Bug 1908023 (CVE-2020-26973)

Summary: CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: cschalle, erack, gecko-bugs-nobody, jhorak, stransky, tpopela
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: firefox 78.6, thunderbird 78.6 Doc Type: If docs needed, set a value
Doc Text:
The Mozilla Foundation Security Advisory describes this flaw as: Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-12-16 10:18:39 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: 1906545, 1906546, 1906547, 1906548, 1906549, 1906550, 1906553, 1906554, 1906555, 1906556, 1906557, 1906558    
Bug Blocks: 1906543    

Description Guilherme de Almeida Suckevicz 2020-12-15 17:45:21 UTC
Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-55/#CVE-2020-26973

Comment 1 Guilherme de Almeida Suckevicz 2020-12-15 17:45:25 UTC
Acknowledgments:

Name: the Mozilla project
Upstream: Kai Engert

Comment 2 errata-xmlrpc 2020-12-16 07:52:29 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5564 https://access.redhat.com/errata/RHSA-2020:5564

Comment 3 errata-xmlrpc 2020-12-16 07:54:52 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5562 https://access.redhat.com/errata/RHSA-2020:5562

Comment 4 errata-xmlrpc 2020-12-16 08:01:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5563 https://access.redhat.com/errata/RHSA-2020:5563

Comment 5 errata-xmlrpc 2020-12-16 08:14:32 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5565 https://access.redhat.com/errata/RHSA-2020:5565

Comment 6 errata-xmlrpc 2020-12-16 08:22:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5561 https://access.redhat.com/errata/RHSA-2020:5561

Comment 7 Product Security DevOps Team 2020-12-16 10:18:39 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-2020-26973

Comment 8 errata-xmlrpc 2020-12-17 15:09:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5618 https://access.redhat.com/errata/RHSA-2020:5618

Comment 9 errata-xmlrpc 2020-12-17 16:19:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5622 https://access.redhat.com/errata/RHSA-2020:5622

Comment 10 errata-xmlrpc 2020-12-17 16:23:11 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5624 https://access.redhat.com/errata/RHSA-2020:5624

Comment 11 errata-xmlrpc 2020-12-21 12:31:35 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5644 https://access.redhat.com/errata/RHSA-2020:5644

Comment 12 errata-xmlrpc 2020-12-21 13:35:51 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5645 https://access.redhat.com/errata/RHSA-2020:5645