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CVE-2020-25686

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/cve-scores

- 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/gon-sui/dns-pooq-demo

- 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