CVE-2018-16886: GO-2021-0077 - Authentication bypass in go.etcd.io/etcd

CVE-2018-16886 · Severity: low · CVSS 3.1 · Published 2021-04-14

Authentication bypass in go.etcd.io/etcd

Technologies: go.etcd.io/etcd (Go), go.etcd.io/etcd/v3 (Go). Vendors: Go.

Quick answers

Is CVE-2018-16886 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2018-16886 being exploited in the wild.
How severe is CVE-2018-16886?
Low severity, with a CVSS score of 3.1, published 14 April 2021.
Which products and versions are affected?
go.etcd.io/etcd (Go) SEMVER:introduced=0,fixed=0.5.0-alpha.5.0.20190108173120-83c051b701d3; go.etcd.io/etcd/v3 (Go) SEMVER:introduced=3.2.0,fixed=3.2.26.
Is there a fix for CVE-2018-16886?
Yes. go.etcd.io/etcd (Go): upgrade to 0.5.0-alpha.5.0.20190108173120-83c051b701d3 or later; go.etcd.io/etcd/v3 (Go): upgrade to 3.2.26 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2018-16886?
Check whether you run go.etcd.io/etcd (Go) or go.etcd.io/etcd/v3 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • go.etcd.io/etcd (Go): upgrade to 0.5.0-alpha.5.0.20190108173120-83c051b701d3 or later
    go get go.etcd.io/etcd@v0.5.0-alpha.5.0.20190108173120-83c051b701d3
  • go.etcd.io/etcd/v3 (Go): upgrade to 3.2.26 or later
    go get go.etcd.io/etcd/v3@v3.2.26

Affected products

  • go.etcd.io/etcd (Go) SEMVER:introduced=0,fixed=0.5.0-alpha.5.0.20190108173120-83c051b701d3
  • go.etcd.io/etcd/v3 (Go) SEMVER:introduced=3.2.0,fixed=3.2.26

Identifiers

  • CVE-2018-16886
  • GHSA-h6xx-pmxh-3wgp
  • GO-2021-0077

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