What’s Vulnerable › Vulnerabilities

CVE-2016-9778: An error handling certain queries using the nxdomain-redirect feature could cause a REQUIRE assertion failure in db.c

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-01-16 · updated 2026-06-17
• Weakness: CWE-388

Description

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.

Affected products

• ISC BIND: 9.9.8-s1, 9.9.8-s2, 9.9.8-s3, 9.9.9-s1, 9.9.9-s6, 9.11.0 (+1)
• NetApp Data Ontap Edge: all versions
• NetApp Solidfire Element Os Management Node: all versions

References

• http://www.securityfocus.com/bid/95388
• http://www.securitytracker.com/id/1037582
• https://kb.isc.org/article/AA-01442/
• https://security.gentoo.org/glsa/201708-01
• https://security.netapp.com/advisory/ntap-20180926-0005/
• http://www.securityfocus.com/bid/95388
• http://www.securitytracker.com/id/1037582
• https://kb.isc.org/article/AA-01442/
• https://security.gentoo.org/glsa/201708-01
• https://security.netapp.com/advisory/ntap-20180926-0005/

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