[USN-3454-2] libffi vulnerability

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[USN-3454-2] libffi vulnerability

Leonidas S. Barbosa
==========================================================================
Ubuntu Security Notice USN-3454-2
October 24, 2017

libffi vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

A security issue was fixed in libffi.

Software Description:
- libffi: Foreign Function Interface library (development files, 32bit)

Details:

USN-3454-1 fixed a vulnerability in libffi. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that libffi incorrectly enforced an executable  
 stack. An attacker could possibly use this issue, in combination with
 another vulnerability, to facilitate executing arbitrary code.

Update instructions:

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

Ubuntu 12.04 ESM:
  libffi6                         3.0.11~rc1-5ubuntu0.1

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

References:
  https://www.ubuntu.com/usn/usn-3454-2
  https://www.ubuntu.com/usn/usn-3454-1
  CVE-2017-1000376

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