CVE-2018-25007: Flow server Unauthorized Client-side Property Update Vulnerability

LOW
Advisory Identifier: GHSA-jmx8-355m-8vwh
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CVSS 2.6
CWE-754
Published
Advisory Summary

CVE-2018-25007 is a LOW (CVSS 2.6) unauthorized client-side property update vulnerability (CWE-754: Improper Check for Unusual or Exceptional Conditions) affecting Flow server libraries in the Maven ecosystem. The issue involves unauthorized client-side property update in uidl request handler in vaadin 10 and 11. Remediation is available by upgrading affected packages to version 1.0.6.

CVE-2018-25007 at a Glance

CVE Identifier CVE-2018-25007
GHSA Identifier GHSA-jmx8-355m-8vwh
Severity LOW
CVSS v3.1 Base Score 2.6
CWE Classification CWE-754: Improper Check for Unusual or Exceptional Conditions
Affected Product Flow server
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 2.6

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

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

How to Fix CVE-2018-25007

To remediate this vulnerability, upgrade all affected Flow server 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:flow-server fixed: 1.0.6 
<dependency>
    <groupId>com.vaadin</groupId>
    <artifactId>flow-server</artifactId>
    <version>1.0.6</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-2018-25007, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.vaadin

Analyze the terminal output to locate any version of Flow server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.6), 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-754: Improper Check for Unusual or Exceptional Conditions, where the product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product. In Flow server, 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

Missing check in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.5 (Vaadin 10.0.0 through 10.0.7, and 11.0.0 through 11.0.2) allows attacker to update element property values via crafted synchronization message. - https://vaadin.com/security/cve-2018-25007

CVE-2018-25007 Affected Flow server Versions

1 component(s)
Fixed Versions:
1.0.6
Product / Package Ecosystem Affected Versions Fixed Version
com.vaadin:flow-server
maven/com.vaadin/flow-server
Maven
≥ 1.0.0
< 1.0.6
1.0.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vaadin/flow/security/advisories/GHSA-jmx8-355m-8vwh
NVD — CVE-2018-25007 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-25007
Flow server Source Repository REPOSITORY
https://github.com/vaadin/flow/pull/4774
Flow server Security Information SECURITY
https://vaadin.com/security/cve-2018-25007

Frequently Asked Questions

What is CVE-2018-25007?
CVE-2018-25007 is a security vulnerability in Flow server involving Unauthorized client-side property update in UIDL request handler in Vaadin 10 and 11 under CWE-754: Improper Check for Unusual or Exceptional Conditions.
Which Flow server versions are affected?
Affected versions include releases prior to 1.0.6 across affected packages: com.vaadin:flow-server.
What version fixes CVE-2018-25007?
Upgrading to 1.0.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is flow-server affected?
Yes, com.vaadin:flow-server is affected in releases prior to 1.0.6. Upgrade your dependency to 1.0.6 or later.
What is the CVSS score of CVE-2018-25007?
CVE-2018-25007 has a CVSS v3.1 base score of 2.6 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2018-25007?
CVE-2018-25007 is classified under CWE-754: Improper Check for Unusual or Exceptional Conditions (The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.).
How can I check Maven dependencies for CVE-2018-25007?
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-jmx8-355m-8vwh",
  "modified" : "2021-04-16T23:18:28Z",
  "published" : "2021-04-19T14:53:09Z",
  "aliases" : [ "CVE-2018-25007" ],
  "summary" : "Unauthorized client-side property update in UIDL request handler in Vaadin 10 and 11",
  "details" : "Missing check in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.5 (Vaadin 10.0.0 through 10.0.7, and 11.0.0 through 11.0.2) allows attacker to update element property values via crafted synchronization message.\n\n- https://vaadin.com/security/cve-2018-25007",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.vaadin:flow-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.0"
      }, {
        "fixed" : "1.0.6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.0.5"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vaadin/flow/security/advisories/GHSA-jmx8-355m-8vwh"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-25007"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vaadin/flow/pull/4774"
  }, {
    "type" : "WEB",
    "url" : "https://vaadin.com/security/cve-2018-25007"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-754" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-16T23:18:28Z",
    "nvd_published_at" : "2021-04-23T16:15:00Z"
  }
}