CVE-2019-19331

knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).

knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).

knot-resolver versiones anteriores a 4.3.0, es vulnerable a una denegación de servicio por medio de una alta utilización de la CPU. Las respuestas de DNS con muchos registros de recursos podrían ser procesadas de manera muy ineficiente, en casos extremos, tomar incluso varios segundos de CPU para cada mensaje no almacenado en caché. Por ejemplo, algunos miles de registros A pueden ser agrupados en un mensaje DNS (el límite es 64kB).