Logstash versions prior to 2.3.3, when using the Netflow Codec plugin, a remote attacker crafting malicious Netflow v5, Netflow v9 or IPFIX packets could perform a denial of service attack on the Logstash instance. The errors resulting from these crafted inputs are not handled by the codec and can cause the Logstash process to exit.
{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "2.3.2"
}
],
"cpe": "cpe:2.3:a:elastic:logstash:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE"
}