Enigmail 1.7.x before 1.7.2 sends emails in plaintext when encryption is enabled and only BCC recipients are specified, which allows remote attackers to obtain sensitive information by sniffing the network.
openSUSE 12.3 Update openSUSE 13.1 openSUSE Tumbleweed SUSE Linux Enterprise Desktop 15 SP1 SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Linux Enterprise Workstation Extension 15 SUSE Linux Enterprise Workstation Extension 15 SP1