CVE-2023-1296: Github.com/hashicorp/nomad Hashicorp Nomad ACLs Cannot Deny Vulnerability

MODERATE
Advisory Identifier: GHSA-hhvx-8755-4cvw
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CVSS 5.3
Published
Advisory Summary

CVE-2023-1296 is a MODERATE (CVSS 5.3) hashicorp nomad acls cannot deny vulnerability (General Security Weakness) affecting Github.com/hashicorp/nomad libraries in the Go ecosystem. The issue involves hashicorp nomad acls cannot deny access to workload’s own variables. Remediation is available by upgrading affected packages to version 1.4.6, 1.5.1.

CVE-2023-1296 at a Glance

CVE Identifier CVE-2023-1296
GHSA Identifier GHSA-hhvx-8755-4cvw
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification General Security Weakness
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-2023-1296

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: 1.4.6 
Upgrade github.com/hashicorp/nomad to 1.4.6
github.com/hashicorp/nomad fixed: 1.5.1 
Upgrade github.com/hashicorp/nomad to 1.5.1
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-2023-1296, 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 1.4.6), 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 General Security Weakness. 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

A vulnerability was identified in Nomad and Nomad Enterprise (“Nomad”) such that a deny ACL capability could not be applied to a workload’s own variables. If included, the Nomad ACL system will silently fail to block access. This vulnerability, CVE-2023-1296, was fixed in Nomad 1.4.6 and 1.5.1.

CVE-2023-1296 Affected Github.com/hashicorp/nomad Versions

2 component(s)
Fixed Versions:
1.4.61.5.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/hashicorp/nomad
golang/github.com/hashicorp/nomad
Go
≥ 1.4.0
< 1.4.6
1.4.6
github.com/hashicorp/nomad
golang/github.com/hashicorp/nomad
Go
≥ 1.5.0
< 1.5.1
All 1 versions
1.5.0
1.5.1

References

NVD — CVE-2023-1296 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1296
discuss.hashicorp.com/t/hcsec-2023-09-nom... WEB
https://discuss.hashicorp.com/t/hcsec-2023-09-nomad-acls-can-not-deny-access-to-workloads-own-variables/51390
Github.com/hashicorp/nomad Source Repository REPOSITORY
https://github.com/hashicorp/nomad

Frequently Asked Questions

What is CVE-2023-1296?
CVE-2023-1296 is a security vulnerability in Github.com/hashicorp/nomad involving Hashicorp Nomad ACLs Cannot Deny Access to Workload’s Own Variables under General Security Weakness.
Which Github.com/hashicorp/nomad versions are affected?
Affected versions include releases prior to 1.4.6, 1.5.1 across affected packages: github.com/hashicorp/nomad.
What version fixes CVE-2023-1296?
Upgrading to 1.4.6, 1.5.1 (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 1.4.6, 1.5.1. Upgrade your dependency to 1.4.6, 1.5.1 or later.
What is the CVSS score of CVE-2023-1296?
CVE-2023-1296 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-2023-1296?
CVE-2023-1296 is classified under General Security Weakness.
How can I check Go dependencies for CVE-2023-1296?
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-hhvx-8755-4cvw",
  "modified" : "2023-07-06T21:54:20Z",
  "published" : "2023-07-06T19:24:11Z",
  "aliases" : [ "CVE-2023-1296" ],
  "summary" : "Hashicorp Nomad ACLs Cannot Deny Access to Workload’s Own Variables",
  "details" : "A vulnerability was identified in Nomad and Nomad Enterprise (“Nomad”) such that a deny ACL capability could not be applied to a workload’s own variables. If included, the Nomad ACL system will silently fail to block access. This vulnerability, CVE-2023-1296, was fixed in Nomad 1.4.6 and 1.5.1.",
  "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" : "1.4.0"
      }, {
        "fixed" : "1.4.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/hashicorp/nomad"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.5.0"
      }, {
        "fixed" : "1.5.1"
      } ]
    } ],
    "versions" : [ "1.5.0" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-1296"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.hashicorp.com/t/hcsec-2023-09-nomad-acls-can-not-deny-access-to-workloads-own-variables/51390"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/hashicorp/nomad"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-06T21:54:20Z",
    "nvd_published_at" : "2023-03-14T15:15:00Z"
  }
}