An error handling certain queries using the nxdomain-redirect feature could cause a REQUIRE assertion failure in db.c
Published Jan 16, 2019
7.5
HIGHCVSS 3.0
EPSS 6.84%
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
-
- Version BIND 9 9.9.8-S1 -> 9.9.8-S3, 9.9.9-S1 -> 9.9.9-S6, 9.11.0-9.11.0-P1StatusaffectedConstraints-
- Version
Configuration 1
Configuration 2
- n/a
- n/a
No data.
Red Hat Enterprise Linux 5
bind
Not affected
Red Hat Enterprise Linux 5
bind97
Not affected
Red Hat Enterprise Linux 6
bind
Not affected
Red Hat Enterprise Linux 7
bind
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 5 | bind97 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 7 | bind | Not affected | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to the patched release most closely related to your current version of BIND. These can be downloaded from http://www.isc.org/downloads.
BIND 9 version 9.11.0-P2
BIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.
BIND 9.9.9-S7
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (CVE.org) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.84% (0.06843) | 93.83th | v5 (v2026.06.15) |
| Jun 23, 2026 | 6.79% (0.06787) | 93.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 12.00% (0.12002) | 95.58th | v5 (v2026.06.15) |
| Apr 15, 2026 | 5.42% (0.05420) | 90.16th | v4 (v2025.03.14) |
| Feb 3, 2026 | 6.61% (0.06614) | 91.01th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.62% (0.08615) | 91.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 14.68% (0.14683) | 90.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.62% (0.08615) | 91.79th | v4 (v2025.03.14) |
| Dec 26, 2024 | 3.52% (0.03520) | 91.41th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.03% (0.02034) | 89.41th | v3 (v2023.03.01) |
| Jun 23, 2024 | 1.44% (0.01444) | 86.69th | v3 (v2023.03.01) |
| Feb 8, 2024 | 2.03% (0.02034) | 88.55th | v3 (v2023.03.01) |
| Jan 10, 2024 | 4.63% (0.04632) | 91.73th | v3 (v2023.03.01) |
| Jun 14, 2023 | 4.21% (0.04211) | 91.01th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.41% (0.04414) | 91.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.63% (0.01626) | 75.89th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.63% (0.01626) | 75.84th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.63% (0.01626) | 73.79th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.63% (0.01626) | 52.68th | v2 (v2022.01.01) |
References (10)
- http://www.securityfocus.com/bid/95388 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037582 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2016-9778 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1411387 Issue Tracking
- https://kb.isc.org/article/AA-01442/ x_refsource_CONFIRMVendor Advisory
- https://kb.isc.org/article/AA-01442/0
- https://nvd.nist.gov/vuln/detail/CVE-2016-9778
- https://security.gentoo.org/glsa/201708-01 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.netapp.com/advisory/ntap-20180926-0005/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-9778
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/95388 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1037582 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2016-9778 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1411387 | Issue Tracking | |
| https://kb.isc.org/article/AA-01442/ | x_refsource_CONFIRMVendor Advisory | |
| https://kb.isc.org/article/AA-01442/0 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2016-9778 | ||
| https://security.gentoo.org/glsa/201708-01 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://security.netapp.com/advisory/ntap-20180926-0005/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2016-9778 |
Change history (0)
No recorded changes yet.