Bug 1444061 (CVE-2017-7870)

Summary:	CVE-2017-7870 libreoffice: Heap-buffer-overflow in tools::Polygon::Insert
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	caolanm, dtardon, erack, sbergman
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libreoffice 5.2.5, libreoffice 5.3.0	Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds write flaw was found in the way Libreoffice rendered certain documents containing Polygon images. By tricking a user into opening a specially crafted LibreOffice file, an attacker could possibly use this flaw to execute arbitrary code with the privileges of the user opening the file.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:10:54 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:	1444065, 1445635
Bug Blocks:	1415638, 1444063

Description Andrej Nemec 2017-04-20 13:39:35 UTC

LibreOffice has an out-of-bounds write caused by a heap-based buffer overflow related to the tools::Polygon::Insert function in tools/source/generic/poly.cxx.

References:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=372

Upstream patch:

https://github.com/LibreOffice/core/commit/62a97e6a561ce65e88d4c537a1b82c336f012722

Comment 1 Andrej Nemec 2017-04-20 13:45:29 UTC

Created libreoffice tracking bugs for this issue:

Affects: fedora-all [bug 1444065]

Comment 3 errata-xmlrpc 2017-08-01 12:22:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1975 https://access.redhat.com/errata/RHSA-2017:1975