=========================================================================Ubuntu Security Notice USN-4646-2
November 26, 2020

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

USN-4646-1 introduced a regression in poppler.

Software Description:
- poppler: PDF rendering library

Details:

USN-4646-1 fixed vulnerabilities in poppler. The fix for CVE-2019-10871
introduced a regression causing certain applications linked against poppler
to fail. This update backs out the fix pending further investigation.

We apologize for the inconvenience.

Original advisory 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                    0.62.0-2ubuntu2.12
  poppler-utils                   0.62.0-2ubuntu2.12

Ubuntu 16.04 LTS:
  libpoppler58                    0.41.0-0ubuntu1.16
  poppler-utils                   0.41.0-0ubuntu1.16

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

References:
  https://ubuntu.com/security/notices/USN-4646-2
  https://ubuntu.com/security/notices/USN-4646-1
  https://launchpad.net/bugs/1905741

Package Information:
  https://launchpad.net/ubuntu/+source/poppler/0.62.0-2ubuntu2.12
  https://launchpad.net/ubuntu/+source/poppler/0.41.0-0ubuntu1.16