An attacker who is permitted to send zone data to a server via zone transfer can exploit this to intentionally trigger the assertion failure with a specially constructed zone, denying service to clients.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "20.04"
},
{
"last_affected": "20.04"
}
],
"vendor_product": "canonical:ubuntu_linux",
"source": "CPE_STRING",
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"
]
},
{
"extracted_events": [
{
"introduced": "15.1"
},
{
"last_affected": "15.1"
},
{
"introduced": "15.2"
},
{
"last_affected": "15.2"
}
],
"vendor_product": "opensuse:leap",
"source": "CPE_STRING",
"cpes": [
"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
"cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"
]
}
]
}