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Ubuntu 20.04 LTS USN-5153-1 Moderate: LibreOffice Signature Flaw

ubuntu
Calendar Grey November 22, 2021
Dist Ubuntu Esm H88
Security issues in the LibreOffice suite for Ubuntu 20.04 LTS may result in misleading notifications regarding signature authenticity. It is advisable to apply available updates.
LibreOffice could incorrectly validate document signatures.

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.

Topics%20covered

Topics Covered

security advisory moderate ubuntu signature flaw libreoffice incorrect validation document signature

Update Instructions

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

Ubuntu 20.04 LTS:
  libreoffice-core                1:6.4.7-0ubuntu0.20.04.2

In general, a standard system update will make all the necessary changes.

References

CVE-2021-25633, CVE-2021-25634

Severity
important
Lowest
Low
Medium
High
Critical

November 22, 2021

Topics%20covered

Topics Covered

security advisory moderate ubuntu signature flaw libreoffice incorrect validation document signature

Package Information

https://launchpad.net/ubuntu/+source/libreoffice/1:6.4.7-0ubuntu0.20.04.2

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