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Ubuntu Security Notice USN-3996-1

Ubuntu Security Notice USN-3996-1
Posted May 29, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3996-1 - 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.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2015-6806
MD5 | d041b5c828b92d1b4c62137e5288dc38

Ubuntu Security Notice USN-3996-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3996-1
May 29, 2019

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

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

References:
https://usn.ubuntu.com/usn/usn-3996-1
CVE-2015-6806

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