Bug 1380415 (CVE-2016-7977)

Summary:	CVE-2016-7977 ghostscript: .libfile does not honor -dSAFER
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, cbuissar, deekej, dmcphers, jialiu, jokerman, kseifried, lmeyer, mmccomas, sardella, tiwillia, twaugh, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	It was found that ghostscript function .libfile did not honor the -dSAFER option, usually used when processing untrusted documents, leading to information disclosure. A specially crafted postscript document could, in the context of the gs process, retrieve file content on the target machine.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-01-04 11:10:21 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:	1380416, 1390299, 1390300, 1390301, 1390302
Bug Blocks:	1380329

Description Adam Mariš 2016-09-29 14:25:40 UTC

It was found that .libfile can be used to access arbitrary files on the file system.

PoC:

http://www.openwall.com/lists/oss-security/2016/09/29/3

Upstream bug:

http://bugs.ghostscript.com/show_bug.cgi?id=697169

Upstream fix:
http://git.ghostscript.com/?p=user/chrisl/ghostpdl.git;a=commitdiff;h=cf046d2

Comment 1 Adam Mariš 2016-09-29 14:26:16 UTC

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1380416]

Comment 2 Adam Mariš 2016-10-06 08:25:14 UTC

CVE assignment:

http://seclists.org/oss-sec/2016/q4/37

Comment 6 errata-xmlrpc 2017-01-04 10:10:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0014 https://rhn.redhat.com/errata/RHSA-2017-0014.html

Comment 7 errata-xmlrpc 2017-01-04 10:11:29 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0013 https://rhn.redhat.com/errata/RHSA-2017-0013.html