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Red Hat: CVE-2018-16886: Moderate: etcd security, bug fix, and enhancement update (RHSA-2019:0237)

Severity CVSS Published Added Modified
7 (AV:N/AC:M/Au:N/C:P/I:P/A:P) January 14, 2019 February 01, 2019 February 15, 2019

Description

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.

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References

Solution

redhat-upgrade-etcd