Updated CUPS packages are available for Ubuntu Linux 20.04 LTS, 19.10, 18.04 LTS, and 16.04 LTS.

USN-4340-1: CUPS vulnerabilities

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Ubuntu Security Notice USN-4340-1
April 27, 2020

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

- Ubuntu 20.04
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in CUPS.

Software Description:
- cups: Common UNIX Printing System(tm)

Details:

It was discovered that CUPS incorrectly handled certain language values. A
local attacker could possibly use this issue to cause CUPS to crash,
leading to a denial of service, or possibly obtain sensitive information.
This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu
19.10. (CVE-2019-2228)

Stephan Zeisberg discovered that CUPS incorrectly handled certain malformed
ppd files. A local attacker could possibly use this issue to execute
arbitrary code. (CVE-2020-3898)

Update instructions:

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

Ubuntu 20.04:
cups 2.3.1-9ubuntu1.1

Ubuntu 19.10:
cups 2.2.12-2ubuntu1.1

Ubuntu 18.04 LTS:
cups 2.2.7-1ubuntu2.8

Ubuntu 16.04 LTS:
cups 2.1.3-4ubuntu0.11

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

References:
  https://usn.ubuntu.com/4340-1
CVE-2019-2228, CVE-2020-3898

Package Information:
  https://launchpad.net/ubuntu/+source/cups/2.3.1-9ubuntu1.1
  https://launchpad.net/ubuntu/+source/cups/2.2.12-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/cups/2.2.7-1ubuntu2.8
  https://launchpad.net/ubuntu/+source/cups/2.1.3-4ubuntu0.11