=========================================================================Ubuntu Security Notice USN-4646-1
November 25, 2020

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in poppler.

Software Description:
- poppler: PDF rendering library

Details:

It was discovered that Poppler incorrectly handled certain files. If a user
or automated system were tricked into opening a crafted PDF file, an
attacker could cause a denial of service.

Update instructions:

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

Ubuntu 18.04 LTS:
  libpoppler73                    0.62.0-2ubuntu2.11
  poppler-utils                   0.62.0-2ubuntu2.11

Ubuntu 16.04 LTS:
  libpoppler58                    0.41.0-0ubuntu1.15
  poppler-utils                   0.41.0-0ubuntu1.15

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

References:
  https://ubuntu.com/security/notices/USN-4646-1
  CVE-2018-21009, CVE-2019-10871, CVE-2019-13283, CVE-2019-9959,
  CVE-2020-27778

Package Information:
  https://launchpad.net/ubuntu/+source/poppler/0.62.0-2ubuntu2.11
  https://launchpad.net/ubuntu/+source/poppler/0.41.0-0ubuntu1.15