USN-4198-1: DjVuLibre vulnerabilities

21 November 2019

djvulibre vulnerabilities

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

  • Ubuntu 19.10
  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


Several security issues were fixed in DjVuLibre.

Software Description

  • djvulibre - DjVu image format library and tools


It was discovered that DjVuLibre incorrectly handled certain memory operations. If a user or automated system were tricked into processing a specially crafted DjVu file, a remote attacker could cause applications to hang or crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 19.10
libdjvulibre21 -
Ubuntu 19.04
libdjvulibre21 -
Ubuntu 18.04 LTS
libdjvulibre21 -
Ubuntu 16.04 LTS
libdjvulibre21 -

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.