USN-3996-1: GNU Screen vulnerability

GNU Screen vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 14.04 ESM
• Ubuntu 12.04 ESM

Summary

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.

Software Description

• screen - terminal multiplexer 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.

Update instructions

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

Ubuntu 14.04 ESM

screen - 4.1.0~20120320gitdb59704-9ubuntu0.1~esm1

Ubuntu 12.04 ESM

screen - 4.0.3-14ubuntu8.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2015-6806

from Ubuntu Security Notices http://bit.ly/2wxNOgt