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.
{
"versions": [
{
"introduced": "1.0.0"
},
{
"last_affected": "1.3.2"
},
{
"introduced": "0"
},
{
"last_affected": "1.4.0-NA"
},
{
"introduced": "0"
},
{
"last_affected": "1.4.0-beta0"
},
{
"introduced": "0"
},
{
"last_affected": "1.4.0-beta1"
}
]
}