Bug 1507805 (CVE-2017-12607)

Summary:	CVE-2017-12607 libreoffice: Out-of-bounds write in the PPTStyleSheet::PPTStyleSheet functionality
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	anemec, caolanm, dtardon, erack, mstahl, sbergman
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libreoffice 5.0.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-10-31 09:23:45 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:	1507808
Bug Blocks:	1507560

Description Andrej Nemec 2017-10-31 08:20:30 UTC

An exploitable out of bound write vulnerability exists in the PPTStyleSheet::PPTStyleSheet functionality of Apache OpenOffice. A specially crafted PPT file can cause an out of bound write resulting in arbitrary code execution. An attacker can send/provide a malicious PPT file to trigger this vulnerability.

External References:

https://www.talosintelligence.com/reports/TALOS-2017-0300
https://www.openoffice.org/security/cves/CVE-2017-12607.html
https://www.libreoffice.org/about-us/security/advisories/CVE-2017-12607

Comment 1 Andrej Nemec 2017-10-31 08:23:06 UTC

Created libreoffice tracking bugs for this issue:

Affects: fedora-all [bug 1507808]

Comment 2 David Tardon 2017-10-31 08:52:23 UTC

At a glance, this should be addressed by https://gerrit.libreoffice.org/gitweb?p=core.git;a=commitdiff_plain;h=6c401a7bdc4e0f5340203b9885e368cb96986aa1 . Is it possible to get a reproducer?

Comment 3 David Tardon 2017-10-31 09:08:24 UTC

The actual commit fixing this is https://cgit.freedesktop.org/libreoffice/core/commit/?id=334dba623dfb0c4fb2b5292c2d03741b7b33aef1 -> no current Fedora is vulnerable.

Comment 4 Huzaifa S. Sidhpurwala 2017-10-31 09:23:45 UTC

As per LibreOffice upstream advisory mentioned in comment 0, this issue is fixed in version 5.0.2, hence only the version shipped with Red Hat Enterprise Linux 6 is vulnerable.