This update for VirtualBox 5.2.20 fixes security issues and bugs.

A number of vulnerabilities were fixed a affecting multiple components of VirtualBox bsc#1112097:
CVE-2018-0732, CVE-2018-2909, CVE-2018-3287, CVE-2018-3288, CVE-2018-3289,
CVE-2018-3290, CVE-2018-3291, CVE-2018-3292, CVE-2018-3293, CVE-2018-3294,
CVE-2018-3295, CVE-2018-3296, CVE-2018-3297, and CVE-2018-3298.

This update also contains various bug fixes in the 5.2.20 release:

- VMM: fixed task switches triggered by INTn instruction
- Storage: fixed connecting to certain iSCSI targets
- Storage: fixed handling of flush requests when configured to be ignored when the host I/O cache is used
- Drag and drop fixes
- Video recording: fixed starting video recording on VM power up
- Various fixes to Linux Additions