Microsoft DNS Server Inverse Query Buffer Over-Read

medium Nessus Plugin ID 90149
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The DNS server running on the remote host has enabled inverse query.


The Microsoft DNS server running on the remote host has inverse query functionality enabled. It is, therefore, affected by a buffer over-read error in the dns.exe!answerIQuery() function due to a failure to correctly parse the Resource Record in an inverse query packet. An unauthenticated, remote attacker can exploit this to cause a denial of service or to disclose information.


Remove or set the Windows REG_DWORD registry key 'HKLM\System\CurrentControlSet\Services\DNS\Parameters\ EnableIQueryResponseGeneration' to zero.

See Also

Plugin Details

Severity: Medium

ID: 90149

File Name: ms_dns_iquery_buffer_overread.nasl

Version: 1.3

Type: remote

Family: DNS

Published: 3/24/2016

Updated: 11/19/2019

Dependencies: dns_version.nasl, os_fingerprint.nasl

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: AV:N/AC:H/Au:N/C:P/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/23/2016

Reference Information

CVE: CVE-2016-82007