Podatność CVE-2019-9854


Publikacja: 2019-09-06

Opis:
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-2019-9852, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed by employing a URL encoding attack to defeat the path verification step. However this protection could be bypassed by taking advantage of a flaw in how LibreOffice assembled the final script URL location directly from components of the passed in path as opposed to solely from the sanitized output of the path verification step. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.

Typ:

CWE-284

(Improper Access Control)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
7.5/10
6.4/10
10/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Zdalny
Niska
Nie wymagana
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Częściowy
Częściowy
Częściowy
Affected software
Libreoffice -> Libreoffice 

 Referencje:
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XQKKOIY2DMZCXJINOLIQXD2NWISDKK3N/
https://seclists.org/bugtraq/2019/Sep/17
https://www.debian.org/security/2019/dsa-4519
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9854/

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