cve/2020/CVE-2020-25684.md

CVE-2020-25684

Description

A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, 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/Live-Hack-CVE/CVE-2020-25685
• 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