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Ubuntu Security Notice USN-3389-1

Ubuntu Security Notice USN-3389-1
Posted Aug 14, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3389-1 - A vulnerability was discovered in GD Graphics Library , as used in PHP before that does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read A bytes from the top of the stack.

tags | advisory, php
systems | linux, ubuntu
MD5 | a18b834386443bb94f1292269976dec0

Ubuntu Security Notice USN-3389-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3389-1
August 14, 2017

libgd2 vulnerability
==========================================================================

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

- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

The system could be made to expose sensitive information.

Software Description:
- libgd2: GD Graphics Library

Details:

A vulnerability was descovered in GD Graphics Library (aka libgd),
as used in PHP before that does not zero colorMap arrays before use.
A specially crafted GIF image could use the uninitialized tables to
readA A bytes from the top of the stack.

Update instructions:

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

Ubuntu 17.04:
A libgd-toolsA A A A A A A A A A A A A A A A A A A A A 2.2.4-2ubuntu0.2

Ubuntu 16.04 LTS:
A libgd-toolsA A A A A A A A A A A A A A A A A A A A A 2.1.1-4ubuntu0.16.04.7

Ubuntu 14.04 LTS:
A libgd-toolsA A A A A A A A A A A A A A A A A A A A A 2.1.0-3ubuntu0.7

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

References:
A https://www.ubuntu.com/usn/usn-3389-1
A CVE-2017-7890

Package Information:
A https://launchpad.net/ubuntu/+source/libgd2/2.2.4-2ubuntu0.2
A https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.7
A https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.7

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