HIGH8.1
GHSA-h6xx-pmxh-3wgp
go.etcd.io/etcd Authentication Bypass
Quick fix
GHSA-h6xx-pmxh-3wgp — go.etcd.io/etcd/v3: upgrade to the fixed version with the command below.
go get go.etcd.io/etcd/v3@v3.2.26Details
etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.
Are you affected?
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Affected packages
Go/go.etcd.io/etcd
Introduced in:
0Fixed in: 0.5.0-alpha.5.0.20190108173120-83c051b701d3Fix
go get go.etcd.io/etcd@v0.5.0-alpha.5.0.20190108173120-83c051b701d3References
- https://nvd.nist.gov/vuln/detail/CVE-2018-16886[ADVISORY]
- https://github.com/etcd-io/etcd/pull/10366[WEB]
- https://github.com/etcd-io/etcd/commit/0191509637546621d6f2e18e074e955ab8ef374d[WEB]
- https://github.com/etcd-io/etcd/commit/bf9d0d8291dc71ecbfb2690612954e1a298154b2[WEB]
- https://access.redhat.com/errata/RHSA-2019:0237[WEB]
- https://access.redhat.com/errata/RHSA-2019:1352[WEB]
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886[WEB]
- https://github.com/etcd-io/etcd[PACKAGE]
- https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication[WEB]
- https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication[WEB]
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4[WEB]
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS[WEB]
- https://pkg.go.dev/vuln/GO-2021-0077[WEB]
- http://www.securityfocus.com/bid/106540[WEB]