CVE-2019-17557: Syncope client enduser Cross-Site Scripting Vulnerability

LOW
Advisory Identifier: GHSA-6qj8-c27w-rp33
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2019-17557 is a LOW (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Syncope client enduser libraries in the Maven ecosystem. The issue involves cross-site scripting in apache syncome enduser. Remediation is available by upgrading affected packages to version 2.0.15, 2.1.6.

CVE-2019-17557 at a Glance

CVE Identifier CVE-2019-17557
GHSA Identifier GHSA-6qj8-c27w-rp33
Severity LOW
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Syncope client enduser
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.4

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

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

How to Fix CVE-2019-17557

To remediate this vulnerability, upgrade all affected Syncope client enduser 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.apache.syncope.client:syncope-client-enduser fixed: 2.0.15 
<dependency>
    <groupId>org.apache.syncope.client</groupId>
    <artifactId>syncope-client-enduser</artifactId>
    <version>2.0.15</version>
</dependency>
org.apache.syncope.client:syncope-client-enduser fixed: 2.1.6 
<dependency>
    <groupId>org.apache.syncope.client</groupId>
    <artifactId>syncope-client-enduser</artifactId>
    <version>2.1.6</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=org.apache.syncope.client

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2019-17557, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.syncope.client

Analyze the terminal output to locate any version of Syncope client enduser in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.15), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.syncope.client 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Syncope client enduser, 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

It was found that the Apache Syncope EndUser UI login page prio to 2.0.15 and 2.1.6 reflects the successMessage parameters. By this mean, a user accessing the Enduser UI could execute javascript code from URL query string.

CVE-2019-17557 Affected Syncope client enduser Versions

2 component(s)
Fixed Versions:
2.0.152.1.6
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.syncope.client:syncope-client-enduser
maven/org.apache.syncope.client/syncope-client-enduser
Maven
< 2.0.15
2.0.15
org.apache.syncope.client:syncope-client-enduser
maven/org.apache.syncope.client/syncope-client-enduser
Maven
≥ 2.1.0
< 2.1.6
2.1.6

References

NVD — CVE-2019-17557 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-17557
Syncope client enduser Security Information SECURITY
http://syncope.apache.org/security

Frequently Asked Questions

What is CVE-2019-17557?
CVE-2019-17557 is a security vulnerability in Syncope client enduser involving Cross-site scripting in Apache Syncome EndUser under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Syncope client enduser versions are affected?
Affected versions include releases prior to 2.0.15, 2.1.6 across affected packages: org.apache.syncope.client:syncope-client-enduser.
What version fixes CVE-2019-17557?
Upgrading to 2.0.15, 2.1.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is syncope-client-enduser affected?
Yes, org.apache.syncope.client:syncope-client-enduser is affected in releases prior to 2.0.15, 2.1.6. Upgrade your dependency to 2.0.15, 2.1.6 or later.
What is the CVSS score of CVE-2019-17557?
CVE-2019-17557 has a CVSS v3.1 base score of 5.4 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2019-17557?
CVE-2019-17557 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2019-17557?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.syncope.client'. 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-6qj8-c27w-rp33",
  "modified" : "2021-05-25T20:49:00Z",
  "published" : "2022-01-06T19:38:07Z",
  "aliases" : [ "CVE-2019-17557" ],
  "summary" : "Cross-site scripting in Apache Syncome EndUser",
  "details" : "It was found that the Apache Syncope EndUser UI login page prio to 2.0.15 and 2.1.6 reflects the successMessage parameters. By this mean, a user accessing the Enduser UI could execute javascript code from URL query string.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.syncope.client:syncope-client-enduser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.15"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.syncope.client:syncope-client-enduser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1.0"
      }, {
        "fixed" : "2.1.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-17557"
  }, {
    "type" : "WEB",
    "url" : "http://syncope.apache.org/security"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-25T20:49:00Z",
    "nvd_published_at" : "2020-05-04T13:15:00Z"
  }
}