An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"source": "CPE_STRING",
"vendor_product": "debian:debian_linux"
},
{
"extracted_events": [
{
"introduced": "33"
},
{
"last_affected": "33"
}
],
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
],
"source": "CPE_STRING",
"vendor_product": "fedoraproject:fedora"
}
]
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "16.8.0"
},
{
"introduced": "13.0"
},
{
"fixed": "13.37.1"
},
{
"introduced": "16.0"
},
{
"fixed": "16.14.1"
},
{
"introduced": "17.0"
},
{
"fixed": "17.8.1"
},
{
"introduced": "18.0"
},
{
"fixed": "18.0.1"
}
],
"cpe": [
"cpe:2.3:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:*",
"cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*"
],
"source": "CPE_RANGE"
}