CVEs-PoC/2020/CVE-2020-13995.md

### [CVE-2020-13995](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13995)
![](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

U.S. Air Force Sensor Data Management System extract75 has a buffer overflow that leads to code execution. An overflow in a global variable (sBuffer) leads to a Write-What-Where outcome. Writing beyond sBuffer will clobber most global variables until reaching a pointer such as DES_info or image_info. By controlling that pointer, one achieves an arbitrary write when its fields are assigned. The data written is from a potentially untrusted NITF file in the form of an integer. The attacker can gain control of the instruction pointer.

### POC

#### Reference
- https://www.riverloopsecurity.com/blog/2020/09/nitf-extract75-cve-2020-13995/

#### Github
- https://github.com/dbrumley/extract75-cve-2020-13995