CVE-2021-31408: Vaadin bom Server Session Is Not Invalidated Vulnerability

MODERATE
Advisory Identifier: GHSA-mr8h-j9cv-4m8h
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CVSS 6.3
CWE-613 CWE-287
Published
Advisory Summary

CVE-2021-31408 is a MODERATE (CVSS 6.3) server session is not invalidated vulnerability (CWE-613: Insufficient Session Expiration) affecting Vaadin bom libraries in the Maven ecosystem. The issue involves server session is not invalidated when logout() helper method of authentication module is used in vaadin 18-19. Remediation is available by upgrading affected packages to version 19.0.4.

CVE-2021-31408 at a Glance

CVE Identifier CVE-2021-31408
GHSA Identifier GHSA-mr8h-j9cv-4m8h
Severity MODERATE
CVSS v3.1 Base Score 6.3
CWE Classification CWE-613: Insufficient Session Expiration
Affected Product Vaadin bom
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N).

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2021-31408

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: 19.0.4 
<dependency>
    <groupId>com.vaadin</groupId>
    <artifactId>vaadin-bom</artifactId>
    <version>19.0.4</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 CVE-2021-31408, 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 19.0.4), 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 CWE-613: Insufficient Session Expiration, where according to wasc, "insufficient session expiration is when a web site permits an attacker to reuse old session credentials or session ids for authorization.". 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

`Authentication.logout()` helper in `com.vaadin:flow-client` versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out. - https://vaadin.com/security/cve-2021-31408

CVE-2021-31408 Affected Vaadin bom Versions

1 component(s)
Fixed Versions:
19.0.4
Product / Package Ecosystem Affected Versions Fixed Version
com.vaadin:vaadin-bom
maven/com.vaadin/vaadin-bom
Maven
≥ 18.0.0
< 19.0.4
19.0.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vaadin/platform/security/advisories/GHSA-mr8h-j9cv-4m8h
NVD — CVE-2021-31408 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31408
Vaadin bom Source Repository REPOSITORY
https://github.com/vaadin/flow/pull/10577
Vaadin bom Security Information SECURITY
https://vaadin.com/security/cve-2021-31408

Frequently Asked Questions

What is CVE-2021-31408?
CVE-2021-31408 is a security vulnerability in Vaadin bom involving Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19 under CWE-613: Insufficient Session Expiration.
Which Vaadin bom versions are affected?
Affected versions include releases prior to 19.0.4 across affected packages: com.vaadin:vaadin-bom.
What version fixes CVE-2021-31408?
Upgrading to 19.0.4 (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 19.0.4. Upgrade your dependency to 19.0.4 or later.
What is the CVSS score of CVE-2021-31408?
CVE-2021-31408 has a CVSS v3.1 base score of 6.3 (MODERATE) with vector string CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2021-31408?
CVE-2021-31408 is classified under CWE-613: Insufficient Session Expiration (According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.").
How can I check Maven dependencies for CVE-2021-31408?
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-mr8h-j9cv-4m8h",
  "modified" : "2021-04-22T14:30:10Z",
  "published" : "2021-04-22T16:11:17Z",
  "aliases" : [ "CVE-2021-31408" ],
  "summary" : "Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19",
  "details" : "`Authentication.logout()` helper in `com.vaadin:flow-client` versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.\n\n- https://vaadin.com/security/cve-2021-31408",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.vaadin:vaadin-bom"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "18.0.0"
      }, {
        "fixed" : "19.0.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vaadin/platform/security/advisories/GHSA-mr8h-j9cv-4m8h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-31408"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vaadin/flow/pull/10577"
  }, {
    "type" : "WEB",
    "url" : "https://vaadin.com/security/cve-2021-31408"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287", "CWE-613" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-22T14:30:10Z",
    "nvd_published_at" : "2021-04-23T17:15:00Z"
  }
}