OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.
| Software | From | Fixed in |
|---|---|---|
| trusteddomain / opendmarc | 1.4.0-beta1 | 1.4.0-beta1.x |
| trusteddomain / opendmarc | 1.0.0 | 1.3.2.x |
| trusteddomain / opendmarc | 1.4.0 | 1.4.0.x |
| trusteddomain / opendmarc | 1.4.0-beta0 | 1.4.0-beta0.x |
| fedoraproject / fedora | 33 | 33.x |
| fedoraproject / fedora | 34 | 34.x |