Ubuntu Security Notice USN-5153-1
November 22, 2021
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
LibreOffice could incorrectly validate document signatures.
- libreoffice: Office productivity suite
It was discovered that LibreOffice incorrectly handled digital
An attacker could possibly use this issue to create a specially crafted
document that would display a validly signed indicator, contrary to
The problem can be corrected by updating your system to the
Ubuntu 20.04 LTS:
In general, a standard system update will make all the necessary changes.