steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line, which allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message. References: https://blog.ripstech.com/2016/roundcube-command-execution-via-email/ https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released Upstream patches: https://github.com/roundcube/roundcubemail/commit/aa6bf38843f51a0fc7205acc98a7b84f3c4c9c4f https://github.com/roundcube/roundcubemail/commit/45a3e81653eb6ad3685d1a9ab817a61df78178eb CVE assignment: http://seclists.org/oss-sec/2016/q4/642
Created roundcubemail tracking bugs for this issue: Affects: fedora-all [bug 1403178] Affects: epel-all [bug 1403179]