Bug 1744868 (CVE-2019-9852) - CVE-2019-9852 libreoffice: Insufficient URL encoding flaw in allowed script location check
Summary: CVE-2019-9852 libreoffice: Insufficient URL encoding flaw in allowed script l...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-9852
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1743958 1743962 1744869 1812155 1812162
Blocks: 1744872
TreeView+ depends on / blocked
 
Reported: 2019-08-23 04:37 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:28 UTC (History)
4 users (show)

Fixed In Version: LibreOffice 6.2.6, LibreOffice 6.3.0
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-03-31 22:35:26 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1151 0 None None None 2020-03-31 19:28:30 UTC
Red Hat Product Errata RHSA-2020:1598 0 None None None 2020-04-28 15:28:39 UTC

Description Dhananjay Arunesh 2019-08-23 04:37:01 UTC
A vulnerability was found in LibreOffice prior to 6.2.6. 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.

Reference:
https://seclists.org/bugtraq/2019/Aug/28

Comment 1 Dhananjay Arunesh 2019-08-23 04:37:15 UTC
Created libreoffice tracking bugs for this issue:

Affects: fedora-all [bug 1744869]

Comment 2 Dhananjay Arunesh 2019-08-23 04:37:33 UTC
External References:

https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852

Comment 6 errata-xmlrpc 2020-03-31 19:28:29 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1151 https://access.redhat.com/errata/RHSA-2020:1151

Comment 7 Product Security DevOps Team 2020-03-31 22:35:26 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-9852

Comment 8 errata-xmlrpc 2020-04-28 15:28:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1598 https://access.redhat.com/errata/RHSA-2020:1598


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