dnsmasq: Improper bounds checking leads to a buffer overread
Published Aug 1, 2019
7.5
HIGHCVSS 3.1
EPSS 1.70%
Description
Improper bounds checking in Dnsmasq before 2.76 allows an attacker controlled DNS server to send large DNS packets that result in a read operation beyond the buffer allocated for the packet, a different vulnerability than CVE-2017-14491.
Affected products
No data.
Configuration 1
- < 2.76
Configuration 2
- 8.0
No data.
Red Hat Enterprise Linux 7
dnsmasq-0:2.76-2.el7
Fixed · RHBA-2017:2117
Red Hat Enterprise Linux 5
dnsmasq
Not affected
Red Hat Enterprise Linux 6
dnsmasq
Not affected
Red Hat Enterprise Linux 8
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 13 (Queens)
dnsmasq
Not affected
Red Hat OpenStack Platform 14 (Rocky)
dnsmasq
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
dnsmasq
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | dnsmasq-0:2.76-2.el7 | Fixed | RHBA-2017:2117 |
| Red Hat Enterprise Linux 5 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 6 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 8 | 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 13 (Queens) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 14 (Rocky) | 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
This issue does not affect the versions of dnsmasq as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8. In Red Hat OpenStack Platform, which currently supports Red Hat Enterprise Linux 7.7, the dnsmasq package is pulled directly from the rhel-7-server-rpms channel. Red Hat OpenStack Platform is therefore unaffected, but please ensure that the underlying Red Hat Enterprise Linux dnsmasq package is current.
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
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 3, 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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.70% (0.01705) | 76.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.70% (0.01705) | 74.22th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00106) | 43.61th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.11% (0.00106) | 42.14th | v3 (v2023.03.01) |
| May 8, 2023 | 0.13% (0.00129) | 46.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00106) | 41.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | 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 | v1 |
| 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-2019-14513 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1739422 Issue Tracking
- https://github.com/Slovejoy/dnsmasq-pre2.76 x_refsource_MISCExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00013.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-14513
- https://www.cve.org/CVERecord?id=CVE-2019-14513
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-14513 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1739422 | Issue Tracking | |
| https://github.com/Slovejoy/dnsmasq-pre2.76 | x_refsource_MISCExploitThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/09/msg00013.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-14513 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-14513 |
Change history (0)
No recorded changes yet.