Bug 1626481 (CVE-2018-16648)

Summary:	CVE-2018-16648 mupdf: Array index underflow in pdf_dev_alpha resulting in a crash
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	mjg
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 10:37:37 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:	1626484
Bug Blocks:

Description Andrej Nemec 2018-09-07 12:53:46 UTC

In Artifex MuPDF 1.13.0, the fz_append_byte function in fitz/buffer.c allows remote attackers to cause a denial of service (segmentation fault) via a crafted pdf file. This is caused by a pdf/pdf-device.c pdf_dev_alpha array-index underflow.

Upstream issue:

https://bugs.ghostscript.com/show_bug.cgi?id=699685

Comment 1 Andrej Nemec 2018-09-07 12:56:17 UTC

Created mupdf tracking bugs for this issue:

Affects: fedora-all [bug 1626484]

Comment 2 Dhananjay Arunesh 2019-03-12 05:43:59 UTC

Upstream commit:
http://git.ghostscript.com/?p=mupdf.git;h=38f883fe129a5e89306252a4676eaaf4bc968824

Comment 3 Product Security DevOps Team 2019-06-10 10:37:37 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.