A Pillow security update has been released for Ubuntu Linux 19.10, 18.04 LTS, 16.04 LTS, and 14.04 ESM.

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Ubuntu Security Notice USN-4272-1
February 06, 2020

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

- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Pillow.

Software Description:
- pillow: Python Imaging Library

Details:

It was discovered that Pillow incorrectly handled certain images.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2019-16865, CVE-2019-19911)

It was discovered that Pillow incorrectly handled certain images.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2020-5312)

It was discovered that Pillow incorrectly handled certain TIFF images.
An attacker could possibly use this issue to cause a crash. This issue
only affected Ubuntu 19.10. (CVE-2020-5310)

It was discovered that Pillow incorrectly handled certain SGI images.
An attacker could possibly use this issue to execute arbitrary code or
cause a crash. This issue only affected Ubuntu 18.04 and Ubuntu 19.10.
(CVE-2020-5311)

It was discovered that Pillow incorrectly handled certain PCX images.
An attackter could possibly use this issue to execute arbitrary code or
cause a crash. (CVE-2020-5312)

It was discovered that Pillow incorrectly handled certain Flip images.
An attacker could possibly use this issue to execute arbitrary code or
cause a crash. (CVE-2020-5313)

Update instructions:

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

Ubuntu 19.10:
python-pil 6.1.0-1ubuntu0.2
python3-pil 6.1.0-1ubuntu0.2

Ubuntu 18.04 LTS:
python-pil 5.1.0-1ubuntu0.2
python3-pil 5.1.0-1ubuntu0.2

Ubuntu 16.04 LTS:
python-imaging 3.1.2-0ubuntu1.3
python-pil 3.1.2-0ubuntu1.3
python3-pil 3.1.2-0ubuntu1.3

Ubuntu 14.04 ESM:
python-imaging 2.3.0-1ubuntu3.4+esm1
python-pil 2.3.0-1ubuntu3.4+esm1
python3-imaging 2.3.0-1ubuntu3.4+esm1
python3-pil 2.3.0-1ubuntu3.4+esm1

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

References:
  https://usn.ubuntu.com/4272-1
CVE-2019-16865, CVE-2019-19911, CVE-2020-5310, CVE-2020-5311,
CVE-2020-5312, CVE-2020-5313

Package Information:
  https://launchpad.net/ubuntu/+source/pillow/6.1.0-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/pillow/5.1.0-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/pillow/3.1.2-0ubuntu1.3