### [CVE-2017-14496](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14496)
![](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

Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.

### POC

#### Reference
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- https://www.exploit-db.com/exploits/42946/

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/introspection-libc/main
- https://github.com/introspection-libc/safe-libc
- https://github.com/lnick2023/nicenice
- https://github.com/pekd/safe-libc
- https://github.com/qazbnm456/awesome-cve-poc
- https://github.com/xbl3/awesome-cve-poc_qazbnm456