Bug 1619750 (CVE-2018-16513) - CVE-2018-16513 ghostscript: setcolor missing type check (699655)
Summary: CVE-2018-16513 ghostscript: setcolor missing type check (699655)
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-16513
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:
Blocks: 1619570
TreeView+ depends on / blocked
 
Reported: 2018-08-21 16:07 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 did not properly validate the operands passed to the setcolor function. An attacker could possibly exploit this to bypass the -dSAFER protection and crash ghostscript or, possibly, execute arbitrary code in the ghostscript context via a specially crafted PostScript document.
Clone Of:
Environment:
Last Closed: 2018-09-19 09:38:48 UTC
Embargoed:

Attachments (Terms of Use)

Description Stefan Cornelius 2018-08-21 16:07:51 UTC 
It was discovered that the ghostscript did not properly validate the operands passed to the setcolor function. A specially crafted PostScript document could possibly exploit this to crash ghostscript or, possibly, execute arbitrary code in the context of the ghostscript process.
Comment 1 Stefan Cornelius 2018-08-21 16:25:34 UTC 
External References:

http://seclists.org/oss-sec/2018/q3/142
Comment 2 Stefan Cornelius 2018-08-22 10:19:46 UTC 
Mitigation:

Please see https://bugzilla.redhat.com/show_bug.cgi?id=1619748#c3
Comment 3 Stefan Cornelius 2018-08-23 14:25:58 UTC 
Patch:
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=b326a716
Comment 4 Stefan Cornelius 2018-08-23 15:36:40 UTC 
Acknowledgments:

Name: Tavis Ormandy (Google Project Zero)
Comment 6 Stefan Cornelius 2018-09-19 09:39:03 UTC 
Statement:

This issue did not affect the versions of ghostscript as shipped with Red Hat Enterprise Linux 5, 6, and 7.
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