Bug 1652893 (CVE-2018-16863)

Summary: CVE-2018-16863 ghostscript: incomplete fix for CVE-2018-16509
Product: [Other] Security Response Reporter: Cedric Buissart <cbuissar>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: cperry, mosvald, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
It was found that RHSA-2018:2918 did not fully fix CVE-2018-16509. An attacker could possibly exploit another variant of the flaw and bypass the -dSAFER protection to, for example, execute arbitrary shell commands via a specially crafted PostScript document.
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-12-04 15:04:38 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: 1652901, 1652902    
Bug Blocks: 1652892    

Description Cedric Buissart 2018-11-23 12:20:50 UTC
It was found that the fix for CVE-2018-16509 provided in Red Hat Enterprise Linux 7 was not sufficient.

Comment 10 Cedric Buissart 2018-12-03 14:56:04 UTC
The full fix for CVE-2018-16509 (bug 1619748) consists of the following 4 upstream patches:

The RHSA-2018:2918 erratum for Red Hat Enterprise Linux 7 only included the first 2 fixes, and hence failed to fix CVE-2018-16509 completely.

Comment 11 errata-xmlrpc 2018-12-03 23:52:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3761 https://access.redhat.com/errata/RHSA-2018:3761

Comment 12 Cedric Buissart 2019-08-14 07:03:16 UTC

This vulnerability affects only Red Hat Enterprise Linux version 7. Red Hat Enterprise Linux version 6 is not affected by this vulnerability because the set of fixes for CVE-2018-16509, released via  RHSA-2018:3760, was complete.