CVE-2020-14326: Resteasy bom RESTEasy 4.5.5.Final Vulnerability

HIGH
Advisory Identifier: GHSA-37g7-8vjj-pjpj
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2020-14326 is a HIGH (CVSS 7.5) resteasy 4.5.5.final vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Resteasy bom libraries in the Maven ecosystem. The issue involves resteasy 4.5.5.final in hash flooding. Remediation is available by upgrading affected packages to version 4.5.6.Final.

CVE-2020-14326 at a Glance

CVE Identifier CVE-2020-14326
GHSA Identifier GHSA-37g7-8vjj-pjpj
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Resteasy bom
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-2020-14326

To remediate this vulnerability, upgrade all affected Resteasy bom 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.jboss.resteasy:resteasy-bom fixed: 4.5.6.Final 
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-bom</artifactId>
    <version>4.5.6.Final</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.jboss.resteasy

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-14326, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jboss.resteasy

Analyze the terminal output to locate any version of Resteasy bom in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.5.6.Final), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jboss.resteasy 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 Resteasy bom, 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 vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.

CVE-2020-14326 Affected Resteasy bom Versions

1 component(s)
Fixed Versions:
4.5.6.Final
Product / Package Ecosystem Affected Versions Fixed Version
org.jboss.resteasy:resteasy-bom
maven/org.jboss.resteasy/resteasy-bom
Maven
< 4.5.6.Final
4.5.6.Final

References

NVD — CVE-2020-14326 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-14326
Resteasy bom Source Repository REPOSITORY
https://github.com/resteasy/Resteasy/pull/2471
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1855826
Resteasy bom Source Repository REPOSITORY
https://github.com/resteasy/Resteasy
Resteasy bom Security Information SECURITY
https://security.netapp.com/advisory/ntap-20210713-0001

Frequently Asked Questions

What is CVE-2020-14326?
CVE-2020-14326 is a security vulnerability in Resteasy bom involving RESTEasy 4.5.5.Final in hash flooding under CWE-400: Uncontrolled Resource Consumption.
Which Resteasy bom versions are affected?
Affected versions include releases prior to 4.5.6.Final across affected packages: org.jboss.resteasy:resteasy-bom.
What version fixes CVE-2020-14326?
Upgrading to 4.5.6.Final (or the latest patched release for your respective branch) resolves the vulnerability.
Is resteasy-bom affected?
Yes, org.jboss.resteasy:resteasy-bom is affected in releases prior to 4.5.6.Final. Upgrade your dependency to 4.5.6.Final or later.
What is the CVSS score of CVE-2020-14326?
CVE-2020-14326 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-2020-14326?
CVE-2020-14326 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-2020-14326?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jboss.resteasy'. 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-37g7-8vjj-pjpj",
  "modified" : "2022-07-19T18:54:16Z",
  "published" : "2022-03-18T17:58:59Z",
  "aliases" : [ "CVE-2020-14326" ],
  "summary" : "RESTEasy 4.5.5.Final in hash flooding",
  "details" : "A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.",
  "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.jboss.resteasy:resteasy-bom"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.5.6.Final"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.5.5.Final"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-14326"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/resteasy/Resteasy/pull/2471"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1855826"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/resteasy/Resteasy"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20210713-0001"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-06-03T21:18:23Z",
    "nvd_published_at" : "2021-06-02T12:15:00Z"
  }
}