Fix for CVE-2015-0856 (bug 563108) backported from the version 0.12.0.
--- src/daemon/Greeter.cpp
+++ src/daemon/Greeter.cpp
@@ -135,6 +135,11 @@
             env.insert("XDG_VTNR", QString::number(m_display->terminalId()));
             env.insert("XDG_SESSION_CLASS", "greeter");
             env.insert("XDG_SESSION_TYPE", m_display->sessionType());
+
+            //some themes may use KDE components and that will automatically load KDE's crash handler which we don't want
+            //counterintuitively setting this env disables that handler
+            env.insert("KDE_DEBUG", "1");
+
             m_auth->insertEnvironment(env);
 
             // log message