/etc/ is in iceweasel 38.8.0esr-1~deb7u1.
This file is owned by root:root, with mode 0o755.
..
/etc/iceweasel/profile/chrome/
/etc/iceweasel/
/etc/iceweasel/pref/
/etc/iceweasel/pref/iceweasel.js
/etc/iceweasel/profile/
/etc/iceweasel/profile/mimeTypes.rdf
/etc/iceweasel/profile/chrome/userChrome-example.css
/etc/iceweasel/profile/chrome/userContent-example.css
/etc/iceweasel/profile/prefs.js
/etc/iceweasel/profile/bookmarks.html
/etc/iceweasel/profile/localstore.rdf
/etc/iceweasel/searchplugins/
/etc/iceweasel/searchplugins/locale/
/etc/iceweasel/searchplugins/locale/en-US/
/etc/iceweasel/searchplugins/locale/en-US/bing.xml
/etc/iceweasel/searchplugins/locale/en-US/ddg.xml
/etc/iceweasel/searchplugins/locale/en-US/eBay.xml
/etc/iceweasel/searchplugins/locale/en-US/wikipedia.xml
/etc/iceweasel/searchplugins/locale/en-US/yahoo.xml
/etc/iceweasel/searchplugins/locale/en-US/twitter.xml
/etc/iceweasel/searchplugins/locale/en-US/google.xml
/etc/iceweasel/searchplugins/locale/en-US/amazondotcom.xml
/etc/iceweasel/searchplugins/common/
/etc/iceweasel/searchplugins/common/debsearch.xml