The USN-3664-2: Apport vulnerability is fixed automatically and installed on SecureDrop production instances. I received the following OSSEC alert.
OSSEC HIDS Notification. 2018 Jun 05 04:44:51 Received From: (app) A.B.C.D->/var/log/dpkg.log Rule: 2902 fired (level 7) -> "New dpkg (Debian Package) installed." Portion of the log(s): 2018-06-05 04:44:50 status installed ureadahead:amd64 0.100.0-16 --END OF NOTIFICATION OSSEC HIDS Notification. 2018 Jun 05 04:44:51 Received From: (app) A.B.C.D->/var/log/dpkg.log Rule: 2902 fired (level 7) -> "New dpkg (Debian Package) installed." Portion of the log(s): 2018-06-05 04:44:50 status installed hicolor-icon-theme:all 0.13-1 --END OF NOTIFICATION OSSEC HIDS Notification. 2018 Jun 05 04:44:53 Received From: (app) A.B.C.D->/var/log/dpkg.log Rule: 2902 fired (level 7) -> "New dpkg (Debian Package) installed." Portion of the log(s): 2018-06-05 04:44:51 status installed man-db:amd64 2.6.7.1-1ubuntu1 --END OF NOTIFICATION OSSEC HIDS Notification. 2018 Jun 05 04:44:53 Received From: (app) A.B.C.D->/var/log/dpkg.log Rule: 2902 fired (level 7) -> "New dpkg (Debian Package) installed." Portion of the log(s): 2018-06-05 04:44:51 status installed python3-problem-report:all 2.14.1-0ubuntu3.29 --END OF NOTIFICATION OSSEC HIDS Notification. 2018 Jun 05 04:44:53 Received From: (app) A.B.C.D->/var/log/dpkg.log Rule: 2902 fired (level 7) -> "New dpkg (Debian Package) installed." Portion of the log(s): 2018-06-05 04:44:52 status installed python3-apport:all 2.14.1-0ubuntu3.29 --END OF NOTIFICATION OSSEC HIDS Notification. 2018 Jun 05 04:44:53 Received From: (app) A.B.C.D->/var/log/dpkg.log Rule: 2902 fired (level 7) -> "New dpkg (Debian Package) installed." Portion of the log(s): 2018-06-05 04:44:53 status installed apport:all 2.14.1-0ubuntu3.29 --END OF NOTIFICATION