Bug 1951368 (CVE-2021-23999)

Summary: CVE-2021-23999 Mozilla: Blob URLs may have been granted additional privileges
Product: [Other] Security Response Reporter: Doran Moppert <dmoppert>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: erack, jhorak, nobody, stransky, tpopela
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: firefox 78.10, thunderbird 78.10 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-04-26 10:47:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1951356, 1951357, 1951358, 1951359, 1951360, 1951361, 1951375, 1951376, 1951377, 1951378, 1951379, 1951380    
Bug Blocks: 1951230    

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