In Eclipse Web Tools Platform, a component of the Eclipse IDE, XML and DTD files referring to external entities could be exploited to send the contents of local files to a remote server when edited or validated, even when external entity resolution is disabled in the user preferences.

For Debian 9 stretch, this problem has been fixed in version 3.6.3-3+deb9u1.

We recommend that you upgrade your eclipse-wtp packages.

For the detailed security status of eclipse-wtp please refer to its security tracker page at: https://security-tracker.debian.org/tracker/eclipse-wtp

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS