1. Ubuntu Security Notices
  2. USN-3996-1

USN-3996-1: GNU Screen vulnerability

Publication date

29 May 2019

Overview

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.

Releases

Packages

  • screen - terminal multiplexor with VT100/ANSI terminal emulation

Details

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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
14.04 trusty screen –  4.1.0~20120320gitdb59704-9ubuntu0.1~esm1
12.04 precise screen –  4.0.3-14ubuntu8.1

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References

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