=========================================================================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 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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
libgd-tools 2.0.36~rc1~dfsg-6ubuntu2.5
In general, a standard system update will make all the necessary
changes.
References:
https://ubuntu.com/security/notices/USN-3389-2
https://ubuntu.com/security/notices/USN-3389-1
CVE-2017-7890
