Bug 1632471 (CVE-2018-17183)

Summary:	CVE-2018-17183 ghostscript: User-writable error exception table
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	mosvald, rskvaril, twaugh, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ghostscript 9.26	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-12-18 09:02:58 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:	1632472, 1632474, 1650210, 1650211
Bug Blocks:	1632473

Description Pedro Sampaio 2018-09-24 20:56:30 UTC

Artifex Ghostscript before 9.25 allowed a user-writable error exception table, which could be used by remote attackers able to supply crafted PostScript to potentially overwrite or replace error handlers to inject code.

Upstream patch:

http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=fb713b3818b52d8a6cf62c951eba2e1795ff9624

Upstream bug:

https://bugs.ghostscript.com/show_bug.cgi?id=699708

Comment 1 Pedro Sampaio 2018-09-24 20:56:58 UTC

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1632472]

Comment 3 Cedric Buissart 2018-11-07 11:03:37 UTC

Note:
The fix creates some regression : https://bugs.ghostscript.com/show_bug.cgi?id=699832 (fix commit : http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=1778db6bc10)

Comment 7 errata-xmlrpc 2018-12-17 19:58:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3834 https://access.redhat.com/errata/RHSA-2018:3834

Comment 8 Cedric Buissart 2018-12-18 08:52:39 UTC

Statement:

Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having a security impact of Important, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Comment 9 Cedric Buissart 2018-12-18 08:52:41 UTC

Mitigation:

Please refer to the "Mitigation" section of CVE-2018-16509 : https://access.redhat.com/security/cve/cve-2018-16509