Bug 1951368 (CVE-2021-23999) - CVE-2021-23999 Mozilla: Blob URLs may have been granted additional privileges
Summary: CVE-2021-23999 Mozilla: Blob URLs may have been granted additional privileges
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-23999
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: 2021-07-03 12:11 UTC (History)
5 users (show)

Fixed In Version: firefox 78.10, thunderbird 78.10
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2021-04-26 10:47:49 UTC
Embargoed:

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Description Doran Moppert 2021-04-20 02:53:28 UTC 
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-23999
Comment 1 Doran Moppert 2021-04-20 02:53:32 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Nika Layzell
Comment 2 errata-xmlrpc 2021-04-26 05:46:27 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 05:48:49 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 10:47:49 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-2021-23999
Comment 7 errata-xmlrpc 2021-04-26 11:14:40 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 11:31:53 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 11:49:30 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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