ISC BIND 9.7.1 - 9.7.2-P3 IXFR /DDNS Update Combinded with High Query Rate DoS

High Nessus Network Monitor Plugin ID 5803


The remote DNS server is vulnerable to a denial of service attack.


The remote host is running Bind, a popular name server. Versions of Bind 9.7.1-9.7.2-P3 are affected by a denial of service vulnerability. There is a small window of time after an authoritative server processes a successful IXFR transfer or a dynamic update during which the IXFR / update coupled with a query may cause a deadlock to occur. A server experiencing a high query and/or update rate will have a higher chance of being deadlocked.


Upgrade to BIND 9.7.3 or later.

See Also

Plugin Details

Severity: High

ID: 5803

File Name: 5803.prm

Family: DNS Servers

Published: 2011/02/24

Modified: 2016/11/23

Dependencies: 1003

Nessus ID: 52158

Risk Information

Risk Factor: High


Base Score: 7.1

Temporal Score: 5.9

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

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


Base Score: 5.8

Temporal Score: 5.3


Temporal Vector: CVSS3#E:F/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 2011/02/15

Vulnerability Publication Date: 2011/02/22

Reference Information

CVE: CVE-2011-0414

BID: 46491