OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO field is inconsistent with the MAIL FROM field.
OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO field is inconsistent with the MAIL FROM field.
https://bugs.launchpad.net/pypolicyd-spf/+bug/1838816 https://sourceforge.net/p/opendmarc/tickets/235/ https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf
Vulmon