7.8

CVE-2019-9852

Insufficient URL encoding flaw in allowed script location check

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 18.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 19.04
Debian ≫ Debian Linux Version 8.0
Debian ≫ Debian Linux Version 9.0
Debian ≫ Debian Linux Version 10.0
Fedoraproject ≫ Fedora Version 29
Opensuse ≫ Leap Version 15.0
Opensuse ≫ Leap Version 15.1
Libreoffice ≫ Libreoffice Version < 6.2.6
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.93% 0.775
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NIST 6.8 8.6 6.4
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE-116 Improper Encoding or Escaping of Output

The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

https://seclists.org/bugtraq/2019/Aug/28
Third Party Advisory
Mailing List
Issue Tracking
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html
Third Party Advisory
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html
Third Party Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/
https://usn.ubuntu.com/4102-1/
Third Party Advisory
https://www.debian.org/security/2019/dsa-4501
Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/17
Third Party Advisory
Mailing List
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852
Patch
Vendor Advisory