SB2023012370 - Red Hat Enterprise Linux 9 update for libreoffice
Published: January 23, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 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.4) Command Injection (CVE-ID: CVE-2022-3140)
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when parsing arguments for the "vnd.libreoffice.command'" URI scheme. A remote attacker can create a specially crafted document, trick the victim into opening it and execute internal macros with arbitrary arguments.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.