LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute arbitrary python commands contained with the document it is launched from. Protection was added, to address CVE-2019-9848, to block calling LibreLogo from document event script handers, e.g. mouse over. However LibreOffice also has a separate feature where documents can specify that pre-installed scripts can be executed on various global script events such as document-open, etc. In the fixed versions, global script event handlers are validated equivalently to document script event handlers. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.
Published 2019-08-15 22:15:22
Updated 2022-10-14 02:58:02
View at NVD,   CVE.org
Vulnerability category: Input validation

Exploit prediction scoring system (EPSS) score for CVE-2019-9851

Probability of exploitation activity in the next 30 days: 97.10%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 100 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2019-9851

  • LibreOffice Macro Python Code Execution
    Disclosure Date: 2019-07-16
    First seen: 2020-04-26
    exploit/multi/fileformat/libreoffice_logo_exec
    LibreOffice comes bundled with sample macros written in Python and allows the ability to bind program events to them. LibreLogo is a macro that allows a program event to execute text as Python code, allowing RCE. This module generates an ODT file with a dom loaded

CVSS scores for CVE-2019-9851

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2019-9851

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-9851

Products affected by CVE-2019-9851

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