GHSA-jfmf-w293-8xr8: Vaadin bom Denial of Service Vulnerability

HIGH
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CVSS 7.5
Published
Advisory Summary

GHSA-jfmf-w293-8xr8 is a HIGH (CVSS 7.5) denial of service vulnerability (General Security Weakness) affecting Vaadin bom libraries in the Maven ecosystem. The issue involves regular expression denial of service (redos) in emailvalidator class in v7 compatibility module in vaadin 8. Remediation is available by upgrading affected packages to version 8.13.0.

GHSA-jfmf-w293-8xr8 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-jfmf-w293-8xr8
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Vaadin 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 GHSA-jfmf-w293-8xr8

To remediate this vulnerability, upgrade all affected Vaadin 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.

com.vaadin:vaadin-bom fixed: 8.13.0 
<dependency>
    <groupId>com.vaadin</groupId>
    <artifactId>vaadin-bom</artifactId>
    <version>8.13.0</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=com.vaadin

How to Check if You Are Affected

To determine whether your Java application is affected by GHSA-jfmf-w293-8xr8, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.vaadin

Analyze the terminal output to locate any version of Vaadin bom in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.13.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.vaadin 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 Vaadin 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

Unsafe validation RegEx in `EmailValidator` component in `com.vaadin:vaadin-compatibility-server` versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.

GHSA-jfmf-w293-8xr8 Affected Vaadin bom Versions

1 component(s)
Fixed Versions:
8.13.0
Product / Package Ecosystem Affected Versions Fixed Version
com.vaadin:vaadin-bom
maven/com.vaadin/vaadin-bom
Maven
≥ 8.0.0
< 8.13.0
8.13.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vaadin/framework/security/advisories/GHSA-jfmf-w293-8xr8
Vaadin bom Source Repository REPOSITORY
https://github.com/vaadin/framework
Vaadin bom Security Information SECURITY
https://vaadin.com/security/cve-2021-31409

Frequently Asked Questions

What is GHSA-jfmf-w293-8xr8?
GHSA-jfmf-w293-8xr8 is a security vulnerability in Vaadin bom involving Regular expression Denial of Service (ReDoS) in EmailValidator class in V7 compatibility module in Vaadin 8 under General Security Weakness.
Which Vaadin bom versions are affected?
Affected versions include releases prior to 8.13.0 across affected packages: com.vaadin:vaadin-bom.
What version fixes GHSA-jfmf-w293-8xr8?
Upgrading to 8.13.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vaadin-bom affected?
Yes, com.vaadin:vaadin-bom is affected in releases prior to 8.13.0. Upgrade your dependency to 8.13.0 or later.
What is the CVSS score of GHSA-jfmf-w293-8xr8?
GHSA-jfmf-w293-8xr8 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 GHSA-jfmf-w293-8xr8?
GHSA-jfmf-w293-8xr8 is classified under General Security Weakness.
How can I check Maven dependencies for GHSA-jfmf-w293-8xr8?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.vaadin'. 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-jfmf-w293-8xr8",
  "modified" : "2021-10-13T17:43:34Z",
  "published" : "2021-10-13T18:55:52Z",
  "aliases" : [ ],
  "summary" : "Regular expression Denial of Service (ReDoS) in EmailValidator class in V7 compatibility module in Vaadin 8",
  "details" : "Unsafe validation RegEx in `EmailValidator` component in `com.vaadin:vaadin-compatibility-server` versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.",
  "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" : "com.vaadin:vaadin-bom"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.13.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 8.12.4"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vaadin/framework/security/advisories/GHSA-jfmf-w293-8xr8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vaadin/framework"
  }, {
    "type" : "WEB",
    "url" : "https://vaadin.com/security/cve-2021-31409"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-10-13T17:43:34Z",
    "nvd_published_at" : null
  }
}