Bug 1744862 (CVE-2019-9850)

Summary: CVE-2019-9850 libreoffice: Insufficient URL validation allowing LibreLogo script execution
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: caolanm, dtardon, erack, sbergman
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: LibreOffice 6.2.6, LibreOffice 6.3.0 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-03-31 22:35:22 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1743958, 1743962, 1744863, 1812154, 1812157    
Bug Blocks: 1744872    

Description Dhananjay Arunesh 2019-08-23 04:13:00 UTC 
A vulnerability was found in LibreOffice prior to 6.2.6. LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute arbitrary python commands contained with the document it is launched from. LibreOffice also has a feature where documents can specify that pre-installed scripts can be executed on various document script events such as mouse-over, etc. Protection was added, to address CVE-2019-9848, to block calling LibreLogo from script event handers. However an insufficient url validation vulnerability in LibreOffice allowed malicious to bypass that protection and again trigger calling LibreLogo from script event handlers. 

Reference:
https://seclists.org/bugtraq/2019/Aug/28
Comment 1 Dhananjay Arunesh 2019-08-23 04:13:19 UTC 
Created libreoffice tracking bugs for this issue:

Affects: fedora-all [bug 1744863]
Comment 2 Dhananjay Arunesh 2019-08-23 04:14:11 UTC 
External References:

https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9850
Comment 3 Stefan Cornelius 2020-03-10 16:28:53 UTC 
Patch:
https://cgit.freedesktop.org/libreoffice/core/commit/?id=7942929685fafb0f9c82feb8da7279e5103c87f0
Comment 5 errata-xmlrpc 2020-03-31 19:28:28 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 6 Product Security DevOps Team 2020-03-31 22:35:22 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-2019-9850
Comment 7 errata-xmlrpc 2020-04-28 15:28:30 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