Bug 1427440 – CVE-2017-6196 ghostscript: Multiple use-after-free vulnerabilities in gx_image_enum_begin function

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 1427440 - (CVE-2017-6196) CVE-2017-6196 ghostscript: Multiple use-after-free vulnerabilities in gx_image_enum_begin function

Summary:	CVE-2017-6196 ghostscript: Multiple use-after-free vulnerabilities in gx_imag...

Status:	CLOSED NOTABUG

Aliases:	CVE-2017-6196

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

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

URL:
Whiteboard:	impact=low,public=20170220,reported=2...
Keywords:	Security

Depends On:	1427442
Blocks:	1410024
	Show dependency tree / graph

Reported:	2017-02-28 03:58 EST by Andrej Nemec
Modified:	2017-04-06 10:12 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-03-31 09:28:30 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Andrej Nemec 2017-02-28 03:58:30 EST

Multiple use-after-free vulnerabilities in the gx_image_enum_begin function in base/gxipixel.c in Ghostscript  allow attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted PostScript document.

Upstream bug:

https://bugs.ghostscript.com/show_bug.cgi?id=697596

Upstream patch:

http://git.ghostscript.com/?p=ghostpdl.git;h=ecceafe3abba2714ef9b432035fe0739d9b1a283

Comment 1 Andrej Nemec 2017-02-28 03:59:36 EST

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1427442]

Comment 2 Cedric Buissart 2017-03-31 09:00:43 EDT

RHEL-7 and earlier versions are not affected : The double-free is a side effect of the upstream commit cffb5712b (http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=cffb5712b), which was introduced in ghostscript-9.21.

Comment 3 David Kaspar [Dee'Kej] 2017-04-06 10:12:16 EDT

(In reply to Cedric Buissart from comment #2)
> RHEL-7 and earlier versions are not affected : The double-free is a side
> effect of the upstream commit cffb5712b
> (http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=cffb5712b), which
> was introduced in ghostscript-9.21.

Please note that ghostscript-9.21 is already released, and I'm planning to do a rebase at some point when I have a time. Therefore I'm not sure we should close this BZ as a NOTABUG, because we might stumble upon this again in the future.

Note You need to log in before you can comment on or make changes to this bug.