GitHub

java.lang.IllegalStateException: getWriter() has already been called for this response

at org.apache.catalina.connector.Response.getOutputStream(Response.java:746) at org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:206 ...
ZDNet

Security warning: New zero-day in the Log4j Java library is already being exploited

A newly discovered zero-day vulnerability in the widely used Java logging library Apache Log4j is easy to exploit and enables attackers to gain full control of affected servers. Tracked as ...