A LibreOffice security update has been released for Ubuntu 18.04 LTS, 20.04 LTS, and 21.10.
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Ubuntu Security Notice USN-5330-1
March 15, 2022
libreoffice vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
LibreOffice could incorrectly validate document signatures.
Software Description:
- libreoffice: Office productivity suite
Details:
It was discovered that LibreOffice incorrectly handled digital signatures.
An attacker could possibly use this issue to create a specially crafted
document that would display a validly signed indicator, contrary to
expectations.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.10:
libreoffice-core 1:7.2.5-0ubuntu0.21.10.3
Ubuntu 20.04 LTS:
libreoffice-core 1:6.4.7-0ubuntu0.20.04.4
Ubuntu 18.04 LTS:
libreoffice-core 1:6.0.7-0ubuntu0.18.04.11
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5330-1
CVE-2021-25636
Package Information:
https://launchpad.net/ubuntu/+source/libreoffice/1:7.2.5-0ubuntu0.21.10.3
https://launchpad.net/ubuntu/+source/libreoffice/1:6.4.7-0ubuntu0.20.04.4
https://launchpad.net/ubuntu/+source/libreoffice/1:6.0.7-0ubuntu0.18.04.11
