GHSA-4r2f-6fm9-2qgh: Duplicate Advisory Ecto Lacks A Protection Mechanism Vulnerability

CRITICAL
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CVSS 9.8
Published
Advisory Summary

GHSA-4r2f-6fm9-2qgh is a CRITICAL (CVSS 9.8) ecto lacks a protection mechanism vulnerability (General Security Weakness) affecting Duplicate Advisory libraries in the Hex ecosystem. The issue involves ecto lacks a protection mechanism. Remediation is available by upgrading affected packages to version 2.2.1.

GHSA-4r2f-6fm9-2qgh at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-4r2f-6fm9-2qgh
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Duplicate Advisory
Package Ecosystem Hex
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/A:H).

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

How to Fix GHSA-4r2f-6fm9-2qgh

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

ecto fixed: 2.2.1 
Upgrade ecto to 2.2.1
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 ecto

How to Check if You Are Affected

To determine whether your application is affected by GHSA-4r2f-6fm9-2qgh, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for ecto

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.1), 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 Duplicate Advisory, 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

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-2xxx-fhc8-9qvq. This link is maintained to preserve external references. ## Original Description Ecto 2.2.0 lacks a certain protection mechanism associated with the interaction between `is_nil` and `raise`.

GHSA-4r2f-6fm9-2qgh Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
2.2.1
Product / Package Ecosystem Affected Versions Fixed Version
ecto
 Hex
≥ 2.2.0
< 2.2.1
All 1 versions
2.2.0
2.2.1

References

NVD — GHSA-4r2f-6fm9-2qgh NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-20166
Duplicate Advisory Source Repository REPOSITORY
https://github.com/elixir-ecto/ecto/pull/2125
Security Fix Commit FIX COMMIT
https://github.com/elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-2xxx-fhc8-9qvq
Duplicate Advisory Source Repository REPOSITORY
https://github.com/elixir-ecto/ecto
groups.google.com/forum/ WEB
https://groups.google.com/forum/#!topic/elixir-ecto/0m4NPfg_MMU

Frequently Asked Questions

What is GHSA-4r2f-6fm9-2qgh?
GHSA-4r2f-6fm9-2qgh is a security vulnerability in Duplicate Advisory involving Ecto lacks a protection mechanism under General Security Weakness.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 2.2.1 across affected packages: ecto.
What version fixes GHSA-4r2f-6fm9-2qgh?
Upgrading to 2.2.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ecto affected?
Yes, ecto is affected in releases prior to 2.2.1. Upgrade your dependency to 2.2.1 or later.
What is the CVSS score of GHSA-4r2f-6fm9-2qgh?
GHSA-4r2f-6fm9-2qgh has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-4r2f-6fm9-2qgh?
GHSA-4r2f-6fm9-2qgh is classified under General Security Weakness.
How can I check Hex dependencies for GHSA-4r2f-6fm9-2qgh?
Run the dependency tree command: 'inspect dependencies for ecto'. 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-4r2f-6fm9-2qgh",
  "modified" : "2026-01-22T20:38:52Z",
  "published" : "2023-01-10T06:30:25Z",
  "withdrawn" : "2026-01-22T20:38:52Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Ecto lacks a protection mechanism",
  "details" : "## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-2xxx-fhc8-9qvq. This link is maintained to preserve external references.\n\n## Original Description\nEcto 2.2.0 lacks a certain protection mechanism associated with the interaction between `is_nil` and `raise`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Hex",
      "name" : "ecto"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2.0"
      }, {
        "fixed" : "2.2.1"
      } ]
    } ],
    "versions" : [ "2.2.0" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-20166"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/elixir-ecto/ecto/pull/2125"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-2xxx-fhc8-9qvq"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/elixir-ecto/ecto"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/forum/#!topic/elixir-ecto/0m4NPfg_MMU"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-10T22:16:53Z",
    "nvd_published_at" : "2023-01-10T06:15:00Z"
  }
}