Bug 1716834 (CVE-2019-12493)

Summary:	CVE-2019-12493 xpdf: stack-based buffer over-read in function PostScriptFunction::transform in Function.cc
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
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 10:56:44 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:	1716837, 1716836
Bug Blocks:

Description Dhananjay Arunesh 2019-06-04 09:07:23 UTC

A stack-based buffer over-read exists in PostScriptFunction::transform in
Function.cc in Xpdf 4.01.01 because GfxSeparationColorSpace and
GfxDeviceNColorSpace mishandle tint transform functions. It can, for example, be
triggered by sending a crafted PDF document to the pdftops tool. It might allow
an attacker to cause Denial of Service or leak memory data.

Reference:
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41806

Comment 1 Dhananjay Arunesh 2019-06-04 09:08:22 UTC

Created xpdf tracking bugs for this issue:

Affects: fedora-all [bug 1716836]

Comment 2 Dhananjay Arunesh 2019-06-04 09:08:45 UTC

Created xpdf tracking bugs for this issue:

Affects: epel-all [bug 1716837]

Comment 3 Product Security DevOps Team 2019-06-10 10:56:44 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.