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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.

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

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.

References

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Further reading