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Date: Thu, 27 Oct 2016 13:31:14 +0100
From: Mark Thomas <>
Subject: [SECURITY] CVE-2016-6794 Apache Tomcat Security System Property

CVE-2016-6794 Apache Tomcat System Property Disclosure

Severity: Low

Vendor: The Apache Software Foundation

Versions Affected:
Apache Tomcat 9.0.0.M1 to 9.0.0.M9
Apache Tomcat 8.5.0 to 8.5.4
Apache Tomcat 8.0.0.RC1 to 8.0.36
Apache Tomcat 7.0.0 to 7.0.70
Apache Tomcat 6.0.0 to 6.0.45
Earlier, unsupported versions may also be affected.

When a SecurityManager is configured, a web application's ability to
read system properties should be controlled by the SecurityManager.
Tomcat's system property replacement feature for configuration files
could be used by a malicious web application to bypass the
SecurityManager and read system properties that should not be visible.

Users of affected versions should apply one of the following mitigations
- Upgrade to Apache Tomcat 9.0.0.M10 or later
- Upgrade to Apache Tomcat 8.5.5 or later
- Upgrade to Apache Tomcat 8.0.37 or later
- Upgrade to Apache Tomcat 7.0.72 or later
  (Apache Tomcat 7.0.71 has the fix but was not released)
- Upgrade to Apache Tomcat 6.0.47 or later
  (Apache Tomcat 6.0.46 has the fix but was not released)

This issue was discovered by the Apache Tomcat Security Team.


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