CVE-2020-2167: Openshift pipeline Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-264w-xrr7-6qqg
Share
CVSS 8.8
CWE-502 CWE-20
Published
Advisory Summary

CVE-2020-2167 is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Openshift pipeline libraries in the Maven ecosystem. The issue involves rce vulnerability in jenkins openshift pipeline plugin. Remediation is available by upgrading affected packages to version 1.0.57.

CVE-2020-2167 at a Glance

CVE Identifier CVE-2020-2167
GHSA Identifier GHSA-264w-xrr7-6qqg
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Openshift pipeline
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:H/I:H/A:H).

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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2020-2167

To remediate this vulnerability, upgrade all affected Openshift pipeline 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.openshift.jenkins:openshift-pipeline fixed: 1.0.57 
<dependency>
    <groupId>com.openshift.jenkins</groupId>
    <artifactId>openshift-pipeline</artifactId>
    <version>1.0.57</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.openshift.jenkins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-2167, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.openshift.jenkins

Analyze the terminal output to locate any version of Openshift pipeline in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.57), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.openshift.jenkins 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-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Openshift pipeline, 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

OpenShift Pipeline Plugin 1.0.56 and earlier does not configure its YAML parser to prevent the instantiation of arbitrary types. This results in a remote code execution (RCE) vulnerability exploitable by users able to provide YAML input files to OpenShift Pipeline Plugin’s build step. OpenShift Pipeline Plugin 1.0.57 configures its YAML parser to only instantiate safe types.

CVE-2020-2167 Affected Openshift pipeline Versions

1 component(s)
Fixed Versions:
1.0.57
Product / Package Ecosystem Affected Versions Fixed Version
com.openshift.jenkins:openshift-pipeline
maven/com.openshift.jenkins/openshift-pipeline
Maven
< 1.0.57
1.0.57

References

NVD — CVE-2020-2167 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2167
Openshift pipeline Source Repository REPOSITORY
https://github.com/jenkinsci/openshift-pipeline-plugin
Openshift pipeline Security Information SECURITY
https://jenkins.io/security/advisory/2020-03-25/#SECURITY-1739
Openshift pipeline Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/03/25/2

Frequently Asked Questions

What is CVE-2020-2167?
CVE-2020-2167 is a security vulnerability in Openshift pipeline involving RCE vulnerability in Jenkins OpenShift Pipeline Plugin under CWE-502: Deserialization of Untrusted Data.
Which Openshift pipeline versions are affected?
Affected versions include releases prior to 1.0.57 across affected packages: com.openshift.jenkins:openshift-pipeline.
What version fixes CVE-2020-2167?
Upgrading to 1.0.57 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openshift-pipeline affected?
Yes, com.openshift.jenkins:openshift-pipeline is affected in releases prior to 1.0.57. Upgrade your dependency to 1.0.57 or later.
What is the CVSS score of CVE-2020-2167?
CVE-2020-2167 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-2167?
CVE-2020-2167 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Maven dependencies for CVE-2020-2167?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.openshift.jenkins'. 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-264w-xrr7-6qqg",
  "modified" : "2023-10-26T21:51:37Z",
  "published" : "2022-05-24T17:12:40Z",
  "aliases" : [ "CVE-2020-2167" ],
  "summary" : "RCE vulnerability in Jenkins OpenShift Pipeline Plugin",
  "details" : "OpenShift Pipeline Plugin 1.0.56 and earlier does not configure its YAML parser to prevent the instantiation of arbitrary types. This results in a remote code execution (RCE) vulnerability exploitable by users able to provide YAML input files to OpenShift Pipeline Plugin’s build step. OpenShift Pipeline Plugin 1.0.57 configures its YAML parser to only instantiate safe types.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.openshift.jenkins:openshift-pipeline"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.57"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.0.56"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2167"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/openshift-pipeline-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-03-25/#SECURITY-1739"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/03/25/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-28T23:19:17Z",
    "nvd_published_at" : "2020-03-25T17:15:00Z"
  }
}