CVE-2019-9852

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.

• How can I get the fixes?
• What do statuses mean?

References

• MITRE
• NVD
• Launchpad
• Debian

Related Ubuntu Security Notices (USN)

• USN-4102-1
• LibreOffice vulnerabilities
• 19 August 2019

Other references

• https://www.libreoffice.org/about-us/security/advisories/cve-2019-9852/
• https://seclists.org/bugtraq/2019/Aug/28
• https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852
• https://www.cve.org/CVERecord?id=CVE-2019-9852