An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "16.17.0"
},
{
"introduced": "0"
},
{
"last_affected": "16.18.0"
},
{
"introduced": "0"
},
{
"last_affected": "16.19.0"
},
{
"introduced": "0"
},
{
"last_affected": "18.3.0"
},
{
"introduced": "0"
},
{
"last_affected": "18.4.0"
},
{
"introduced": "0"
},
{
"last_affected": "18.5.0"
}
]
}