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CVE-2018-1099

20
FAUCET Score

CVE-2018-1099 is a DNS rebinding vulnerability affecting etcd 3.3.1 and earlier, as well as specific Fedora and Red Hat etcd packages. An attacker can manipulate DNS records to redirect browser requests to localhost, potentially leading to unauthorized actions. With a CVSS score of 5.5 (Medium), this vulnerability has a low attack complexity and requires local privileges, primarily impacting integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current exploitation risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.3.1CPE matchmatch criteria
cpe:2.3:a:redhat:etcd:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 93rd percentile among its peer group of 15,903 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

gopatch availablevia ghsa
Product: go.etcd.io/etcdFixed in: 3.4.0
redhatpatch availablevia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenShift Enterprise 3Fixed in: atomic-openshift
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: etcd
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: etcd3
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: etcd

Vendor Advisories (2)

goGHSA-wf43-55jj-vwq8medium

DNS Rebinding in etcd

Feb 15, 2022
redhatCVE-2018-1099Moderate

etcd: DNS rebinding vulnerability in etcd server

Mar 7, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchVendor Advisory
github.com / coreos/etcd/issues/9353
ExploitThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS