The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.
{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "2.2.27"
}
],
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*"
}