CVE-2020-2278: Storable configs plugin Arbitrary File Write Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-qv6q-4jwx-7j5c
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CVSS 6.5
CWE-22
Published
Advisory Summary

CVE-2020-2278 is a MODERATE (CVSS 6.5) arbitrary file write vulnerability vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Storable configs plugin libraries in the Maven ecosystem. The issue involves arbitrary file write vulnerability in jenkins storable configs plugin. Remediation is available in the latest vendor maintenance releases.

CVE-2020-2278 at a Glance

CVE Identifier CVE-2020-2278
GHSA Identifier GHSA-qv6q-4jwx-7j5c
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Storable configs plugin
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

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

How to Fix CVE-2020-2278

To remediate this vulnerability, upgrade all affected Storable configs plugin 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:storable-configs-plugin fixed: Latest secure release 
<dependency>
    <groupId>org.jvnet.hudson.plugins</groupId>
    <artifactId>storable-configs-plugin</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-2020-2278, 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 Storable configs plugin 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Storable configs plugin, 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 Storable Configs Plugin 1.0 and earlier does not restrict the user-specified file name, allowing attackers with Job/Configure permission to replace any other '.xml' file on the Jenkins controller with a job config.xml file's content.

CVE-2020-2278 Affected Storable configs plugin Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.jvnet.hudson.plugins:storable-configs-plugin
maven/org.jvnet.hudson.plugins/storable-configs-plugin
Maven
≤ 1.0

References

NVD — CVE-2020-2278 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2278
Storable configs plugin Source Repository REPOSITORY
https://github.com/jenkinsci/storable-configs-plugin
Storable configs plugin Security Information SECURITY
https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1968%20(2)
Storable configs plugin Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/09/16/3

Frequently Asked Questions

What is CVE-2020-2278?
CVE-2020-2278 is a security vulnerability in Storable configs plugin involving Arbitrary file write vulnerability in Jenkins Storable Configs Plugin under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Storable configs plugin versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.jvnet.hudson.plugins:storable-configs-plugin.
What version fixes CVE-2020-2278?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is storable-configs-plugin affected?
Yes, org.jvnet.hudson.plugins:storable-configs-plugin 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-2020-2278?
CVE-2020-2278 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2020-2278?
CVE-2020-2278 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Maven dependencies for CVE-2020-2278?
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-qv6q-4jwx-7j5c",
  "modified" : "2023-10-27T14:06:09Z",
  "published" : "2022-05-24T17:28:27Z",
  "aliases" : [ "CVE-2020-2278" ],
  "summary" : "Arbitrary file write vulnerability in Jenkins Storable Configs Plugin",
  "details" : "Jenkins Storable Configs Plugin 1.0 and earlier does not restrict the user-specified file name, allowing attackers with Job/Configure permission to replace any other '.xml' file on the Jenkins controller with a job config.xml file's content.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jvnet.hudson.plugins:storable-configs-plugin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2278"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/storable-configs-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1968%20(2)"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/09/16/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-28T22:50:36Z",
    "nvd_published_at" : "2020-09-16T14:15:00Z"
  }
}