CVE-2023-2255

A vulnerability was found in LibreOffice. Improper access control in the editor components of The Document Foundation in LibreOffice allows an attacker to craft a document that causes external links to load without a prompt. In the affected versions of LibreOffice documents that used "floating frames" linked to external files, they would load the contents of those frames without prompting the user for permission. This action was inconsistent with the treatment of other linked content in LibreOffice.

It was discovered that LibreOffice did not properly validate the number of parameters passed to the formula interpreter, leading to an array index underflow attack. If a user were tricked into opening a specially crafted spreadsheet file, an attacker could possibly use this issue to execute arbitrary code. Amel Bouziane-Leblond discovered that LibreOffice did not prompt the user before loading the host document inside an IFrame. If a user were tricked into opening a specially crafted input file, an attacker could possibly use this issue to cause information disclosure or execute arbitrary code.