Bug 1619756 (CVE-2018-15908) - CVE-2018-15908 ghostscript: .tempfile file permission issues (699657)
Summary: CVE-2018-15908 ghostscript: .tempfile file permission issues (699657)
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-15908
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1621159 1621162 1621164 1654367
Blocks: 1619570
TreeView+ depends on / blocked
 
Reported: 2018-08-21 16:19 UTC by Stefan Cornelius
Modified: 2022-03-13 15:26 UTC (History)
15 users (show)

Fixed In Version: ghostscript 9.24
Doc Type: If docs needed, set a value
Doc Text:
It was discovered that the ghostscript .tempfile function did not properly handle file permissions. An attacker could possibly exploit this to exploit this to bypass the -dSAFER protection and delete files or disclose their content via a specially crafted PostScript document.
Clone Of:
Environment:
Last Closed: 2018-11-28 15:41:15 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3650 0 None None None 2018-11-27 01:21:10 UTC

Description Stefan Cornelius 2018-08-21 16:19:21 UTC 
It was discovered that the ghostscript .tempfile function did not properly handle file permissions. A specially crafted PostScript document could possibly exploit this to bypass the -dSAFER protection and delete files or disclose their content.
Comment 1 Stefan Cornelius 2018-08-21 16:26:02 UTC 
External References:

http://seclists.org/oss-sec/2018/q3/142
Comment 2 Stefan Cornelius 2018-08-22 10:19:49 UTC 
Mitigation:

Please see https://bugzilla.redhat.com/show_bug.cgi?id=1619748#c3
Comment 5 Stefan Cornelius 2018-08-23 14:26:06 UTC 
Patch:
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=0d3901189f
Comment 6 Stefan Cornelius 2018-08-23 15:36:34 UTC 
Acknowledgments:

Name: Tavis Ormandy (Google Project Zero)
Comment 10 errata-xmlrpc 2018-11-27 01:21:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3650 https://access.redhat.com/errata/RHSA-2018:3650
Comment 11 Cedric Buissart 2018-11-28 15:40:20 UTC 
Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1654367]
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