CVE-2019-9852
Publication date 15 August 2019
Last updated 25 August 2025
Ubuntu priority
Description
LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libreoffice | ||
| 18.04 LTS bionic |
Fixed 1:6.0.7-0ubuntu0.18.04.9
|
|
| 16.04 LTS xenial |
Fixed 1:5.1.6~rc2-0ubuntu1~xenial9
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.8 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4102-1
- LibreOffice vulnerabilities
- 19 August 2019