enigmail: security fix
enigmail was updated to version 1.7.2 (bnc#893330)
* bugfix release which contains several bugfixes including
mail with only Bcc recipients sent in plain text (CVE-2014-5369)
- Submitted by Wolfgang Rosenauer (wrosenauer)
Fixed bugs
bnc#893330
VUL-0: CVE-2014-5369: enigmail: mail with only Bcc recipients sent in plain text