CVE-2020-6950: Mojarra parent Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-rpq8-mmwh-q9hm
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2020-6950 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Mojarra parent libraries in the Maven ecosystem. The issue involves directory traversal in eclipse mojarra. Remediation is available by upgrading affected packages to version 2.3.14.

CVE-2020-6950 at a Glance

CVE Identifier CVE-2020-6950
GHSA Identifier GHSA-rpq8-mmwh-q9hm
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Mojarra parent
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2020-6950

To remediate this vulnerability, upgrade all affected Mojarra parent 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.glassfish:mojarra-parent fixed: 2.3.14 
<dependency>
    <groupId>org.glassfish</groupId>
    <artifactId>mojarra-parent</artifactId>
    <version>2.3.14</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.glassfish

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-6950, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.glassfish

Analyze the terminal output to locate any version of Mojarra parent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.14), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.glassfish 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 Mojarra parent, 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

Directory traversal in Eclipse Mojarra before 2.3.14 allows attackers to read arbitrary files via the loc parameter or con parameter.

CVE-2020-6950 Affected Mojarra parent Versions

1 component(s)
Fixed Versions:
2.3.14
Product / Package Ecosystem Affected Versions Fixed Version
org.glassfish:mojarra-parent
maven/org.glassfish/mojarra-parent
Maven
< 2.3.14
2.3.14

References

NVD — CVE-2020-6950 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-6950
Mojarra parent Source Repository REPOSITORY
https://github.com/eclipse-ee4j/mojarra/issues/4571
Security Fix Commit FIX COMMIT
https://github.com/eclipse-ee4j/mojarra/commit/cefbb9447e7be560e59da2da6bd7cb93776f7741
bugs.eclipse.org/bugs/show_bug.cgi WEB
https://bugs.eclipse.org/bugs/show_bug.cgi?id=550943
Mojarra parent Source Repository REPOSITORY
https://github.com/eclipse-ee4j/mojarra
Mojarra parent Security Information SECURITY
https://www.oracle.com/security-alerts/cpuapr2022.html
Mojarra parent Security Information SECURITY
https://www.oracle.com/security-alerts/cpujan2022.html
Mojarra parent Security Information SECURITY
https://www.oracle.com/security-alerts/cpuoct2021.html

Frequently Asked Questions

What is CVE-2020-6950?
CVE-2020-6950 is a security vulnerability in Mojarra parent involving Directory traversal in Eclipse Mojarra under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Mojarra parent versions are affected?
Affected versions include releases prior to 2.3.14 across affected packages: org.glassfish:mojarra-parent.
What version fixes CVE-2020-6950?
Upgrading to 2.3.14 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mojarra-parent affected?
Yes, org.glassfish:mojarra-parent is affected in releases prior to 2.3.14. Upgrade your dependency to 2.3.14 or later.
What is the CVSS score of CVE-2020-6950?
CVE-2020-6950 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2020-6950?
CVE-2020-6950 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-2020-6950?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.glassfish'. 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-rpq8-mmwh-q9hm",
  "modified" : "2022-02-08T21:23:38Z",
  "published" : "2021-09-01T18:23:58Z",
  "aliases" : [ "CVE-2020-6950" ],
  "summary" : "Directory traversal in Eclipse Mojarra",
  "details" : "Directory traversal in Eclipse Mojarra before 2.3.14 allows attackers to read arbitrary files via the loc parameter or con parameter.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.glassfish:mojarra-parent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.14"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-6950"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eclipse-ee4j/mojarra/issues/4571"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eclipse-ee4j/mojarra/commit/cefbb9447e7be560e59da2da6bd7cb93776f7741"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.eclipse.org/bugs/show_bug.cgi?id=550943"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eclipse-ee4j/mojarra"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpuapr2022.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpujan2022.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpuoct2021.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-06-03T21:21:35Z",
    "nvd_published_at" : "2021-06-02T16:15:00Z"
  }
}