Bug 1690677 (CVE-2019-9792) - CVE-2019-9792 Mozilla: IonMonkey leaks JS_OPTIMIZED_OUT magic value to script
Summary: CVE-2019-9792 Mozilla: IonMonkey leaks JS_OPTIMIZED_OUT magic value to script
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-9792
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1688866 1688867 1688868 1690494 1690495 1690496 1690692 1703888 1703893 1703894
Blocks: 1688735 1690493
TreeView+ depends on / blocked
 
Reported: 2019-03-20 02:14 UTC by Doran Moppert
Modified: 2021-02-26 05:25 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-10 10:51:22 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:0622 0 None None None 2019-03-20 15:11:58 UTC
Red Hat Product Errata RHSA-2019:0623 0 None None None 2019-03-20 15:21:51 UTC
Red Hat Product Errata RHSA-2019:0680 0 None None None 2019-03-28 14:48:18 UTC
Red Hat Product Errata RHSA-2019:0681 0 None None None 2019-03-28 14:49:41 UTC
Red Hat Product Errata RHSA-2019:0966 0 None None None 2019-05-07 04:18:03 UTC
Red Hat Product Errata RHSA-2019:1144 0 None None None 2019-05-13 05:03:26 UTC

Description Doran Moppert 2019-03-20 02:14:27 UTC 
The IonMonkey just-in-time (JIT) compiler can leak an internal `JS_OPTIMIZED_OUT` magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-08/#CVE-2019-9792
Comment 1 Doran Moppert 2019-03-20 02:14:30 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Samuel Groß (Google Project Zero)
Comment 3 errata-xmlrpc 2019-03-20 15:11:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:0622 https://access.redhat.com/errata/RHSA-2019:0622
Comment 4 errata-xmlrpc 2019-03-20 15:21:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:0623 https://access.redhat.com/errata/RHSA-2019:0623
Comment 5 Doran Moppert 2019-03-26 06:23:35 UTC 
Statement:

In general, this flaw be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.
Comment 6 errata-xmlrpc 2019-03-28 14:48:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:0680 https://access.redhat.com/errata/RHSA-2019:0680
Comment 7 errata-xmlrpc 2019-03-28 14:49:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:0681 https://access.redhat.com/errata/RHSA-2019:0681
Comment 9 errata-xmlrpc 2019-05-07 04:18:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:0966 https://access.redhat.com/errata/RHSA-2019:0966
Comment 10 errata-xmlrpc 2019-05-13 05:03:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:1144 https://access.redhat.com/errata/RHSA-2019:1144
Note You need to log in before you can comment on or make changes to this bug.