Bug 1625839 – CVE-2018-16539 ghostscript: incorrect access checking in temp file handling to disclose contents of files (699658)

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Bug 1625839 - (CVE-2018-16539) CVE-2018-16539 ghostscript: incorrect access checking in temp file handling to disclose contents of files (699658)

Summary:	CVE-2018-16539 ghostscript: incorrect access checking in temp file handling t...

Status:	NEW

Aliases:	CVE-2018-16539

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=20180906,repor...
Keywords:	Security

Depends On:	1625841 1625840
Blocks:	1619570
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Reported:	2018-09-06 01:19 EDT by Sam Fowler
Modified:	2018-10-31 21:32 EDT (History)
CC List:	2 users (show)

See Also:
Fixed In Version:	ghostscript 9.24
Doc Type:	If docs needed, set a value
Doc Text:	It was discovered that the ghostscript did not properly restrict access to files open prior to enabling the -dSAFER mode. An attacker could possibly exploit this to bypass the -dSAFER protection and disclose the content of affected files via a specially crafted PostScript document.
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Description Sam Fowler 2018-09-06 01:19:33 EDT

In Artifex Ghostscript before 9.24, attackers able to supply crafted PostScript files could use incorrect access checking in temp file handling to disclose contents of files on the system otherwise not readable.


External Reference:

https://www.kb.cert.org/vuls/id/332928
https://www.artifex.com/news/ghostscript-security-resolved/


Upstream Bug:

https://bugs.ghostscript.com/show_bug.cgi?id=699658


Upstream Patch:

http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=a054156d

Comment 1 Sam Fowler 2018-09-06 01:20:01 EDT

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1625840]

Comment 4 Stefan Cornelius 2018-09-20 07:20:39 EDT

Statement:

This issue affects the versions of ghostscript as shipped with Red Hat Enterprise Linux 5, 6, and 7.

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 Moderate, 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/.

Red Hat Enterprise Linux 5 is now in Extended Life Phase of the support and maintenance life cycle. This issue 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/.

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