Bug 1797466 (CVE-2019-9853) - CVE-2019-9853 libreoffice: Insufficient URL decoding flaw in categorizing macro location
Summary: CVE-2019-9853 libreoffice: Insufficient URL decoding flaw in categorizing mac...
Alias: CVE-2019-9853
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1743958 1743962 1797469 1801037 1801038
Blocks: 1797470
TreeView+ depends on / blocked
Reported: 2020-02-03 08:38 UTC by Dhananjay Arunesh
Modified: 2021-02-16 20:40 UTC (History)
4 users (show)

Fixed In Version: LibreOffice 6.2.6, LibreOffice 6.3.1
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2020-03-31 22:36:01 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1151 0 None None None 2020-03-31 19:28:34 UTC
Red Hat Product Errata RHSA-2020:1598 0 None None None 2020-04-28 15:28:43 UTC

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.


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:


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):


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

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