CVE-2019-9852 Insufficient URL encoding flaw in allowed script location check

2019-08-1500:00:00

CWE-116

Document Fdn.

www.cve.org

8.9 High

AI Score

Confidence

High

0.964 High

EPSS

Percentile

99.6%

JSON

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.

CNA Affected

[
  {
    "product": "LibreOffice",
    "vendor": "Document Foundation",
    "versions": [
      {
        "lessThan": "6.2.6",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]