LibreOffice: CVSS (Max): 8.8

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.5007
                  USN-5661-1: LibreOffice vulnerabilities
                              7 October 2022

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           LibreOffice
Publisher:         Ubuntu
Operating System:  Ubuntu
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-26307 CVE-2022-26306 CVE-2022-26305

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-5661-1

Comment: CVSS (Max):  8.8 CVE-2022-26307 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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USN-5661-1: LibreOffice vulnerabilities
6 October 2022

Several security issues were fixed in LibreOffice.
Releases

  o Ubuntu 20.04 LTS

Packages

  o libreoffice - Office productivity suite

Details

It was discovered that LibreOffice incorrectly validated macro signatures.
If a user were tricked into opening a specially crafted document, a remote
attacker could possibly use this issue to execute arbitrary macros.
( CVE-2022-26305 )

It was discovered that Libreoffice incorrectly handled encrypting the
master key provided by the user for storing passwords for web connections.
A local attacker could possibly use this issue to obtain access to
passwords stored in the user's configuration data. ( CVE-2022-26306 ,
CVE-2022-26307 )

Update instructions

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

Ubuntu 20.04

  o libreoffice - 1:6.4.7-0ubuntu0.20.04.5

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

References

  o CVE-2022-26307
  o CVE-2022-26306
  o CVE-2022-26305

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