Bug 1898738 (CVE-2020-26961)

Summary: CVE-2020-26961 Mozilla: DoH did not filter IPv4 mapped IP Addresses
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: cschalle, erack, gecko-bugs-nobody, jhorak, stransky, tpopela
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: firefox 78.5, thunderbird 78.5 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-30 11:34:28 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: 1895993, 1895994, 1895995, 1895996, 1895997, 1895998, 1895999, 1898749, 1898750, 1898751, 1898752, 1898753, 1898754, 1898755    
Bug Blocks: 1895990    

Description Doran Moppert 2020-11-18 00:43:44 UTC
When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-51/#CVE-2020-26961

Comment 1 Doran Moppert 2020-11-18 00:43:48 UTC
Acknowledgments:

Name: the Mozilla project
Upstream: Gabriel Corona

Comment 12 errata-xmlrpc 2020-11-30 08:35:42 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 08:40:19 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 08:46:03 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 08:49:48 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 08:54:01 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 08:58:04 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 08:58:43 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 10:38:49 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 11:34:28 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-2020-26961

Comment 21 errata-xmlrpc 2020-11-30 18:25:54 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 19:42:51 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 23:05:29 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 15:24:47 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