Access Controls
etcd creates certain directory paths (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not perform any permission checks when a given directory path exists already.
github.com/etcd-io/etcd/pkg/fileutil
Make sure these directories have the desired permit (700).
Find out more on this vulnerability in the security audit report
If you have any questions or comments about this advisory: * Contact the etcd security committee