LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverify_result is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "2.5.1"
},
{
"introduced": "0"
},
{
"last_affected": "2.5.2"
},
{
"introduced": "0"
},
{
"last_affected": "2.5.3"
}
]
}