Bug 1920648 (CVE-2021-23954) - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
Summary: CVE-2021-23954 Mozilla: Type confusion when using logical assignment operator...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-23954
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: 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: Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash.
Clone Of:
Environment:
Last Closed: 2021-01-27 20:41:37 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 16:47:27 UTC
Red Hat Product Errata RHSA-2021:0288 0 None None None 2021-01-27 17:55:13 UTC
Red Hat Product Errata RHSA-2021:0289 0 None None None 2021-01-27 18:00:13 UTC
Red Hat Product Errata RHSA-2021:0290 0 None None None 2021-01-27 18:35:20 UTC
Red Hat Product Errata RHSA-2021:0297 0 None None None 2021-01-28 16:10:07 UTC
Red Hat Product Errata RHSA-2021:0298 0 None None None 2021-01-28 16:29:56 UTC
Red Hat Product Errata RHSA-2021:0299 0 None None None 2021-01-28 16:35:33 UTC
Red Hat Product Errata RHSA-2021:0397 0 None None None 2021-02-03 10:43:06 UTC

Description msiddiqu 2021-01-26 19:29:30 UTC 
Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-04/#CVE-2021-23954
Comment 1 msiddiqu 2021-01-26 19:29:35 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Gary Kwong
Comment 2 errata-xmlrpc 2021-01-27 16:48:08 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 17:55:12 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 18:00:11 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 18:35:17 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 20:41:37 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-2021-23954
Comment 7 errata-xmlrpc 2021-01-28 16:10:05 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 16:29:55 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 16:35:29 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 10:43:02 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
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