CVE-2020-2157: Skytap Credentials Transmitted Vulnerability

LOW
Advisory Identifier: GHSA-q2wv-m3pq-xpv9
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CVSS 3.1
CWE-319
Published
Advisory Summary

CVE-2020-2157 is a LOW (CVSS 3.1) credentials transmitted vulnerability (CWE-319: Cleartext Transmission of Sensitive Information) affecting Skytap libraries in the Maven ecosystem. The issue involves credentials transmitted in plain text by skytap cloud ci plugin. Remediation is available in the latest vendor maintenance releases.

CVE-2020-2157 at a Glance

CVE Identifier CVE-2020-2157
GHSA Identifier GHSA-q2wv-m3pq-xpv9
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-319: Cleartext Transmission of Sensitive Information
Affected Product Skytap
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.1

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

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

How to Fix CVE-2020-2157

To remediate this vulnerability, upgrade all affected Skytap 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.jenkins-ci.plugins:skytap fixed: Latest secure release 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>skytap</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.jenkins-ci.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-2157, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

Analyze the terminal output to locate any version of Skytap 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.jenkins-ci.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-319: Cleartext Transmission of Sensitive Information, where the product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. In Skytap, 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

Skytap Cloud CI Plugin stores credentials in job `config.xml` files as part of its configuration. While the credentials are stored encrypted on disk, they are transmitted in plain text as part of the configuration form by Skytap Cloud CI Plugin 2.07 and earlier. These credentials could be viewed by users with Extended Read permission.

CVE-2020-2157 Affected Skytap Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:skytap
maven/org.jenkins-ci.plugins/skytap
Maven
≤ 2.07

References

NVD — CVE-2020-2157 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2157
Skytap Source Repository REPOSITORY
https://github.com/jenkinsci/skytap-cloud-plugin
Skytap Security Information SECURITY
https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1522
Skytap Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/03/09/1

Frequently Asked Questions

What is CVE-2020-2157?
CVE-2020-2157 is a security vulnerability in Skytap involving Credentials transmitted in plain text by Skytap Cloud CI Plugin under CWE-319: Cleartext Transmission of Sensitive Information.
Which Skytap versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.jenkins-ci.plugins:skytap.
What version fixes CVE-2020-2157?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is skytap affected?
Yes, org.jenkins-ci.plugins:skytap 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-2020-2157?
CVE-2020-2157 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2020-2157?
CVE-2020-2157 is classified under CWE-319: Cleartext Transmission of Sensitive Information (The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.).
How can I check Maven dependencies for CVE-2020-2157?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.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-q2wv-m3pq-xpv9",
  "modified" : "2023-01-05T20:49:29Z",
  "published" : "2022-05-24T17:10:30Z",
  "aliases" : [ "CVE-2020-2157" ],
  "summary" : "Credentials transmitted in plain text by Skytap Cloud CI Plugin",
  "details" : "Skytap Cloud CI Plugin stores credentials in job `config.xml` files as part of its configuration.\n\nWhile the credentials are stored encrypted on disk, they are transmitted in plain text as part of the configuration form by Skytap Cloud CI Plugin 2.07 and earlier. These credentials could be viewed by users with Extended Read permission.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:skytap"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.07"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2157"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/skytap-cloud-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1522"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/03/09/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-319" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-05T20:49:29Z",
    "nvd_published_at" : "2020-03-09T16:15:00Z"
  }
}