Bug 1920650 (CVE-2021-23960) - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
Summary: CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScrip...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-23960
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1919188 1919189 1919190 1919191 1919192 1920635 1920636 1920637 1920638 1920640
Blocks: 1919186
TreeView+ depends on / blocked
 
Reported: 2021-01-26 19:29 UTC by msiddiqu
Modified: 2021-03-04 11:02 UTC (History)
6 users (show)

Fixed In Version: firefox 78.7, thunderbird 78.7
Doc Type: If docs needed, set a value
Doc Text:
The Mozilla Foundation Security Advisory describes this flaw as: Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash.
Clone Of:
Environment:
Last Closed: 2021-01-27 20:41:43 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:0285 0 None None None 2021-01-27 16:47:30 UTC
Red Hat Product Errata RHSA-2021:0288 0 None None None 2021-01-27 17:55:20 UTC
Red Hat Product Errata RHSA-2021:0289 0 None None None 2021-01-27 18:00:17 UTC
Red Hat Product Errata RHSA-2021:0290 0 None None None 2021-01-27 18:35:25 UTC
Red Hat Product Errata RHSA-2021:0297 0 None None None 2021-01-28 16:10:12 UTC
Red Hat Product Errata RHSA-2021:0298 0 None None None 2021-01-28 16:30:02 UTC
Red Hat Product Errata RHSA-2021:0299 0 None None None 2021-01-28 16:35:35 UTC
Red Hat Product Errata RHSA-2021:0397 0 None None None 2021-02-03 10:43:12 UTC

Description msiddiqu 2021-01-26 19:29:52 UTC 
Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-04/#CVE-2021-23960
Comment 1 msiddiqu 2021-01-26 19:29:57 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Irvan Kurniawan
Comment 2 errata-xmlrpc 2021-01-27 16:47:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0285 https://access.redhat.com/errata/RHSA-2021:0285
Comment 3 errata-xmlrpc 2021-01-27 17:55:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0288 https://access.redhat.com/errata/RHSA-2021:0288
Comment 4 errata-xmlrpc 2021-01-27 18:00:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0289 https://access.redhat.com/errata/RHSA-2021:0289
Comment 5 errata-xmlrpc 2021-01-27 18:35:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:0290 https://access.redhat.com/errata/RHSA-2021:0290
Comment 6 Product Security DevOps Team 2021-01-27 20:41:43 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-2021-23960
Comment 7 errata-xmlrpc 2021-01-28 16:10:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:0297 https://access.redhat.com/errata/RHSA-2021:0297
Comment 8 errata-xmlrpc 2021-01-28 16:30:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0298 https://access.redhat.com/errata/RHSA-2021:0298
Comment 9 errata-xmlrpc 2021-01-28 16:35:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0299 https://access.redhat.com/errata/RHSA-2021:0299
Comment 10 errata-xmlrpc 2021-02-03 10:43:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0397 https://access.redhat.com/errata/RHSA-2021:0397
Note You need to log in before you can comment on or make changes to this bug.