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USN-4957-2: DjVuLibre vulnerabilities

18 May 2021

Several security issues were fixed in DjVuLibre.



  • djvulibre - DjVu image format library and tools


USN-4957-1 fixed several vulnerabilities in DjVuLibre. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

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 16.04

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

Related notices

  • USN-4957-1: djvuserve, libdjvulibre-dev, libdjvulibre-text, djvulibre, djvulibre-bin, libdjvulibre21, djvulibre-desktop, djview3, djview