BIND Supported Preview Edition can exit with an assertion failure if nxdomain-redirect is used
Published Oct 9, 2019
7.5
HIGHCVSS 3.1
EPSS 2.56%
Description
In BIND Supported Preview Edition, an error in the nxdomain-redirect feature can occur in versions which support EDNS Client Subnet (ECS) features. In those versions which have ECS support, enabling nxdomain-redirect is likely to lead to BIND exiting due to assertion failure. Versions affected: BIND Supported Preview Edition version 9.10.5-S1 -> 9.11.5-S5. ONLY BIND Supported Preview Edition releases are affected.
Affected products
-
- Version BIND 9 9.10.5-S1 -> 9.11.5-S5StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ISC | BIND 9 Supported Preview Edition | 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
Red Hat Enterprise Linux 8
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 |
| Red Hat Enterprise Linux 8 | 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:
BIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.
+ BIND 9.11.5-S6 + BIND 9.11.6-S1
Red Hat statement
This issue only affects the special feature preview branch of bind. Bind packages shipped with Red Hat Enterprise Linux are not affected by this flaw.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.56% (0.02560) | 84.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.14% (0.03144) | 86.20th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.06% (0.01057) | 75.61th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.70% (0.02695) | 76.41th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.11% (0.00112) | 45.15th | v3 (v2023.03.01) |
| Jul 3, 2024 | 0.11% (0.00112) | 45.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00112) | 43.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v5 (v2026.06.15) |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Sep 1, 2021 | 0.62% (0.00624) | 45.04th | v1 |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2019-6468 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1702642 Issue Tracking
- https://kb.isc.org/docs/cve-2019-6468 x_refsource_CONFIRMThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-6468
- https://www.cve.org/CVERecord?id=CVE-2019-6468
- https://www.synology.com/security/advisory/Synology_SA_19_20 x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-6468 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1702642 | Issue Tracking | |
| https://kb.isc.org/docs/cve-2019-6468 | x_refsource_CONFIRMThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-6468 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-6468 | ||
| https://www.synology.com/security/advisory/Synology_SA_19_20 | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.