Bug 1951367 (CVE-2021-23961) - CVE-2021-23961 Mozilla: More internal network hosts could have been probed by a malicious webpage
Summary: CVE-2021-23961 Mozilla: More internal network hosts could have been probed by...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-23961
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: 1951356 1951357 1951358 1951359 1951360 1951361 1951375 1951376 1951377 1951378 1951379 1951380
Blocks: 1951230
TreeView+ depends on / blocked
 
Reported: 2021-04-20 02:53 UTC by Doran Moppert
Modified: 2021-04-27 03:53 UTC (History)
5 users (show)

Fixed In Version: firefox 78.10, thunderbird 78.10
Clone Of:
Environment:
Last Closed: 2021-04-26 10:47:44 UTC
Embargoed:

Attachments (Terms of Use)

Description Doran Moppert 2021-04-20 02:53:18 UTC 
Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-23961
Comment 1 Doran Moppert 2021-04-20 02:53:22 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Samy Kamkar, Ben Seri, Gregory Vishnepolsky
Comment 2 errata-xmlrpc 2021-04-26 05:46:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1353 https://access.redhat.com/errata/RHSA-2021:1353
Comment 3 errata-xmlrpc 2021-04-26 05:48:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:1351 https://access.redhat.com/errata/RHSA-2021:1351
Comment 4 errata-xmlrpc 2021-04-26 06:00:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:1352 https://access.redhat.com/errata/RHSA-2021:1352
Comment 5 errata-xmlrpc 2021-04-26 06:16:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:1350 https://access.redhat.com/errata/RHSA-2021:1350
Comment 6 Product Security DevOps Team 2021-04-26 10:47:44 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-2021-23961
Comment 7 errata-xmlrpc 2021-04-26 11:14:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:1362 https://access.redhat.com/errata/RHSA-2021:1362
Comment 8 errata-xmlrpc 2021-04-26 11:16:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1360 https://access.redhat.com/errata/RHSA-2021:1360
Comment 9 errata-xmlrpc 2021-04-26 11:31:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:1361 https://access.redhat.com/errata/RHSA-2021:1361
Comment 10 errata-xmlrpc 2021-04-26 11:49:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:1363 https://access.redhat.com/errata/RHSA-2021:1363
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