---
title: Security Bulletin NR18-04
source: https://docs.newrelic.com/docs/security/new-relic-security/security-bulletins/security-bulletin-nr18-04
---

## Summary

A security update for the .NET agent to prevent the capture of error messages during an error trace or error event when high-security mode is enabled.

**Release date:** Jan 22, 2018

**Vulnerability identifier:** NR18-04

**Priority:** Medium

## Affected software [#affected]

The following New Relic agent versions are affected:

| **Name**   | **Affected version** | **Notes**   | **Remediated version**                                                                        |
| ---------- | -------------------- | ----------- | --------------------------------------------------------------------------------------------- |
| .NET agent |                      | Error Trace | [7.0.2.0](https://docs.newrelic.com/docs/release-notes/agent-release-notes/net-release-notes) |

## Vulnerability information [#vuln-info]

New Relic’s .NET error collection captures information about uncaught exceptions and sends them to New Relic. If High-security mode is enabled, the agent should not capture details of the error messages. This release fixes the agent for error traces and error events so that the error message is not sent to New Relic when High-security mode is enabled.

### Mitigating factors [#factors]

-   This is a special feature of [High-security mode](https://docs.newrelic.com/docs/agents/net-agent/configuration/net-agent-configuration#high_security_mode).

## Workarounds

Disable [error collection](https://docs.newrelic.com/docs/agents/net-agent/configuration/net-agent-configuration#error_collector) in the agent configuration or [ignore specific exceptions](https://docs.newrelic.com/docs/agents/net-agent/configuration/net-agent-configuration#error-ignoreErrors) in the configuration.

## Report security vulnerabilities to New Relic [#report]

New Relic is committed to the security of our customers and their data. If you believe you have found a security vulnerability in one of our products or websites, we welcome and greatly appreciate you reporting it to New Relic's coordinated disclosure program. For more information, see [Reporting security vulnerabilities](https://docs.newrelic.com/docs/security/new-relic-security/data-privacy/reporting-security-vulnerabilities).

## For more help [#more_help]

Additional documentation resources include:.

-   [Upgrade the .NET agent](https://docs.newrelic.com/docs/agents/net-agent/installation/update-net-agent)
-   [NR Security](https://newrelic.com/security)