https://bugzilla.redhat.com/show_bug.cgi?id=1837444
--- Comment #2 from Chess Hazlett chazlett@redhat.com --- Mitigation:
For versions 1.1 to 1.9.14 and 1.10.0 to 1.10.7, set the java.io.tmpdir system property to a private directory-- only readable and writable by the current user-- before running Ant.
For versions 1.9.15 and 1.10.8, use the Ant property ant.tmpfile instead. Ant 1.10.8 protects the temporary files if the underlying filesystem allows it, but using a private temporary directory is still recommended.