CVE-2016-6796: Apache Tomcat Apache Tomcat Vulnerable To SecurityManager Vulnerability

HIGH
Advisory Identifier: GHSA-3mjp-p938-4329
Share
CVSS 7.5
Published
Advisory Summary

CVE-2016-6796 is a HIGH (CVSS 7.5) apache tomcat vulnerable to securitymanager vulnerability (General Security Weakness) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves apache tomcat vulnerable to securitymanager bypass. Remediation is available by upgrading affected packages to version 9.0.0.M10, 8.5.5, 8.0.37, 7.0.71, 6.0.46.

CVE-2016-6796 at a Glance

CVE Identifier CVE-2016-6796
GHSA Identifier GHSA-3mjp-p938-4329
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Apache Tomcat
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:H/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 None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2016-6796

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: 9.0.0.M10 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>9.0.0.M10</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: 8.0.37 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>8.0.37</version>
</dependency>
org.apache.tomcat:tomcat fixed: 7.0.71 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>7.0.71</version>
</dependency>
org.apache.tomcat:tomcat fixed: 6.0.46 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>6.0.46</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-2016-6796, 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 9.0.0.M10), 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

A malicious web application running on 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 and 6.0.0 to 6.0.45 was able to bypass a configured SecurityManager via manipulation of the configuration parameters for the JSP Servlet.

CVE-2016-6796 Affected Apache Tomcat Versions

5 component(s)
Fixed Versions:
9.0.0.M108.5.58.0.377.0.716.0.46
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 9.0.0.M1
< 9.0.0.M10
9.0.0.M10
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 8.5.0
< 8.5.5
8.5.5
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 8.0.0.RC1
< 8.0.37
8.0.37
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 7.0.0
< 7.0.71
7.0.71
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 6.0.0
< 6.0.46
6.0.46

References

NVD — CVE-2016-6796 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6796
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/f603f2f4595073f9490e01699d2083112a7c09a7
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/f97769f50ee2613e1bf27107a01d48907fd993ac
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/ffa0346fba2946401630291b642f1cff66d6a2be
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat80/commit/d98fa92b9dfc90fe1ffdaa3cce1be3be84532260
access.redhat.com/errata/rhsa-2017:04... WEB
https://access.redhat.com/errata/RHSA-2017:0455
lists.apache.org/thread.html/845312a... WEB
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424@%3Cdev.tomcat.apache.org%3E
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/20161029105733/http://www.securityfocus.com/bid/93944
Apache Tomcat Security Information SECURITY
https://web.archive.org/web/20161103080055/http://www.securitytracker.com/id/1037141
Apache Tomcat Security Information SECURITY
https://web.archive.org/web/20171012232225/http://www.securitytracker.com/id/1038757
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-2017:0456
access.redhat.com/errata/rhsa-2017:15... WEB
https://access.redhat.com/errata/RHSA-2017:1548
access.redhat.com/errata/rhsa-2017:15... WEB
https://access.redhat.com/errata/RHSA-2017:1549
access.redhat.com/errata/rhsa-2017:15... WEB
https://access.redhat.com/errata/RHSA-2017:1550
access.redhat.com/errata/rhsa-2017:15... WEB
https://access.redhat.com/errata/RHSA-2017:1552
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/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/5a2105a... WEB
https://lists.apache.org/thread.html/5a2105a56b2495ab70fa568f06925bd861f0d71ffab4fb38bb4fdc45%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org/thread.html/5a2105a... WEB
https://lists.apache.org/thread.html/5a2105a56b2495ab70fa568f06925bd861f0d71ffab4fb38bb4fdc45@%3Cannounce.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
rhn.redhat.com/errata/rhsa-2017-04... WEB
http://rhn.redhat.com/errata/RHSA-2017-0457.html
rhn.redhat.com/errata/rhsa-2017-15... WEB
http://rhn.redhat.com/errata/RHSA-2017-1551.html
Apache Tomcat Security Information SECURITY
http://www.debian.org/security/2016/dsa-3720

Frequently Asked Questions

What is CVE-2016-6796?
CVE-2016-6796 is a security vulnerability in Apache Tomcat involving Apache Tomcat vulnerable to SecurityManager bypass under General Security Weakness.
Which Apache Tomcat versions are affected?
Affected versions include releases prior to 9.0.0.M10, 8.5.5, 8.0.37, 7.0.71, 6.0.46 across affected packages: org.apache.tomcat:tomcat.
What version fixes CVE-2016-6796?
Upgrading to 9.0.0.M10, 8.5.5, 8.0.37, 7.0.71, 6.0.46 (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 9.0.0.M10, 8.5.5, 8.0.37, 7.0.71, 6.0.46. Upgrade your dependency to 9.0.0.M10, 8.5.5, 8.0.37, 7.0.71, 6.0.46 or later.
What is the CVSS score of CVE-2016-6796?
CVE-2016-6796 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2016-6796?
CVE-2016-6796 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2016-6796?
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-3mjp-p938-4329",
  "modified" : "2024-02-22T20:05:12Z",
  "published" : "2022-05-13T01:02:16Z",
  "aliases" : [ "CVE-2016-6796" ],
  "summary" : "Apache Tomcat vulnerable to SecurityManager bypass",
  "details" : "A malicious web application running on 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 and 6.0.0 to 6.0.45 was able to bypass a configured SecurityManager via manipulation of the configuration parameters for the JSP Servlet.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0.M1"
      }, {
        "fixed" : "9.0.0.M10"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.0.0.M9"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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    } ],
    "database_specific" : {
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    }
  }, {
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      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
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      "events" : [ {
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      }, {
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      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.0.45"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-6796"
  }, {
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    "url" : "https://github.com/apache/tomcat80/commit/d98fa92b9dfc90fe1ffdaa3cce1be3be84532260"
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    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2017:0455"
  }, {
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    "url" : "https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424@%3Cdev.tomcat.apache.org%3E"
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  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-08T21:59:22Z",
    "nvd_published_at" : "2017-08-11T02:29:00Z"
  }
}