etcd: DNS rebinding vulnerability in etcd server
Published Apr 3, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.50%
Description
DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).
Affected products
-
- Version 3.3.1 and earlierStatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Red Hat, Inc. | Etcd | n/a |
|
Configuration 2
- 30
No data.
Red Hat Enterprise Linux 7
etcd
Will not fix
Red Hat Enterprise Linux 7
etcd3
Will not fix
Red Hat OpenShift Enterprise 3
atomic-openshift
Affected
Red Hat Storage 3
etcd
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | etcd | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | etcd3 | Will not fix | n/a |
| Red Hat OpenShift Enterprise 3 | atomic-openshift | Affected | n/a |
| Red Hat Storage 3 | etcd | Will not fix | n/a |
go.etcd.io/etcd
Go
Introduced 0 Fixed 3.4.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | go.etcd.io/etcd | 0 | 3.4.0 |
Remediation
Red Hat mitigation
Configure and enable authentication on the etcd server or secure your client connection via HTTPS.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/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:R/S:U/C:L/I:L/A:L
AV:L/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 v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.50% (0.00495) | 40.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.51% (0.00512) | 39.36th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.15% (0.00151) | 33.11th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00068) | 31.74th | v3 (v2023.03.01) |
| Jun 28, 2024 | 0.07% (0.00068) | 29.85th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.07% (0.00068) | 27.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.10% (0.01105) | 29.18th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.10% (0.01105) | 0.00th | v1 |
References (11)
- https://access.redhat.com/security/cve/CVE-2018-1099 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1552717 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- https://github.com/advisories/GHSA-wf43-55jj-vwq8 Advisory
- https://github.com/coreos/etcd/commit/a7e5790c82039945639798ae9a3289fe787f5e56
- https://github.com/coreos/etcd/issues/9353 x_refsource_CONFIRMExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/
- https://nvd.nist.gov/vuln/detail/CVE-2018-1099
- https://www.cve.org/CVERecord?id=CVE-2018-1099
Change history (0)
No recorded changes yet.