### [CVE-2021-43722](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43722)
![](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

D-Link DIR-645 1.03 A1 is vulnerable to Buffer Overflow. The hnap_main function in the cgibin handler uses sprintf to format the soapaction header onto the stack and has no limit on the size.

### POC

#### Reference
- https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md
- https://www.dlink.com/en/security-bulletin/

#### Github
No PoCs found on GitHub currently.