SB2022100634 - Ubuntu update for libreoffice

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Main Vulnerability Database SB2022100634

SB2022100634 - Ubuntu update for libreoffice

Published: October 6, 2022

Security Bulletin ID SB2022100634
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Improper Certificate Validation (CVE-ID: CVE-2022-26305)

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper certificate validation when checking signed macro attached to the document. A remote attacker can trick the victim to open a specially crafted file, bypass implemented security restrictions and execute arbitrary code on the system.


2) Inadequate Encryption Strength (CVE-ID: CVE-2022-26306)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to LibreOffice uses a weak initialization vector for encrypting passwords for web connections in the user’s configuration database. A local user can decrypt victim's password.


3) Inadequate Encryption Strength (CVE-ID: CVE-2022-26307)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to LibreOffice uses a poor encoding of the master key for web connections in the user’s configuration database, resulting in weakening its entropy from 128 to 43 bits. A local user can decrypt victim's password.

Remediation

Install update from vendor's website.

References