibboleth OpenSAML-Java before 2.6.1 set the expandEntityReferences property to true, which allows remote attackers to conduct XML external entity (XXE) attacks via a crafted XML DOCTYPE declaration.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpujan2022.html

#### Github
- https://github.com/auditt7708/rhsecapi