Ubuntu Security Notice USN-3228-1

13th March, 2017

libevent vulnerabilities

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

• Ubuntu 16.10
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in libevent.

Software description

• libevent
  – Asynchronous event notification library

Details

Guido Vranken discovered that libevent incorrectly handled memory when
processing certain data. A remote attacker could possibly use this issue
with an application that uses libevent to cause a denial of service, or
possibly execute arbitrary code.

Update instructions

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

Ubuntu 16.10:

libevent-2.0-5

2.0.21-stable-2ubuntu0.16.10.1

Ubuntu 16.04 LTS:

libevent-2.0-5

2.0.21-stable-2ubuntu0.16.04.1

Ubuntu 14.04 LTS:

libevent-2.0-5

2.0.21-stable-1ubuntu1.14.04.2

Ubuntu 12.04 LTS:

libevent-2.0-5

2.0.16-stable-1ubuntu0.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2016-10195,

CVE-2016-10196,

CVE-2016-10197

Ubuntu Security Notice USN-3229-1

13th March, 2017

python-imaging vulnerabilities

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

• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in the Python Imaging Library.

Software description

• python-imaging
  – Python Imaging Library

Details

It was discovered that the Python Imaging Library incorrectly handled
certain compressed text chunks in PNG images. A remote attacker could
possibly use this issue to cause the Python Imaging Library to crash,
resulting in a denial of service. (CVE-2014-9601)

Cris Neckar discovered that the Python Imaging Library incorrectly handled
certain malformed images. A remote attacker could use this issue to cause
the Python Imaging Library to crash, resulting in a denial of service, or
possibly obtain sensitive information. (CVE-2016-9189)

Cris Neckar discovered that the Python Imaging Library incorrectly handled
certain malformed images. A remote attacker could use this issue to cause
the Python Imaging Library to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2016-9190)

Update instructions

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

Ubuntu 12.04 LTS:

python-imaging

1.1.7-4ubuntu0.12.04.3

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2014-9601,

CVE-2016-9189,

CVE-2016-9190

Ubuntu Security Notice USN-3230-1

13th March, 2017

pillow vulnerabilities

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

• Ubuntu 16.10
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Pillow.

Software description

• pillow
  – Python Imaging Library

Details

It was discovered that Pillow incorrectly handled certain compressed text
chunks in PNG images. A remote attacker could possibly use this issue to
cause Pillow to crash, resulting in a denial of service. This issue only
affected Ubuntu 14.04 LTS. (CVE-2014-9601)

Cris Neckar discovered that Pillow incorrectly handled certain malformed
images. A remote attacker could use this issue to cause Pillow to crash,
resulting in a denial of service, or possibly obtain sensitive information.
(CVE-2016-9189)

Cris Neckar discovered that Pillow incorrectly handled certain malformed
images. A remote attacker could use this issue to cause Pillow to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2016-9190)

Update instructions

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

Ubuntu 16.10:

python-imaging

3.3.1-1ubuntu0.1

python3-pil

3.3.1-1ubuntu0.1

python-pil

3.3.1-1ubuntu0.1

Ubuntu 16.04 LTS:

python-imaging

3.1.2-0ubuntu1.1

python3-pil

3.1.2-0ubuntu1.1

python-pil

3.1.2-0ubuntu1.1

Ubuntu 14.04 LTS:

python-imaging

2.3.0-1ubuntu3.4

python3-pil

2.3.0-1ubuntu3.4

python-pil

2.3.0-1ubuntu3.4

python3-imaging

2.3.0-1ubuntu3.4

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2014-9601,

CVE-2016-9189,

CVE-2016-9190