Bug 1380415 – CVE-2016-7977 ghostscript: .libfile does not honor -dSAFER

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Bug 1380415 - (CVE-2016-7977) CVE-2016-7977 ghostscript: .libfile does not honor -dSAFER

Summary:	CVE-2016-7977 ghostscript: .libfile does not honor -dSAFER

Status:	CLOSED ERRATA

Aliases:	CVE-2016-7977

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160928,repor...
Keywords:	Security

Depends On:	1380416 1390299 1390300 1390301 1390302
Blocks:	1380329
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Reported:	2016-09-29 10:25 EDT by Adam Mariš
Modified:	2017-01-04 06:10 EST (History)
CC List:	13 users (show)

See Also:
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 06:10:21 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:0013	normal	SHIPPED_LIVE	Moderate: ghostscript security update	2017-01-04 10:09:56 EST
Red Hat Product Errata	RHSA-2017:0014	normal	SHIPPED_LIVE	Moderate: ghostscript security update	2017-01-04 10:09:47 EST

Groups: None (edit)

Description Adam Mariš 2016-09-29 10:25:40 EDT

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 10:26:16 EDT

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1380416]

Comment 2 Adam Mariš 2016-10-06 04:25:14 EDT

CVE assignment:

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

Comment 6 errata-xmlrpc 2017-01-04 05:10:19 EST

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 05:11:29 EST

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

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