[USN-4697-2] Pillow vulnerabilities

[Leonidas S. Barbosa]

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Ubuntu Security Notice USN-4697-2
January 20, 2021

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

- Ubuntu 14.04 ESM

Summary:

Pillow could be made to crash or run programs as your login if it opened a
specially crafted file.

Software Description:
- pillow: Python Imaging Library

Details:

USN-4697-1 fixed several vulnerabilities in Pillow. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

 It was discovered that Pillow incorrectly handled certain PCX image files.
 If a user or automated system were tricked into opening a specially-crafted
 PCX file, a remote attacker could possibly cause Pillow to crash,
 resulting in a denial of service. (CVE-2020-35653)

 It was discovered that Pillow incorrectly handled certain image files. If
 a user or automated system were tricked into opening a specially-crafted
 image file, a remote attacker could possibly cause Pillow to crash,
 resulting in a denial of service. (CVE-2020-10177)

Update instructions:

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

Ubuntu 14.04 ESM:
  python-pil                      2.3.0-1ubuntu3.4+esm2
  python3-pil                     2.3.0-1ubuntu3.4+esm2

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

References:
  https://usn.ubuntu.com/4697-2
  https://usn.ubuntu.com/4697-1
  CVE-2020-10177, CVE-2020-35653
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