Multiple Vendor DNS Query ID Field Prediction Cache Poisoning

High Nessus Plugin ID 33447


The remote name resolver (or the server it uses upstream) is affected by a DNS cache poisoning vulnerability.


The remote DNS resolver does not use random ports when making queries to third-party DNS servers. An unauthenticated, remote attacker can exploit this to poison the remote DNS server, allowing the attacker to divert legitimate traffic to arbitrary sites.


Contact your DNS server vendor for a patch.

See Also

Plugin Details

Severity: High

ID: 33447

File Name: dns_non_random_source_ports.nasl

Version: 1.34

Type: remote

Family: DNS

Published: 2008/07/09

Updated: 2018/11/15

Dependencies: 10539

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.4

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Required KB Items: DNS/recursive_queries

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2008/07/08

Reference Information

CVE: CVE-2008-1447

BID: 30131

CERT: 800113

IAVA: 2008-A-0045

EDB-ID: 6122, 6123, 6130