Bug 1898735 (CVE-2020-26958) - CVE-2020-26958 Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions
Summary: CVE-2020-26958 Mozilla: Requests intercepted through ServiceWorkers lacked MI...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-26958
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: 1895993 1895994 1895995 1895996 1895997 1895998 1895999 1898749 1898750 1898751 1898752 1898753 1898754 1898755
Blocks: 1895990
TreeView+ depends on / blocked
 
Reported: 2020-11-18 00:43 UTC by Doran Moppert
Modified: 2021-02-16 18:53 UTC (History)
6 users (show)

Fixed In Version: firefox 78.5, thunderbird 78.5
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Clone Of:
Environment:
Last Closed: 2020-11-30 11:34:16 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:5231 0 None None None 2020-11-30 08:40:13 UTC
Red Hat Product Errata RHSA-2020:5232 0 None None None 2020-11-30 08:53:28 UTC
Red Hat Product Errata RHSA-2020:5233 0 None None None 2020-11-30 08:45:56 UTC
Red Hat Product Errata RHSA-2020:5234 0 None None None 2020-11-30 08:57:58 UTC
Red Hat Product Errata RHSA-2020:5235 0 None None None 2020-11-30 18:25:23 UTC
Red Hat Product Errata RHSA-2020:5236 0 None None None 2020-11-30 08:49:38 UTC
Red Hat Product Errata RHSA-2020:5237 0 None None None 2020-11-30 10:38:43 UTC
Red Hat Product Errata RHSA-2020:5238 0 None None None 2020-11-30 08:58:39 UTC
Red Hat Product Errata RHSA-2020:5239 0 None None None 2020-11-30 23:05:24 UTC
Red Hat Product Errata RHSA-2020:5240 0 None None None 2020-11-30 08:35:37 UTC
Red Hat Product Errata RHSA-2020:5257 0 None None None 2020-11-30 19:42:46 UTC
Red Hat Product Errata RHSA-2020:5314 0 None None None 2020-12-01 15:24:42 UTC

Description Doran Moppert 2020-11-18 00:43:16 UTC 
Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-51/#CVE-2020-26958
Comment 1 Doran Moppert 2020-11-18 00:43:21 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Moti Harmats
Comment 12 errata-xmlrpc 2020-11-30 08:35:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5240 https://access.redhat.com/errata/RHSA-2020:5240
Comment 13 errata-xmlrpc 2020-11-30 08:40:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5231 https://access.redhat.com/errata/RHSA-2020:5231
Comment 14 errata-xmlrpc 2020-11-30 08:45:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5233 https://access.redhat.com/errata/RHSA-2020:5233
Comment 15 errata-xmlrpc 2020-11-30 08:50:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5236 https://access.redhat.com/errata/RHSA-2020:5236
Comment 16 errata-xmlrpc 2020-11-30 08:53:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5232 https://access.redhat.com/errata/RHSA-2020:5232
Comment 17 errata-xmlrpc 2020-11-30 08:57:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5234 https://access.redhat.com/errata/RHSA-2020:5234
Comment 18 errata-xmlrpc 2020-11-30 08:58:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:5238 https://access.redhat.com/errata/RHSA-2020:5238
Comment 19 errata-xmlrpc 2020-11-30 10:38:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5237 https://access.redhat.com/errata/RHSA-2020:5237
Comment 20 Product Security DevOps Team 2020-11-30 11:34:16 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-2020-26958
Comment 21 errata-xmlrpc 2020-11-30 18:25:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5235 https://access.redhat.com/errata/RHSA-2020:5235
Comment 22 errata-xmlrpc 2020-11-30 19:42:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:5257 https://access.redhat.com/errata/RHSA-2020:5257
Comment 23 errata-xmlrpc 2020-11-30 23:05:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5239 https://access.redhat.com/errata/RHSA-2020:5239
Comment 24 errata-xmlrpc 2020-12-01 15:24:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5314 https://access.redhat.com/errata/RHSA-2020:5314
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