Detections
Analytics
LibreOffice < 6.2.6 / 6.3 Input Validation (Windows)
critical Nessus Plugin ID 133474
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Synopsis
A input validation vulnerability exists in Document Foundation LibreOffice versions prior to 6.2.6 or 6.3.0 due to insufficient URL encoding.Description
According to its self-reported version, the LibreOffice application running on the remote host is prior to 6.2.6.It is, therefore, affected by multiple vulnerabilities:
- Protection that was added to mitigate CVE-2019-9848 which prevents LibreLogo from being called from a document event handler. However, insufficient validation of URL encoded characters could allow an attacker to bypass these protections and trigger LibreLogo from script event handlers. (CVE-2019-9850)
- It is possible for documents to specify that pre-installed scripts be executed on global script events like document-open, etc. (CVE-2019-9851)
- A feature of this application is that documents can make use of pre-installed macros that can be executed on various script events, the macros are supposed to only be able to access scripts in share/Scripts/python and user/Scripts/python sub-directories of the applications install. However, due to not properly sanitizing URL encoded characters this can be bypassed to allow execution of scripts in other directories. (CVE-2019-9852) Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade to LibreOffice version 6.2.6, 6.3.0 or later.See Also
http://www.nessus.org/u?52397567
Plugin Details
Severity: Critical
ID: 133474
File Name: libreoffice_630.nasl
Version: 1.3
Type: local
Agent: windows
Family: Windows
Published: 2/5/2020
Updated: 1/19/2023
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.4
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.2
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2019-9851
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:libreoffice:libreoffice
Required KB Items: SMB/Registry/Enumerated, installed_sw/LibreOffice
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 7/28/2019
Vulnerability Publication Date: 8/15/2019
Exploitable With
Core Impact
Metasploit (LibreOffice Macro Python Code Execution)