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Ticket Resolution Summary Owner Reporter
#16057 invalid Background colour of text-mode terminal is not black (#010101 not #000000) Donuts
Description

Host: Lubuntu 16.04 x86-64 Guest: Lubuntu 16.10 x86 with Guest Additions 5.1.6

After booting the guest OS and logging in, switch to a terminal (rightCtrl-F1). Notice that the background colour (which I assume is supposed to be black #000000) is actually dark grey (#010101).

#7539 obsolete Background is not correctly erased in seamless mode Bin Tian
Description

The problem happens if the taskbar is at the left/top side of the screen. Following the below steps to reproduce it

  1. Move taskbar to the left/top side of the screen.
  2. Let the guest os enter seamless mode.
  3. Move a window (guest os) in direction opposite to the taskbar (host os).
#14153 fixed Backslash recognised as path separator on Linux guests in shared folders colml
Description

While security testing a PHP web application that uses the basename() function to prevent directory traversal attacks I discovered that backslashes are recognised as valid path separators on Linux guests when working in shared folders. The host is running on Windows.

As basename() on Linux does not strip backslashes directory traversal is possible (i.e. passing ..\\..\\..\\target\\securefile).

The can be tested in bash by changing the current directory (cd ..\\) or referencing another file (cat ..\\file.txt).

Tested on a Ubuntu 14.04 guest with the latest guest additions installed via apt-get. I have not tested on other hosts or guests.

It's possible this behaviour is intentional, but it does allow security breaches in certain cases.

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