Bug 1870179 (CVE-2020-16295) - CVE-2020-16295 ghostscript: NULL pointer dereference in clj_media_size() in devices/gdevclj.c could result in a DoS
Summary: CVE-2020-16295 ghostscript: NULL pointer dereference in clj_media_size() in d...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-16295
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: 1870180 1872046 1872047
Blocks: 1870273
TreeView+ depends on / blocked
 
Reported: 2020-08-19 13:28 UTC by Michael Kaplan
Modified: 2021-05-18 20:35 UTC (History)
7 users (show)

Fixed In Version: ghostscript 9.51
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2021-05-18 20:35:15 UTC


Attachments (Terms of Use)

Description Michael Kaplan 2020-08-19 13:28:03 UTC
A null pointer dereference vulnerability in clj_media_size() in devices/gdevclj.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.

Reference:

http://git.ghostscript.com/?p=ghostpdl.git;h=2c2dc335c212750e0fb8ae157063bc06cafa8d3e
https://bugs.ghostscript.com/show_bug.cgi?id=701796

Comment 1 Michael Kaplan 2020-08-19 13:28:21 UTC
Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1870180]

Comment 3 Todd Cullum 2020-08-24 22:02:33 UTC
Flaw summary:

This flaw is caused by an incorrect test for existence of parameter HWResolution in /devices/gdevclj.c's clj_media_size() routine. If HWResolution does not exist, the if statement test can pass and lead to a null pointer dereference or divide by zero error, crashing the process.

Comment 4 Todd Cullum 2020-08-24 22:03:08 UTC
Mitigation:

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Comment 6 errata-xmlrpc 2021-05-18 15:36:51 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 7 Product Security DevOps Team 2021-05-18 20:35:15 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-2020-16295


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