Vulnerabilities in pkg:maven/org.apache.knox/gateway-service-knoxsso

PACKAGE
Advisory Identifier: GHSA-vv38-4xcj-q4rw
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Advisory Summary

CVE-2021-42357 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Gateway service knoxsso libraries in the Maven ecosystem. The issue involves cross-site scripting in apache knox sso. Remediation is available by upgrading affected packages to version 1.6.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.apache.knox/gateway-service-knoxsso

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.apache.knox/gateway-service-knoxsso. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-vv38-4xcj-q4rw CVE-2021-42357 MODERATE Cross-site Scripting in Apache Knox SSO

CVE-2021-42357 at a Glance

CVE Identifier CVE-2021-42357
GHSA Identifier GHSA-vv38-4xcj-q4rw
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Gateway service knoxsso
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2021-42357

To remediate this vulnerability, upgrade all affected Gateway service knoxsso 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.knox:gateway-service-knoxsso fixed: 1.6.1 
<dependency>
    <groupId>org.apache.knox</groupId>
    <artifactId>gateway-service-knoxsso</artifactId>
    <version>1.6.1</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.knox

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-42357, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.knox

Analyze the terminal output to locate any version of Gateway service knoxsso in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.6.1), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.knox 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 Gateway service knoxsso, 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

When using Apache Knox SSO prior to 1.6.1, a request could be crafted to redirect a user to a malicious page due to improper URL parsing. A request that included a specially crafted request parameter could be used to redirect the user to a page controlled by an attacker. This URL would need to be presented to the user outside the normal request flow through a XSS or phishing campaign.

CVE-2021-42357 Affected Gateway service knoxsso Versions

1 component(s)
Fixed Versions:
1.6.1
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.knox:gateway-service-knoxsso
maven/org.apache.knox/gateway-service-knoxsso
Maven
< 1.6.1
1.6.1

References

NVD — CVE-2021-42357 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42357
lists.apache.org/thread/b7v5dkpyqb51... WEB
https://lists.apache.org/thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7j
Gateway service knoxsso Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/01/17/2

Frequently Asked Questions

What is CVE-2021-42357?
CVE-2021-42357 is a security vulnerability in Gateway service knoxsso involving Cross-site Scripting in Apache Knox SSO under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Gateway service knoxsso versions are affected?
Affected versions include releases prior to 1.6.1 across affected packages: org.apache.knox:gateway-service-knoxsso.
What version fixes CVE-2021-42357?
Upgrading to 1.6.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is gateway-service-knoxsso affected?
Yes, org.apache.knox:gateway-service-knoxsso is affected in releases prior to 1.6.1. Upgrade your dependency to 1.6.1 or later.
What is the CVSS score of CVE-2021-42357?
CVE-2021-42357 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-42357?
CVE-2021-42357 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-2021-42357?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.knox'. 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-vv38-4xcj-q4rw",
  "modified" : "2022-01-25T20:49:39Z",
  "published" : "2022-01-21T23:52:00Z",
  "aliases" : [ "CVE-2021-42357" ],
  "summary" : "Cross-site Scripting in Apache Knox SSO",
  "details" : "When using Apache Knox SSO prior to 1.6.1, a request could be crafted to redirect a user to a malicious page due to improper URL parsing. A request that included a specially crafted request parameter could be used to redirect the user to a page controlled by an attacker. This URL would need to be presented to the user outside the normal request flow through a XSS or phishing campaign.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.knox:gateway-service-knoxsso"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-42357"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7j"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/01/17/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-19T14:11:29Z",
    "nvd_published_at" : "2022-01-17T20:15:00Z"
  }
}