cve/2017/CVE-2017-18926.md

### [CVE-2017-18926](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18926)
![](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

raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptor_qname_format_as_xml).

### POC

#### Reference
- https://www.openwall.com/lists/oss-security/2017/06/07/1

#### Github
- https://github.com/Live-Hack-CVE/CVE-2017-18926