A missing boundary check in the TLS Heartbeat extension in OpenSSL can be abused by remote attackers to read up to 64 kb of memory from the server.



This memory disclosure vulnerability can be used by remote unauthenticated attackers to obtain sensitive information from the affected server, including private keys and session cookies.



WARNING: This is an early release module. This is not the final version of this module. It is a pre-released version in order to deliver a module as quickly as possible to our customers that may be useful in some situations. Since this module is not the final version it may contain bugs or have limited functionality and may not have complete or accurate documentation.
The VBoxSF.sys driver is a component of VirtualBox Guest Additions, which is in charge of providing the 'Shared Folders' feature offered by Oracle VirtualBox.

This driver doesn't properly validate a pointer when handling the IOCTL_MRX_VBOX_DELCONN IoControl. This allows an unprivileged user in a Windows Guest OS with VirtualBox Guest Additions installed to gain SYSTEM privileges within the Guest OS.