CVE-2021-27576: Openmeetings parent Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-px9f-597f-wmcf
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2021-27576 is a HIGH (CVSS 7.5) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Openmeetings parent libraries in the Maven ecosystem. The issue involves uncontrolled resource consumption in apache openmeetings server. Remediation is available by upgrading affected packages to version 6.0.0.

CVE-2021-27576 at a Glance

CVE Identifier CVE-2021-27576
GHSA Identifier GHSA-px9f-597f-wmcf
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Openmeetings parent
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:N/A:H).

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 None (I:N)
Availability High (A:H)

How to Fix CVE-2021-27576

To remediate this vulnerability, upgrade all affected Openmeetings parent 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.openmeetings:openmeetings-parent fixed: 6.0.0 
<dependency>
    <groupId>org.apache.openmeetings</groupId>
    <artifactId>openmeetings-parent</artifactId>
    <version>6.0.0</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.openmeetings

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-27576, inspect your build dependencies using the Maven Dependency Plugin:

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

Analyze the terminal output to locate any version of Openmeetings parent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.0.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.openmeetings 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 CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Openmeetings parent, 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

If was found that the NetTest web service can be used to overload the bandwidth of a Apache OpenMeetings server. This issue was addressed in Apache OpenMeetings 6.0.0

CVE-2021-27576 Affected Openmeetings parent Versions

1 component(s)
Fixed Versions:
6.0.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.openmeetings:openmeetings-parent
maven/org.apache.openmeetings/openmeetings-parent
Maven
≥ 4.0.0
< 6.0.0
6.0.0

References

NVD — CVE-2021-27576 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27576
Security Fix Commit FIX COMMIT
https://github.com/apache/openmeetings/commit/060a3114ad759931aeb42cd9afa9d1ebb39d3075
Security Fix Commit FIX COMMIT
https://github.com/apache/openmeetings/commit/afe26c950b127776f2dfe920abff41a584874de8
Security Fix Commit FIX COMMIT
https://github.com/apache/openmeetings/commit/cbdfd2f9731a8fe3daa9b4adf5da4a063fde161d
issues.apache.org/jira/browse/openmee... WEB
https://issues.apache.org/jira/browse/OPENMEETINGS-2551
lists.apache.org/thread.html/r9bb615... WEB
https://lists.apache.org/thread.html/r9bb615bd70a0197368f5f3ffc887162686caeb0b5fc30592a7a871e9%40%3Cuser.openmeetings.apache.org%3E
Openmeetings parent Security Information SECURITY
https://openmeetings.apache.org/security.html#cve-2021-27576---apache-openmeetings-bandwidth-can

Frequently Asked Questions

What is CVE-2021-27576?
CVE-2021-27576 is a security vulnerability in Openmeetings parent involving Uncontrolled Resource Consumption in Apache OpenMeetings server under CWE-400: Uncontrolled Resource Consumption.
Which Openmeetings parent versions are affected?
Affected versions include releases prior to 6.0.0 across affected packages: org.apache.openmeetings:openmeetings-parent.
What version fixes CVE-2021-27576?
Upgrading to 6.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openmeetings-parent affected?
Yes, org.apache.openmeetings:openmeetings-parent is affected in releases prior to 6.0.0. Upgrade your dependency to 6.0.0 or later.
What is the CVSS score of CVE-2021-27576?
CVE-2021-27576 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:N/A:H.
What CWE is associated with CVE-2021-27576?
CVE-2021-27576 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Maven dependencies for CVE-2021-27576?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.openmeetings'. 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-px9f-597f-wmcf",
  "modified" : "2021-03-26T23:09:59Z",
  "published" : "2021-06-16T17:43:36Z",
  "aliases" : [ "CVE-2021-27576" ],
  "summary" : "Uncontrolled Resource Consumption in Apache OpenMeetings server",
  "details" : "If was found that the NetTest web service can be used to overload the bandwidth of a Apache OpenMeetings server. This issue was addressed in Apache OpenMeetings 6.0.0",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.openmeetings:openmeetings-parent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "6.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-27576"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/openmeetings/commit/060a3114ad759931aeb42cd9afa9d1ebb39d3075"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/openmeetings/commit/afe26c950b127776f2dfe920abff41a584874de8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/openmeetings/commit/cbdfd2f9731a8fe3daa9b4adf5da4a063fde161d"
  }, {
    "type" : "WEB",
    "url" : "https://issues.apache.org/jira/browse/OPENMEETINGS-2551"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r9bb615bd70a0197368f5f3ffc887162686caeb0b5fc30592a7a871e9%40%3Cuser.openmeetings.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://openmeetings.apache.org/security.html#cve-2021-27576---apache-openmeetings-bandwidth-can"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-03-26T23:09:59Z",
    "nvd_published_at" : "2021-03-15T09:15:00Z"
  }
}