CVE-2019-9852

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.

Weakness classification

• CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
• CWE-116: Improper Encoding or Escaping of Output

Primary references

• security@documentfoundation.org — Mailing List, Third Party Advisory
• security@documentfoundation.org — Mailing List, Third Party Advisory
• security@documentfoundation.org — Mailing List, Third Party Advisory
• security@documentfoundation.org
• security@documentfoundation.org — Issue Tracking, Mailing List, Third Party Advisory
• security@documentfoundation.org — Mailing List, Third Party Advisory
• security@documentfoundation.org — Third Party Advisory
• security@documentfoundation.org — Third Party Advisory
• security@documentfoundation.org — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory