Jerry He created HBASE-13085: -------------------------------- Summary: Security issue in the implementatoin of Rest gataway 'doAs' proxy user support Key: HBASE-13085 URL: https://issues.apache.org/jira/browse/HBASE-13085 Project: HBase Issue Type: Bug Components: REST, security Affects Versions: 0.98.10, 1.0.0, 2.0.0 Reporter: Jerry He Assignee: Jerry He Priority: Critical
When 'hbase.rest.support.proxyuser' is turned on, HBase Rest gateway support 'doAs' proxy user from the Rest client. The current implementation checks to see if the 'rest server user' is authorized to impersonate the 'doAs' user (the user in the 'doAs' Rest query string). {code} if (doAsUserFromQuery != null) { Configuration conf = servlet.getConfiguration(); if (!servlet.supportsProxyuser()) { throw new ServletException("Support for proxyuser is not configured"); } UserGroupInformation ugi = servlet.getRealUser(); // create and attempt to authorize a proxy user (the client is attempting // to do proxy user) ugi = UserGroupInformation.createProxyUser(doAsUserFromQuery, ugi); // validate the proxy user authorization try { ProxyUsers.authorize(ugi, request.getRemoteAddr(), conf); } catch(AuthorizationException e) { throw new ServletException(e.getMessage()); } servlet.setEffectiveUser(doAsUserFromQuery); } {code} The current implementation allows anyone from the rest client side to impersonate another user by 'doAs'. For example, potentially, 'user1' can 'doAs=admin' The correct implementation should check to see if the rest client user is authorized to do impersonation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)