CVE-2018-1099 DNS Rebinding in etcd

What is CVE-2018-1099?

CVE-2018-1099 is a medium-severity server-side request forgery vulnerability in Fedoraproject Fedora, published on 3 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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).

Weakness: CWE-20

Which versions are affected by CVE-2018-1099?

2 open source packages ship an affected version, including go.etcd.io/etcd. It affects 2 products.

Products include Fedoraproject Fedora, Redhat Etcd.

How do I fix CVE-2018-1099?

Upgrade go.etcd.io/etcd to 3.4.0 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2018-1099 being exploited?

There is no known exploitation of CVE-2018-1099 in the wild and no public exploit code.

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• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLEANSTART-2026-NI80451, DEBIAN-CVE-2018-1099, GHSA-wf43-55jj-vwq8, UBUNTU-CVE-2018-1099.