dnsmasq: Improper validation of wildcard synthesized NSEC records
Published Jan 23, 2018
7.5
HIGHCVSS 3.0
EPSS 2.65%
Description
A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
Affected products
-
- Version up to and including 2.78StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Simon Kelley | Dnsmasq | n/a |
|
- ≤ 2.78
No data.
Red Hat Enterprise Linux 5
dnsmasq
Not affected
Red Hat Enterprise Linux 6
dnsmasq
Not affected
Red Hat Enterprise Linux 7
dnsmasq
Not affected
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
dnsmasq
Not affected
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
dnsmasq
Not affected
Red Hat OpenStack Platform 10 (Newton)
dnsmasq
Not affected
Red Hat OpenStack Platform 11 (Ocata)
dnsmasq
Not affected
Red Hat OpenStack Platform 12 (Pike)
dnsmasq
Not affected
Red Hat OpenStack Platform 8 (Liberty)
dnsmasq
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
dnsmasq
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 6 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 7 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 11 (Ocata) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 12 (Pike) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | dnsmasq | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Versions of Dnsmasq shipped with Red Hat Enterprise Linux are built without DNSSEC support, so they are not affected by this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L
AV:N/AC:L/Au:N/C:N/I:P/A:N
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 v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.65% (0.02646) | 85.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.70% (0.02697) | 83.92th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.28% (0.00284) | 68.98th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00284) | 67.79th | v3 (v2023.03.01) |
| Jul 26, 2023 | 0.28% (0.00284) | 64.41th | v3 (v2023.03.01) |
| Jun 16, 2023 | 0.27% (0.00269) | 63.11th | v3 (v2023.03.01) |
| May 8, 2023 | 0.40% (0.00400) | 69.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.63% (0.00625) | 75.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v1 |
| Jan 6, 2022 | 0.83% (0.00833) | 23.96th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (8)
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00027.html vendor-advisoryx_refsource_SUSE
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2018q1/011896.html mailing-listx_refsource_MLISTVendor Advisory
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=4fe6744a220eddd3f1749b40cac3dfc510787de6
- http://www.securityfocus.com/bid/102812 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-15107 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1510570 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-15107
- https://www.cve.org/CVERecord?id=CVE-2017-15107
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00027.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2018q1/011896.html | mailing-listx_refsource_MLISTVendor Advisory | |
| http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=4fe6744a220eddd3f1749b40cac3dfc510787de6 | ||
| http://www.securityfocus.com/bid/102812 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-15107 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1510570 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-15107 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-15107 |
Change history (0)
No recorded changes yet.