# Elastic APM agent for Ruby 2.9.0 security update

**URL:** <https://discuss.elastic.co/t/elastic-apm-agent-for-ruby-2-9-0-security-update/192960>\
**Category:** Security Announcements\
**Created:** [July 30, 2019, 6:11pm UTC](https://discuss.elastic.co/t/elastic-apm-agent-for-ruby-2-9-0-security-update/192960 "2019-07-30T18:11:36Z")\
**Posts on this page:** 1\
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**Author:** ![joshbressers](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/joshbressers/32/42332_2.png) [@joshbressers](https://discuss.elastic.co/u/joshbressers)\
**Post date:** [July 30, 2019, 6:11pm UTC](https://discuss.elastic.co/t/elastic-apm-agent-for-ruby-2-9-0-security-update/192960/1 "2019-07-30T18:11:36Z")

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**Elastic APM agent for Ruby client authentication flaw (ESA-2019-08)**  
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.

**Affected Versions**  
All Elastic APM agent for Ruby versions before 2.9.0

**Solutions and Mitigations:**  
Users should upgrade to Elastic APM agent for Ruby version 2.9.0 or later.

**CVE ID:** CVE-2019-7615

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_[View the full topic](https://discuss.elastic.co/t/elastic-apm-agent-for-ruby-2-9-0-security-update/192960)._