What is the severity of USN-3996-1?

The severity of USN-3996-1 is classified as high due to potential denial of service and arbitrary code execution.

How do I fix USN-3996-1?

To fix USN-3996-1, users should upgrade GNU Screen to a patched version such as 4.1.0~20120320gitdb59704-9ubuntu0.1~esm1 for Ubuntu 14.04 or 4.0.3-14ubuntu8.1 for Ubuntu 12.04.

What versions of Ubuntu are affected by USN-3996-1?

USN-3996-1 affects Ubuntu 12.04 and Ubuntu 14.04 that use vulnerable versions of GNU Screen.

What vulnerability does USN-3996-1 address?

USN-3996-1 addresses a vulnerability in GNU Screen that improperly handles certain input, leading to possible crashes or execution of arbitrary code.

Who discovered the vulnerability in USN-3996-1?

The vulnerability in USN-3996-1 was discovered by researcher Kuang-che Wu.

Vulnerability/
USN-3996-1

29/5/2019

USN-3996-1: GNU Screen vulnerability

First published: Wed May 29 2019(Updated: )

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.

Affected Software	Affected Version	How to fix
All of
ubuntu/screen	<4.1.0~20120320gitdb59704-9ubuntu0.1~esm1	4.1.0~20120320gitdb59704-9ubuntu0.1~esm1
Ubuntu OpenSSH Client	=14.04
All of
ubuntu/screen	<4.0.3-14ubuntu8.1	4.0.3-14ubuntu8.1
Ubuntu OpenSSH Client	=12.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

CVE-2015-6806

Frequently Asked Questions

What is the severity of USN-3996-1?
The severity of USN-3996-1 is classified as high due to potential denial of service and arbitrary code execution.
How do I fix USN-3996-1?
To fix USN-3996-1, users should upgrade GNU Screen to a patched version such as 4.1.0~20120320gitdb59704-9ubuntu0.1~esm1 for Ubuntu 14.04 or 4.0.3-14ubuntu8.1 for Ubuntu 12.04.
What versions of Ubuntu are affected by USN-3996-1?
USN-3996-1 affects Ubuntu 12.04 and Ubuntu 14.04 that use vulnerable versions of GNU Screen.
What vulnerability does USN-3996-1 address?
USN-3996-1 addresses a vulnerability in GNU Screen that improperly handles certain input, leading to possible crashes or execution of arbitrary code.
Who discovered the vulnerability in USN-3996-1?
The vulnerability in USN-3996-1 was discovered by researcher Kuang-che Wu.

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