As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that's not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2021-08/#CVE-2021-23969
Acknowledgments: Name: the Mozilla project Upstream: Masato Kinugawa
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:0655 https://access.redhat.com/errata/RHSA-2021:0655
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2021:0659 https://access.redhat.com/errata/RHSA-2021:0659
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:0657 https://access.redhat.com/errata/RHSA-2021:0657
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2021:0658 https://access.redhat.com/errata/RHSA-2021:0658
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:0660 https://access.redhat.com/errata/RHSA-2021:0660
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0656 https://access.redhat.com/errata/RHSA-2021:0656
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:0662 https://access.redhat.com/errata/RHSA-2021:0662
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0661 https://access.redhat.com/errata/RHSA-2021:0661
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-2021-23969