cve/2018/CVE-2018-18709.md

### [CVE-2018-18709](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18709)
![](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

An issue was discovered on Tenda AC7 V15.03.06.44_CN, AC9 V15.03.05.19(6318)_CN, AC10 V15.03.06.23_CN, AC15 V15.03.05.19_CN, and AC18 V15.03.05.19(6318)_CN devices. It is a buffer overflow vulnerability in the router's web server -- httpd. When processing the "firewallEn" parameter for a post request, the value is directly used in a strcpy to a local variable placed on the stack, which overrides the return address of the function.

### POC

#### Reference
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-08/Tenda.md
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-08/Tenda.md

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