[USN-3389-2] GD vulnerability
Leonidas S. Barbosa
leo.barbosa at canonical.com
Mon Aug 14 19:51:43 UTC 2017
Ubuntu Security Notice USN-3389-2
August 14, 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
The system could be made to expose sensitive information.
- libgd2: GD Graphics Library
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 vulnerability was discovered in GD Graphics Library (aka libgd),
as used in PHP that does not zero colorMap arrays before use.
A specially crafted GIF image could use the uninitialized tables to
read bytes from the top of the stack.
The problem can be corrected by updating your system to the following
Ubuntu 12.04 ESM:
In general, a standard system update will make all the necessary
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