CVE-2016-6794: Apache Tomcat System Property Disclosure Vulnerability

MODERATE
Advisory Identifier: GHSA-2rvf-329f-p99g
Share
CVSS 5.3
Published
Advisory Summary

CVE-2016-6794 is a MODERATE (CVSS 5.3) system property disclosure vulnerability (General Security Weakness) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves system property disclosure in apache tomcat. Remediation is available by upgrading affected packages to version 6.0.47, 7.0.72, 8.0.37, 8.5.5, 9.0.0.M10.

CVE-2016-6794 at a Glance

CVE Identifier CVE-2016-6794
GHSA Identifier GHSA-2rvf-329f-p99g
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification General Security Weakness
Affected Product Apache Tomcat
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2016-6794

To remediate this vulnerability, upgrade all affected Apache Tomcat dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.tomcat:tomcat fixed: 6.0.47 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>6.0.47</version>
</dependency>
org.apache.tomcat:tomcat fixed: 7.0.72 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>7.0.72</version>
</dependency>
org.apache.tomcat:tomcat fixed: 8.0.37 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>8.0.37</version>
</dependency>
org.apache.tomcat:tomcat fixed: 8.5.5 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>8.5.5</version>
</dependency>
org.apache.tomcat:tomcat fixed: 9.0.0.M10 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>9.0.0.M10</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.tomcat

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2016-6794, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.tomcat

Analyze the terminal output to locate any version of Apache Tomcat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.0.47), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.tomcat command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Apache Tomcat, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

When a SecurityManager is configured, a web application's ability to read system properties should be controlled by the SecurityManager. In Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70, 6.0.0 to 6.0.45 the 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.

CVE-2016-6794 Affected Apache Tomcat Versions

5 component(s)
Fixed Versions:
6.0.477.0.728.0.378.5.59.0.0.M10
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 6.0.0
< 6.0.47
6.0.47
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 7.0.0
< 7.0.72
7.0.72
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 8.0.0
< 8.0.37
8.0.37
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 8.1.0
< 8.5.5
8.5.5
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 9.0.0.M1
< 9.0.0.M10
9.0.0.M10

References

NVD — CVE-2016-6794 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6794
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/0b41766456b1980e4f809e13ad6dc9fa912bae7e
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/c1660182010b4255c21c874d69c124370a67784a
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/f8db078f1e6e8b225f8344e63595113ca34cd408
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat80/commit/ae6163a4f230bc679abfc93e048ff92996badad6
lists.apache.org/thread.html/8885587... WEB
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/8885587... WEB
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/b5e3f51... WEB
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/b5e3f51... WEB
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/b84ad12... WEB
https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/b84ad12... WEB
https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/b8a1bf1... WEB
https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/b8a1bf1... WEB
https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r03c597... WEB
https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r03c597... WEB
https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r587e50... WEB
https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r587e50... WEB
https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r9136ff... WEB
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r9136ff... WEB
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c@%3Cdev.tomcat.apache.org%3E
Apache Tomcat Security Information SECURITY
https://security.netapp.com/advisory/ntap-20180605-0001
usn.ubuntu.com/4557-1 WEB
https://usn.ubuntu.com/4557-1
Apache Tomcat Security Information SECURITY
https://web.archive.org/web/20170317100547/http://www.securitytracker.com/id/1037143
Apache Tomcat Security Information SECURITY
https://web.archive.org/web/20170626130744/http://www.securityfocus.com/bid/93943
Apache Tomcat Security Information SECURITY
https://www.oracle.com/security-alerts/cpuoct2021.html
access.redhat.com/errata/rhsa-2017:04... WEB
https://access.redhat.com/errata/RHSA-2017:0455
access.redhat.com/errata/rhsa-2017:04... WEB
https://access.redhat.com/errata/RHSA-2017:0456
access.redhat.com/errata/rhsa-2017:22... WEB
https://access.redhat.com/errata/RHSA-2017:2247
Apache Tomcat Source Repository REPOSITORY
https://github.com/apache/tomcat
lists.apache.org/thread.html/09d2f2c... WEB
https://lists.apache.org/thread.html/09d2f2c65ac4ff5da42f15dc2b0f78b655e50f1a42e8a9784134a9eb%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org/thread.html/09d2f2c... WEB
https://lists.apache.org/thread.html/09d2f2c65ac4ff5da42f15dc2b0f78b655e50f1a42e8a9784134a9eb@%3Cannounce.tomcat.apache.org%3E
lists.apache.org/thread.html/343558d... WEB
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/343558d... WEB
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/3722040... WEB
https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/3722040... WEB
https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/388a323... WEB
https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/388a323... WEB
https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/39ae1f0... WEB
https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/39ae1f0... WEB
https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/3d19773... WEB
https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/3d19773... WEB
https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/6af4712... WEB
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/6af4712... WEB
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/845312a... WEB
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/845312a... WEB
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424@%3Cdev.tomcat.apache.org%3E
rhn.redhat.com/errata/rhsa-2017-04... WEB
http://rhn.redhat.com/errata/RHSA-2017-0457.html
Apache Tomcat Security Information SECURITY
http://www.debian.org/security/2016/dsa-3720

Frequently Asked Questions

What is CVE-2016-6794?
CVE-2016-6794 is a security vulnerability in Apache Tomcat involving System Property Disclosure in Apache Tomcat under General Security Weakness.
Which Apache Tomcat versions are affected?
Affected versions include releases prior to 6.0.47, 7.0.72, 8.0.37, 8.5.5, 9.0.0.M10 across affected packages: org.apache.tomcat:tomcat.
What version fixes CVE-2016-6794?
Upgrading to 6.0.47, 7.0.72, 8.0.37, 8.5.5, 9.0.0.M10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tomcat affected?
Yes, org.apache.tomcat:tomcat is affected in releases prior to 6.0.47, 7.0.72, 8.0.37, 8.5.5, 9.0.0.M10. Upgrade your dependency to 6.0.47, 7.0.72, 8.0.37, 8.5.5, 9.0.0.M10 or later.
What is the CVSS score of CVE-2016-6794?
CVE-2016-6794 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2016-6794?
CVE-2016-6794 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2016-6794?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2rvf-329f-p99g",
  "modified" : "2024-02-22T20:00:30Z",
  "published" : "2022-05-13T01:02:16Z",
  "aliases" : [ "CVE-2016-6794" ],
  "summary" : "System Property Disclosure in Apache Tomcat",
  "details" : "When a SecurityManager is configured, a web application's ability to read system properties should be controlled by the SecurityManager. In Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70, 6.0.0 to 6.0.45 the 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
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      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.0.72"
      } ]
    } ]
  }, {
    "package" : {
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      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      } ]
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  }, {
    "package" : {
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      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
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      }, {
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    } ]
  }, {
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      "name" : "org.apache.tomcat:tomcat"
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    "ranges" : [ {
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      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.0.0.M9"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-6794"
  }, {
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  }, {
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  }, {
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  }, {
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  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20180605-0001"
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    "type" : "WEB",
    "url" : "https://usn.ubuntu.com/4557-1"
  }, {
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    "url" : "https://web.archive.org/web/20170317100547/http://www.securitytracker.com/id/1037143"
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    "url" : "https://web.archive.org/web/20170626130744/http://www.securityfocus.com/bid/93943"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpuoct2021.html"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:0455"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:0456"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:2247"
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  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-02T21:05:25Z",
    "nvd_published_at" : "2017-08-10T16:29:00Z"
  }
}