Bug 1642578 – CVE-2018-17961 ghostscript: saved execution stacks can leak operator arrays (incomplete fix for CVE-2018-17183)

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Bug 1642578 - (CVE-2018-17961) CVE-2018-17961 ghostscript: saved execution stacks can leak operator arrays (incomplete fix for CVE-2018-17183)

Summary:	CVE-2018-17961 ghostscript: saved execution stacks can leak operator arrays (...

Status:	NEW

Aliases:	CVE-2018-17961

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

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=moderate,public=20181010,repor...
Keywords:	Security

Depends On:	1642579 1642580
Blocks:	1632473
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Reported:	2018-10-24 13:29 EDT by Laura Pardo
Modified:	2018-11-02 12:24 EDT (History)
CC List:	2 users (show)

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Description Laura Pardo 2018-10-24 13:29:35 EDT

Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors involving errorhandler setup. This issue exists because of an incomplete fix for CVE-2018-17183. 

References:
https://bugs.chromium.org/p/project-zero/issues/detail?id=1682&desc=2 
https://bugs.ghostscript.com/show_bug.cgi?id=699816
http://www.openwall.com/lists/oss-security/2018/10/09/4 

Upstream Patch:
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a54c9e61e7d0 
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a5a9bf8c6a63 
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a6807394bd94

Comment 1 Laura Pardo 2018-10-24 13:30:13 EDT

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1642579]

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