A poppler regression update has been released for Ubuntu Linux 16.04 LTS and 18.04 LTS.

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

poppler regression
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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://usn.ubuntu.com/4646-2
  https://usn.ubuntu.com/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