CVEs-PoC/2020/CVE-2020-25686.md

### [CVE-2020-25686](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25686)
![](https://img.shields.io/static/v1?label=Product&message=dnsmasq&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-358&color=brighgreen)

### Description

A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/AZ-X/pique
- https://github.com/CVEDB/PoC-List
- https://github.com/CVEDB/awesome-cve-repo
- https://github.com/CVEDB/top
- https://github.com/DNTYO/F5_Vulnerability
- https://github.com/EdgeSecurityTeam/Vulnerability
- https://github.com/GhostTroops/TOP
- https://github.com/JERRY123S/all-poc
- https://github.com/SexyBeast233/SecBooks
- https://github.com/criminalip/CIP-NSE-Script
- https://github.com/cyberanand1337x/bug-bounty-2022
- https://github.com/developer3000S/PoC-in-GitHub
- https://github.com/hktalent/TOP
- https://github.com/jbmihoub/all-poc
- https://github.com/kaosagnt/ansible-everyday
- https://github.com/klcheung99/CSCM28CW2
- https://github.com/knqyf263/dnspooq
- https://github.com/mboukhalfa/multironic
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/tzwlhack/Vulnerability
- https://github.com/weeka10/-hktalent-TOP