Vulnerabilities in pkg:maven/org.fourthline.cling/cling-core

PACKAGE
Advisory Identifier: GHSA-c438-6f6r-pg8w
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Advisory Summary

CVE-2020-23622 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Cling core libraries in the Maven ecosystem. The issue involves 4thline cling upnp protocol issue can lead to denial of service. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.fourthline.cling/cling-core

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.fourthline.cling/cling-core. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-c438-6f6r-pg8w CVE-2020-23622 HIGH 4thline cling uPnP protocol issue can lead to denial of service

CVE-2020-23622 at a Glance

CVE Identifier CVE-2020-23622
GHSA Identifier GHSA-c438-6f6r-pg8w
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Cling core
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-2020-23622

To remediate this vulnerability, upgrade all affected Cling core 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.fourthline.cling:cling-core fixed: Latest secure release 
<dependency>
    <groupId>org.fourthline.cling</groupId>
    <artifactId>cling-core</artifactId>
    <version>Latest secure release</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.fourthline.cling

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-23622, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.fourthline.cling

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

Note: The mvn dependency:tree -Dincludes=org.fourthline.cling 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Cling core, 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

An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked `CALLBACK` parameter in the request header. As of 2022, 4thline cling is no longer supported by the maintainers.

CVE-2020-23622 Affected Cling core Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.fourthline.cling:cling-core
maven/org.fourthline.cling/cling-core
Maven
≥ 2.0.0
≤ 2.1.2

References

NVD — CVE-2020-23622 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-23622
Cling core Source Repository REPOSITORY
https://github.com/4thline/cling/issues/253
Cling core Source Repository REPOSITORY
https://github.com/4thline/cling
zh-cn.tenable.com/blog/cve-2020-12695... WEB
https://zh-cn.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=true

Frequently Asked Questions

What is CVE-2020-23622?
CVE-2020-23622 is a security vulnerability in Cling core involving 4thline cling uPnP protocol issue can lead to denial of service under CWE-918: Server-Side Request Forgery (SSRF).
Which Cling core versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.fourthline.cling:cling-core.
What version fixes CVE-2020-23622?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is cling-core affected?
Yes, org.fourthline.cling:cling-core is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-23622?
CVE-2020-23622 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-2020-23622?
CVE-2020-23622 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check Maven dependencies for CVE-2020-23622?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.fourthline.cling'. 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-c438-6f6r-pg8w",
  "modified" : "2022-08-18T19:18:55Z",
  "published" : "2022-08-16T00:00:22Z",
  "aliases" : [ "CVE-2020-23622" ],
  "summary" : "4thline cling uPnP protocol issue can lead to denial of service",
  "details" : "An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked `CALLBACK` parameter in the request header. As of 2022, 4thline cling is no longer supported by the maintainers.",
  "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.fourthline.cling:cling-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "last_affected" : "2.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-23622"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/4thline/cling/issues/253"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/4thline/cling"
  }, {
    "type" : "WEB",
    "url" : "https://zh-cn.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=true"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-18T19:18:55Z",
    "nvd_published_at" : "2022-08-15T20:15:00Z"
  }
}