CVE-2019-14802: Github.com/hashicorp/nomad Hashicorp Nomad Information Exposure Through Vulnerability

MODERATE
Advisory Identifier: GHSA-6hv3-7c34-4hx8
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CVSS 5.3
CWE-200 CWE-526
Published
Advisory Summary

CVE-2019-14802 is a MODERATE (CVSS 5.3) hashicorp nomad information exposure through vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Github.com/hashicorp/nomad libraries in the Go ecosystem. The issue involves hashicorp nomad information exposure through environmental variables. Remediation is available by upgrading affected packages to version 0.9.5.

CVE-2019-14802 at a Glance

CVE Identifier CVE-2019-14802
GHSA Identifier GHSA-6hv3-7c34-4hx8
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Github.com/hashicorp/nomad
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L/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 Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2019-14802

To remediate this vulnerability, upgrade all affected Github.com/hashicorp/nomad dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/hashicorp/nomad fixed: 0.9.5 
Upgrade github.com/hashicorp/nomad to 0.9.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/hashicorp/nomad

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-14802, inspect your project dependencies for Github.com/hashicorp/nomad:

inspect dependencies for github.com/hashicorp/nomad

Analyze the terminal output to locate any version of Github.com/hashicorp/nomad in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Github.com/hashicorp/nomad, 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

In Nomad before version 0.9.5, when rendering a task template, all environment variables were available to the rendering task. As a fix, only task environment variables are used.

CVE-2019-14802 Affected Github.com/hashicorp/nomad Versions

1 component(s)
Fixed Versions:
0.9.5
Product / Package Ecosystem Affected Versions Fixed Version
github.com/hashicorp/nomad
golang/github.com/hashicorp/nomad
Go
< 0.9.5
0.9.5

References

NVD — CVE-2019-14802 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-14802
Github.com/hashicorp/nomad Source Repository REPOSITORY
https://github.com/hashicorp/nomad/pull/6055
Security Fix Commit FIX COMMIT
https://github.com/hashicorp/nomad/commit/e8238305ef0b9ef37be3efd86a8d34bfbed5f63f
advisories.gitlab.com/advisory/advgo_gith... WEB
https://advisories.gitlab.com/advisory/advgo_github_com_hashicorp_nomad_client_allocrunner_taskrunner_template_GMS_2022_818.html
MITRE CVE Database — CVE-2019-14802 MITRE
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14802
Github.com/hashicorp/nomad Source Repository REPOSITORY
https://github.com/hashicorp/nomad
Github.com/hashicorp/nomad Release RELEASE
https://github.com/hashicorp/nomad/releases/tag/v0.9.5
www.hashicorp.com/blog/category/nomad WEB
https://www.hashicorp.com/blog/category/nomad

Frequently Asked Questions

What is CVE-2019-14802?
CVE-2019-14802 is a security vulnerability in Github.com/hashicorp/nomad involving Hashicorp Nomad Information Exposure Through Environmental Variables under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Github.com/hashicorp/nomad versions are affected?
Affected versions include releases prior to 0.9.5 across affected packages: github.com/hashicorp/nomad.
What version fixes CVE-2019-14802?
Upgrading to 0.9.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/hashicorp/nomad affected?
Yes, github.com/hashicorp/nomad is affected in releases prior to 0.9.5. Upgrade your dependency to 0.9.5 or later.
What is the CVSS score of CVE-2019-14802?
CVE-2019-14802 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2019-14802?
CVE-2019-14802 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Go dependencies for CVE-2019-14802?
Run the dependency tree command: 'inspect dependencies for github.com/hashicorp/nomad'. 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-6hv3-7c34-4hx8",
  "modified" : "2023-04-17T19:21:09Z",
  "published" : "2022-02-15T01:57:18Z",
  "aliases" : [ "CVE-2019-14802" ],
  "summary" : "Hashicorp Nomad Information Exposure Through Environmental Variables",
  "details" : "In Nomad before version 0.9.5, when rendering a task template, all environment variables were available to the rendering task.  As a fix, only task environment variables are used.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/hashicorp/nomad"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-14802"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hashicorp/nomad/pull/6055"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hashicorp/nomad/commit/e8238305ef0b9ef37be3efd86a8d34bfbed5f63f"
  }, {
    "type" : "WEB",
    "url" : "https://advisories.gitlab.com/advisory/advgo_github_com_hashicorp_nomad_client_allocrunner_taskrunner_template_GMS_2022_818.html"
  }, {
    "type" : "WEB",
    "url" : "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14802"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/hashicorp/nomad"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hashicorp/nomad/releases/tag/v0.9.5"
  }, {
    "type" : "WEB",
    "url" : "https://www.hashicorp.com/blog/category/nomad"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-526" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-12T17:59:46Z",
    "nvd_published_at" : "2022-12-26T21:15:00Z"
  }
}