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Ubuntu Security Notice USN-3389-2

Ubuntu Security Notice USN-3389-2
Posted Aug 14, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3389-2 - USN-3389-1 fixed a vulnerability in GD Graphics Library. This update provides the corresponding update for Ubuntu 12.04 ESM. A vulnerability was discovered in GD Graphics Library , as used in PHP that does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to A read bytes from the top of the stack. Various other issues were also addressed.

tags | advisory, php
systems | linux, ubuntu
MD5 | 9723c2c8c1e56692e9c61e6c12d17618

Ubuntu Security Notice USN-3389-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3389-2
August 14, 2017

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

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

- Ubuntu 12.04 ESM

Summary:

The system could be made to expose sensitive information.

Software Description:
- libgd2: GD Graphics Library

Details:

USN-3389-1 fixed a vulnerability in GD Graphics Library.
This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

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

Update instructions:

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

Ubuntu 12.04 ESM:
A libgd-toolsA A A A A A A A A A A A A A A A A A A A A 2.0.36~rc1~dfsg-6ubuntu2.5

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

References:
A https://www.ubuntu.com/usn/usn-3389-2
A https://www.ubuntu.com/usn/usn-3389-1
A CVE-2017-7890

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