A TLS certificate validation flaw was found in Elastic APM agent for Ruby versions before 2.9.0. When specifying a trusted server CA certificate via the ‘server_ca_cert’ setting, the Ruby agent would not properly verify the certificate returned by the APM server. This could result in a man in the middle style attack against the Ruby agent.
[
{
"product": "Elastic APM agent for Ruby",
"vendor": "Elastic",
"versions": [
{
"status": "affected",
"version": "before 2.9.0"
}
]
}
]