CVE-2016-9778
HIGHEPSS 93th pctlDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
High risk: more likely to be exploited than 93% of all known CVEs.
References
Related Vulnerabilities
Other CWE-388 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-1002105 | Critical | 9.8 | 87% | - | Fix |
| CVE-2016-8745 | High | 7.5 | 16% | - | Fix |
| CVE-2018-0155 | High | 8.6 | 7.8% | KEV | - |
| CVE-2014-9841 | Critical | 9.8 | 3.9% | - | Fix |
| CVE-2014-9826 | Critical | 9.8 | 3.7% | - | Fix |
| CVE-2017-5401 | Critical | 9.8 | 3.1% | - | Fix |
Common questions
How do I fix CVE-2016-9778?
No published fix for CVE-2016-9778 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2016-9778 being actively exploited?
Not that we know of. CVE-2016-9778 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 6.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 93% of all scored CVEs.
How severe is CVE-2016-9778?
CVE-2016-9778 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.