CVEs-PoC/2016/CVE-2016-9942.md

### [CVE-2016-9942](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9942)
![](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

Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.

### POC

#### Reference
- https://github.com/LibVNC/libvncserver/pull/137
- https://usn.ubuntu.com/4587-1/

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