Bug 1873239 (CVE-2020-14373)

Summary: CVE-2020-14373 ghostscript: use-after-free vulnerability in igc_reloc_struct_ptr() could result in DoS
Product: [Other] Security Response Reporter: Todd Cullum <tcullum>
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, mosvald, security-response-team, zdohnal
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: ghostscript 9.26rc1 Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in igc_reloc_struct_ptr() of psi/igc.c of Ghostscript-9.25. This flaw allows a local attacker to supply a specially crafted PDF file, causing a denial of service. The highest threat from this vulnerability is to system availability.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-18 20:36:06 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1874585, 1874586    
Bug Blocks: 1873243    

Description Todd Cullum 2020-08-27 17:03:52 UTC
When a crafted PDF is supplied to ghostscript-9.25, it triggers a use-after-free in igc_reloc_struct_ptr() of psi/igc.c on line 1279.

Comment 5 Todd Cullum 2020-09-01 16:17:54 UTC

Name: Todd Cullum (Red Hat)
Upstream: Suhwan

Comment 6 Todd Cullum 2020-09-01 16:26:13 UTC
Flaw summary:

Improper handling of font could cause a use-after-free in igc_reloc_struct_ptr() when an attacker provided a crafted PDF file. The aforementioned upstream patch resolved this flaw.

Comment 9 errata-xmlrpc 2021-05-18 15:37:28 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 10 Product Security DevOps Team 2021-05-18 20:36:06 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):