When displaying the sender of an email, and the sender name contained the Braille Pattern Blank space character multiple times, Thunderbird would have displayed all the spaces. This could have been used by an attacker to send an email message with the attacker's digital signature, that was shown with an arbitrary sender email address chosen by the attacker. If the sender name started with a false email address, followed by many Braille space characters, the attacker's email address was not visible. Because Thunderbird compared the invisible sender address with the signature's email address, if the signing key or certificate was accepted by Thunderbird, the email was shown as having a valid digital signature. External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2022-22/#CVE-2022-1834
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Extended Update Support Via RHSA-2022:4889 https://access.redhat.com/errata/RHSA-2022:4889
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2022:4891 https://access.redhat.com/errata/RHSA-2022:4891
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions Via RHSA-2022:4888 https://access.redhat.com/errata/RHSA-2022:4888
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:4887 https://access.redhat.com/errata/RHSA-2022:4887
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2022:4892 https://access.redhat.com/errata/RHSA-2022:4892
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2022:4890 https://access.redhat.com/errata/RHSA-2022:4890
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-2022-1834