CVE-2022-26305

An Improper Certificate Validation vulnerability in LibreOffice existed where determining if a macro was signed by a trusted author was done by only matching the serial number and issuer string of the used certificate with that of a trusted certificate. This is not sufficient to verify that the macro was actually signed with the certificate. An adversary could therefore create an arbitrary certificate with a serial number and an issuer string identical to a trusted certificate which LibreOffice would present as belonging to the trusted author, potentially leading to the user to execute arbitrary code contained in macros improperly trusted. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.1.

LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite.

Security Fix(es):

• libreoffice: Macro URL arbitrary script execution (CVE-2022-3140)

• libreoffice: Execution of Untrusted Macros Due to Improper Certificate Validation (CVE-2022-26305)

• libreoffice: Static Initialization Vector Allows to Recover Passwords for Web Connections Without Knowing the Master Password (CVE-2022-26306)

• libreoffice: Weak Master Keys (CVE-2022-26307)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite.

Security Fix(es):

• libreoffice: Macro URL arbitrary script execution (CVE-2022-3140)

• libreoffice: Execution of Untrusted Macros Due to Improper Certificate Validation (CVE-2022-26305)

• libreoffice: Static Initialization Vector Allows to Recover Passwords for Web Connections Without Knowing the Master Password (CVE-2022-26306)

• libreoffice: Weak Master Keys (CVE-2022-26307)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

An Improper Certificate Validation vulnerability in LibreOffice existed where determining if a macro was signed by a trusted author was done by only matching the serial number and issuer string of the used certificate with that of a trusted certificate. This is not sufficient to verify that the macro was actually signed with the certificate. An adversary could therefore create an arbitrary certificate with a serial number and an issuer string identical to a trusted certificate which LibreOffice would present as belonging to the trusted author, potentially leading to the user to execute arbitrary code contained in macros improperly trusted. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.1.

LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite.

Security Fix(es):

• libreoffice: Macro URL arbitrary script execution (CVE-2022-3140)
• libreoffice: Execution of Untrusted Macros Due to Improper Certificate Validation (CVE-2022-26305)
• libreoffice: Static Initialization Vector Allows to Recover Passwords for Web Connections Without Knowing the Master Password (CVE-2022-26306)
• libreoffice: Weak Master Keys (CVE-2022-26307)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite.

Security Fix(es):

• libreoffice: Macro URL arbitrary script execution (CVE-2022-3140)
• libreoffice: Execution of Untrusted Macros Due to Improper Certificate Validation (CVE-2022-26305)
• libreoffice: Static Initialization Vector Allows to Recover Passwords for Web Connections Without Knowing the Master Password (CVE-2022-26306)
• libreoffice: Weak Master Keys (CVE-2022-26307)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

These are all security issues fixed in the libreoffice-7.4.2.3-1.1 package on the GA media of openSUSE Tumbleweed.

This update for libreoffice fixes the following issues:

Updated to version 7.3.6.2 (jsc#SLE-23448):

• CVE-2022-3140: Fixed macro URL arbitrary script execution (bsc#1203209).
• CVE-2022-26305: Fixed execution of untrusted Macros due to improper certificate validation (bsc#1201868).
• CVE-2022-26307: Fixed weak Master Keys in password storage (bsc#1201872).

This update for libreoffice fixes the following issues:

Updated to version 7.3.6.2 (jsc#SLE-23447):

• CVE-2022-3140: Fixed macro URL arbitrary script execution (bsc#1203209).
• CVE-2022-26305: Fixed execution of untrusted Macros due to improper certificate validation (bsc#1201868).
• CVE-2022-26307: Fixed weak Master Keys in password storage (bsc#1201872).

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)

It was discovered that LibreOffice incorrectly handled links using the Office URI Schemes. If a user were tricked into opening a specially crafted document, a remote attacker could use this issue to execute arbitrary scripts. (CVE-2022-3140)

Thomas Florian discovered that LibreOffice incorrectly handled crashes when an encrypted document is open. If the document is recovered upon restarting LibreOffice, subsequent saves of the document were unencrypted. This issue only affected Ubuntu 18.04 LTS. (CVE-2020-12801)

Jens Müller discovered that LibreOffice incorrectly handled certain documents containing forms. If a user were tricked into opening a specially crafted document, a remote attacker could overwrite arbitrary files when the form was submitted. This issue only affected Ubuntu 18.04 LTS. (CVE-2020-12803)

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. This issue only affected Ubuntu 18.04 LTS. (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. This issue only affected Ubuntu 18.04 LTS. (CVE-2022-26306, CVE-2022-26307)