Bug 1797466 (CVE-2019-9853)

Summary: CVE-2019-9853 libreoffice: Insufficient URL decoding flaw in categorizing macro location
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 6.3.1 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-03-31 22:36:01 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, 1797469, 1801037, 1801038    
Bug Blocks: 1797470    

Description Dhananjay Arunesh 2020-02-03 08:38:05 UTC 
A vulnerability was found in LibreOffice, where LibreOffice documents can contain macros. The execution of those macros is controlled by the document security settings, typically execution of macros are blocked by default. A URL decoding flaw existed in how the urls to the macros within the document were processed and categorized, resulting in the possibility to construct a document where macro execution bypassed the security settings. The documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings allowing arbitrary macro execution This issue affects: LibreOffice 6.2 series versions prior to 6.2.7; LibreOffice 6.3 series versions prior to 6.3.1.

Reference:
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQGBRSD73KTDZ2MPAOL7FBWO3SQVYE5B/
Comment 1 Dhananjay Arunesh 2020-02-03 08:38:54 UTC 
Created libreoffice tracking bugs for this issue:

Affects: fedora-all [bug 1797469]
Comment 2 Dhananjay Arunesh 2020-02-03 08:40:51 UTC 
External References:

https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9853/
Comment 5 errata-xmlrpc 2020-03-31 19:28:32 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 22:36:01 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-2019-9853
Comment 7 errata-xmlrpc 2020-04-28 15:28:41 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