Bug 1870258 (CVE-2020-16303)

Summary: CVE-2020-16303 ghostscript: use-after-free in xps_finish_image_path() in devices/vector/gdevxps.c could result in a privilege escalation
Product: [Other] Security Response Reporter: Michael Kaplan <mkaplan>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: amasferr, chazlett, deekej, jlyle, mosvald, tcullum, twaugh, zdohnal
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: ghostscript 9.51 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-18 20:35:54 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1870263, 1872817, 1872818    
Bug Blocks: 1870273    

Description Michael Kaplan 2020-08-19 15:34:20 UTC 
A use-after-free vulnerability in xps_finish_image_path() in devices/vector/gdevxps.c of Artifex Software GhostScript v9.50 allows a remote attacker to escalate privileges via a crafted PDF file. This is fixed in v9.51.

References:

https://bugs.ghostscript.com/show_bug.cgi?id=701818
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=94d8955cb77
Comment 1 Michael Kaplan 2020-08-19 15:35:13 UTC 
Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1870263]
Comment 6 errata-xmlrpc 2021-05-18 15:37:22 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 20:35:54 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-2020-16303