Bug 1531382 (CVE-2017-1000456)

Summary:	CVE-2017-1000456 poppler: Invalid read in TextPool::addWord() causes crash and can lead to overflow in subsequent calculations
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	alexl, caolanm, feborges, john.j5live, mclasen, mkasik, rdieter, rhughes, rstrode, sandmann
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:36:17 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:	1531383, 1534840
Bug Blocks:	1531387

Description Sam Fowler 2018-01-05 04:29:08 UTC

libpoppler in poppler version 0.60.1 is vulnerable to an invalid read and subsequent crash when parsing a specially crafted PDF. The invalid read is caused by incorrect boundary validation in TextOutputDev.cc:TextPool::addWord(), leading to overflow in subsequent calculations.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-1000456
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-1000456.html
http://www.cvedetails.com/cve/CVE-2017-1000456/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000456
https://bugs.freedesktop.org/show_bug.cgi?id=103116
https://bugs.freedesktop.org/attachment.cgi?id=134691

Comment 1 Sam Fowler 2018-01-05 04:29:34 UTC

Created poppler tracking bugs for this issue:

Affects: fedora-all [bug 1531383]

Comment 3 Huzaifa S. Sidhpurwala 2018-01-16 04:28:28 UTC

Analysis:

This is really an OOB read when trying to render specially-crafted text in a PDF file. No remote code execution.