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USN-3996-1: GNU Screen vulnerability

29 May 2019

GNU Screen could be made to crash or run programs as your login if it opened a specially crafted file or received specially crafted input.



  • screen - terminal multiplexor with VT100/ANSI terminal emulation


Kuang-che Wu discovered that GNU Screen improperly handled certain input. An
attacker could use this issue to cause GNU Screen to crash, resulting in a
denial of service or the execution of arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.