Bug 1870159 (CVE-2020-16310) - CVE-2020-16310 ghostscript: division by zero in dot24_print_page() in devices/gdevdm24.c could result in a DoS
Summary: CVE-2020-16310 ghostscript: division by zero in dot24_print_page() in devices...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-16310
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1870160 1870835 1870836
Blocks: 1870273
TreeView+ depends on / blocked
 
Reported: 2020-08-19 13:05 UTC by Michael Kaplan
Modified: 2021-05-18 20:34 UTC (History)
6 users (show)

Fixed In Version: ghostscript 9.51
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Environment:
Last Closed: 2021-05-18 20:34:53 UTC
Embargoed:

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Description Michael Kaplan 2020-08-19 13:05:22 UTC 
A division by zero vulnerability in dot24_print_page() in devices/gdevdm24.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted PDF file. This is fixed in v9.51.

References:

https://bugs.ghostscript.com/show_bug.cgi?id=701828
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=eaba1d97b62831b42c51840cc8ee2bc4576c942e
Comment 1 Michael Kaplan 2020-08-19 13:06:09 UTC 
Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1870160]
Comment 4 Todd Cullum 2020-08-21 14:37:24 UTC 
Flaw summary:

In dot24_print_page(), bytes_per_space is a divisor that can be set to 0 when processing very low resolutions, causing a divide-by-zero condition which can result in denial of service when handling a specially crafted input file.
Comment 5 errata-xmlrpc 2021-05-18 15:36:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1852 https://access.redhat.com/errata/RHSA-2021:1852
Comment 6 Product Security DevOps Team 2021-05-18 20:34:53 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-16310
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