Bug 1646448 (CVE-2018-18459)

Summary:	CVE-2018-18459 xpdf: NULL pointer dereference in DCTStream::getBlock function in Stream.cc
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	pertusus, tcallawa
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:	2019-06-10 10:41:56 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:	1646450, 1646449
Bug Blocks:

Description Laura Pardo 2018-11-05 15:00:17 UTC

A flaw was found in Xpdf 4.00. A NULL pointer dereference in the function DCTStream::getBlock in Stream.cc allows remote attackers to cause a denial of service via a crafted pdf file.

References:
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41217 
https://github.com/TeamSeri0us/pocs/tree/master/xpdf/2018_10_16/pdftoppm

Comment 1 Laura Pardo 2018-11-05 15:00:50 UTC

Created xpdf tracking bugs for this issue:

Affects: epel-all [bug 1646450]
Affects: fedora-all [bug 1646449]

Comment 2 Product Security DevOps Team 2019-06-10 10:41:56 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.