CVE-2016-9778

high-risk
Published 2019-01-16

An error in handling certain queries can cause an assertion failure when a server is using the nxdomain-redirect feature to cover a zone for which it is also providing authoritative service. A vulnerable server could be intentionally stopped by an attacker if it was using a configuration that met the criteria for the vulnerability and if the attacker could cause it to accept a query that possessed the required attributes. Please note: This vulnerability affects the "nxdomain-redirect" feature, which is one of two methods of handling NXDOMAIN redirection, and is only available in certain versions of BIND. Redirection using zones of type "redirect" is not affected by this vulnerability. Affects BIND 9.9.8-S1 -> 9.9.8-S3, 9.9.9-S1 -> 9.9.9-S6, 9.11.0-9.11.0-P1.

Do I need to act?

~
6.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (9)

Solidfire Element Os Management Node

Affected Vendors

Isc Netapp

References (10)

Third Party Advisory http://www.securityfocus.com/bid/95388
Third Party Advisory http://www.securitytracker.com/id/1037582
Vendor Advisory https://kb.isc.org/article/AA-01442/
Third Party Advisory https://security.gentoo.org/glsa/201708-01
Third Party Advisory https://security.netapp.com/advisory/ntap-20180926-0005/
Third Party Advisory http://www.securityfocus.com/bid/95388
Third Party Advisory http://www.securitytracker.com/id/1037582
Vendor Advisory https://kb.isc.org/article/AA-01442/
Third Party Advisory https://security.gentoo.org/glsa/201708-01
Third Party Advisory https://security.netapp.com/advisory/ntap-20180926-0005/
50
/ 100
high-risk
Severity 26/34 · High
Exploitability 9/34 · Low
Exposure 15/34 · Moderate