==========================================================================
Ubuntu Security Notice USN-3408-1
September 04, 2017

liblouis vulnerabilities
==========================================================================

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

- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Liblouis.

Software Description:
- liblouis: Braille translation library - utilities

Details:

It was discovered that an illegal address access can be made in
Liblouis. A remote attacker can take advantange of this to
access sensitive information. (CVE-2017-13738, CVE-2017-13744)

It was discovered a heap-based buffer overflow that causes bytes
out-of-bounds write in Liblouis. A remote attacker can use this to
denial of service or remote code execution. (CVE-2017-13739)

It was discovered a stack-based buffer overflow in Liblouis. A remote
attacker can use this to denial of service or possibly unspecified
other impact. (CVE-2017-13740, CVE-2017-13742)

Update instructions:

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

Ubuntu 17.04:
A  liblouis-binA A A A A A A A A A A A A A A A A A A A 3.0.0-3ubuntu0.2
A  liblouis12A A A A A A A A A A A A A A A A A A A A A A 3.0.0-3ubuntu0.2
A  python-louisA A A A A A A A A A A A A A A A A A A A 3.0.0-3ubuntu0.2
A  python3-louisA A A A A A A A A A A A A A A A A A A 3.0.0-3ubuntu0.2

Ubuntu 16.04 LTS:
A  liblouis-binA A A A A A A A A A A A A A A A A A A A 2.6.4-2ubuntu0.1
A  liblouis9A A A A A A A A A A A A A A A A A A A A A A A 2.6.4-2ubuntu0.1
A  python-louisA A A A A A A A A A A A A A A A A A A A 2.6.4-2ubuntu0.1
A  python3-louisA A A A A A A A A A A A A A A A A A A 2.6.4-2ubuntu0.1

Ubuntu 14.04 LTS:
A  liblouis-binA A A A A A A A A A A A A A A A A A A A 2.5.3-2ubuntu1.1
A  liblouis2A A A A A A A A A A A A A A A A A A A A A A A 2.5.3-2ubuntu1.1
A  python-louisA A A A A A A A A A A A A A A A A A A A 2.5.3-2ubuntu1.1
A  python3-louisA A A A A A A A A A A A A A A A A A A 2.5.3-2ubuntu1.1

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

References:
A  https://www.ubuntu.com/usn/usn-3408-1
A  CVE-2017-13738, CVE-2017-13739, CVE-2017-13740, CVE-2017-13742,
A  CVE-2017-13744

Package Information:
A  https://launchpad.net/ubuntu/+source/liblouis/3.0.0-3ubuntu0.2
A  https://launchpad.net/ubuntu/+source/liblouis/2.6.4-2ubuntu0.1
A  https://launchpad.net/ubuntu/+source/liblouis/2.5.3-2ubuntu1.1