Bug 1673304 (CVE-2019-3839) - CVE-2019-3839 ghostscript: missing attack vector protections for CVE-2019-6116
Summary: CVE-2019-3839 ghostscript: missing attack vector protections for CVE-2019-6116
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-3839
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1673398 1673399 1692798 1693807 1747956
Blocks: 1673302
TreeView+ depends on / blocked
 
Reported: 2019-02-07 10:24 UTC by Cedric Buissart 🐶
Modified: 2019-09-29 15:07 UTC (History)
5 users (show)

Fixed In Version: ghostscript 9.28
Doc Type: If docs needed, set a value
Doc Text:
It was found that some privileged operators remained accessible from various places after the CVE-2019-6116 fix. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER.
Clone Of:
Environment:
Last Closed: 2019-05-07 19:21:08 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2019:1428 None None None 2019-06-10 20:54:01 UTC
Red Hat Product Errata RHSA-2019:0971 None None None 2019-05-07 04:18:43 UTC
Red Hat Product Errata RHSA-2019:1017 None None None 2019-05-07 17:05:10 UTC

Description Cedric Buissart 🐶 2019-02-07 10:24:00 UTC
It was found that some additional operators and dictionaries were needed to be hidden in order to prevent other CVE-2019-6116 attacks.

Comment 5 Cedric Buissart 🐶 2019-02-15 10:24:11 UTC
Mitigation:

Please refer to the "Mitigation" section of CVE-2018-16509 : https://access.redhat.com/security/cve/cve-2018-16509

Comment 10 Cedric Buissart 🐶 2019-05-02 16:15:07 UTC
Additional commit required for CVE-2019-6116 :
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=4ec9ca7  
   + http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=db24f25 to prevent pdf2dsc regression

Comment 11 errata-xmlrpc 2019-05-07 04:18:42 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:0971 https://access.redhat.com/errata/RHSA-2019:0971

Comment 12 errata-xmlrpc 2019-05-07 17:05:09 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:1017 https://access.redhat.com/errata/RHSA-2019:1017

Comment 13 Cedric Buissart 🐶 2019-09-02 10:48:38 UTC
Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1747956]


Note You need to log in before you can comment on or make changes to this bug.