Vulnerability CVE-2019-9852


Published: 2019-08-15

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.

Type:

CWE-22

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

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Libreoffice -> Libreoffice 
Fedoraproject -> Fedora 
Debian -> Debian linux 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/
https://seclists.org/bugtraq/2019/Aug/28
https://usn.ubuntu.com/4102-1/
https://www.debian.org/security/2019/dsa-4501
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852

Copyright 2020, cxsecurity.com

 

Back to Top