CVE-2020-2270: Clearcase release Cross-Site Scripting Vulnerability

HIGH
Advisory Identifier: GHSA-2c84-35rv-6q3f
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CVSS 8.0
CWE-79
Published
Advisory Summary

CVE-2020-2270 is a HIGH (CVSS 8.0) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Clearcase release libraries in the Maven ecosystem. The issue involves stored xss vulnerability in clearcase release plugin. Remediation is available in the latest vendor maintenance releases.

CVE-2020-2270 at a Glance

CVE Identifier CVE-2020-2270
GHSA Identifier GHSA-2c84-35rv-6q3f
Severity HIGH
CVSS v3.1 Base Score 8.0
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Clearcase release
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.0

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:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2020-2270

To remediate this vulnerability, upgrade all affected Clearcase release 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.jvnet.hudson.plugins:clearcase-release fixed: Latest secure release 
<dependency>
    <groupId>org.jvnet.hudson.plugins</groupId>
    <artifactId>clearcase-release</artifactId>
    <version>Latest secure release</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.jvnet.hudson.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-2270, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jvnet.hudson.plugins

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

Note: The mvn dependency:tree -Dincludes=org.jvnet.hudson.plugins 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 Clearcase release, 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

Jenkins ClearCase Release Plugin 0.3 and earlier does not escape the composite baseline in badge tooltip, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

CVE-2020-2270 Affected Clearcase release Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.jvnet.hudson.plugins:clearcase-release
maven/org.jvnet.hudson.plugins/clearcase-release
Maven
≤ 0.3

References

NVD — CVE-2020-2270 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2270
Clearcase release Source Repository REPOSITORY
https://github.com/jenkinsci/clearcase-release-plugin
Clearcase release Security Information SECURITY
https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1911
Clearcase release Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/09/16/3

Frequently Asked Questions

What is CVE-2020-2270?
CVE-2020-2270 is a security vulnerability in Clearcase release involving Stored XSS vulnerability in ClearCase Release Plugin under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Clearcase release versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.jvnet.hudson.plugins:clearcase-release.
What version fixes CVE-2020-2270?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is clearcase-release affected?
Yes, org.jvnet.hudson.plugins:clearcase-release is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-2270?
CVE-2020-2270 has a CVSS v3.1 base score of 8.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-2270?
CVE-2020-2270 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-2020-2270?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jvnet.hudson.plugins'. 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-2c84-35rv-6q3f",
  "modified" : "2022-12-29T01:45:07Z",
  "published" : "2022-05-24T17:28:26Z",
  "aliases" : [ "CVE-2020-2270" ],
  "summary" : "Stored XSS vulnerability in ClearCase Release Plugin",
  "details" : "Jenkins ClearCase Release Plugin 0.3 and earlier does not escape the composite baseline in badge tooltip, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jvnet.hudson.plugins:clearcase-release"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2270"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/clearcase-release-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1911"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/09/16/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-29T01:45:07Z",
    "nvd_published_at" : "2020-09-16T14:15:00Z"
  }
}