Bug 1217474 (CVE-2023-43123)

On unix-like systems, the temporary directory is shared between all user. As
such, writing to this directory using APIs that do not explicitly set the
file/directory permissions can lead to information disclosure. Of note, this
does not impact modern MacOS Operating Systems.

The method File.createTempFile on unix-like systems creates a file with
predefined name (so easily identifiable) and by default will create this file
with the permissions -rw-r--r--. Thus, if sensitive information is written to
this file, other local users can read this information.

File.createTempFile(String, String) will create a temporary file in the system
temporary directory if the 'java.io.tmpdir' system property is not explicitly
set. 

This affects the class 
https://github.com/apache/storm/blob/master/storm-core/src/jvm/org/apache/storm/utils/TopologySpoutLag.java#L99
 and was introduced by  https://issues.apache.org/jira/browse/STORM-3123 

In practice, this has a very limited impact as this class is used only
if ui.disable.spout.lag.monitoring

 is set to false, but its value is true by default.
Moreover, the temporary file gets deleted soon after its creation.

The solution is to use  Files.createTempFile
https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/nio/file/Files.html#createTempFile(java.lang.String,java.lang.String,java.nio.file.attribute.FileAttribute...)
 instead.

We recommend that all users upgrade to the latest version of Apache Storm.



References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-43123