CVE-2023-50966: Jose Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-9mg4-v392-8j68
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CVSS 5.3
CWE-400
Published
Advisory Summary

CVE-2023-50966 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Jose libraries in the Hex ecosystem. The issue involves erlang-jose vulnerable to denial of service via large p2c value. Remediation is available by upgrading affected packages to version 1.11.7.

CVE-2023-50966 at a Glance

CVE Identifier CVE-2023-50966
GHSA Identifier GHSA-9mg4-v392-8j68
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Jose
Package Ecosystem Hex
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:N/I:N/A:L).

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

How to Fix CVE-2023-50966

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

jose fixed: 1.11.7 
Upgrade jose to 1.11.7
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 jose

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-50966, inspect your project dependencies for Jose:

inspect dependencies for jose

Analyze the terminal output to locate any version of Jose in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.11.7), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Jose, 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

erlang-jose (aka JOSE for Erlang and Elixir) through 1.11.6 allow attackers to cause a denial of service (CPU consumption) via a large p2c (aka PBES2 Count) value in a JOSE header.

CVE-2023-50966 Affected Jose Versions

1 component(s)
Fixed Versions:
1.11.7
Product / Package Ecosystem Affected Versions Fixed Version
jose
 Hex
< 1.11.7
1.11.7

References

NVD — CVE-2023-50966 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-50966
Security Fix Commit FIX COMMIT
https://github.com/potatosalad/erlang-jose/commit/718d213f07b08056737923f8063d5df56dcb66ae
Jose Source Repository REPOSITORY
https://github.com/P3ngu1nW/CVE_Request/blob/main/erlang-jose.md
Jose Source Repository REPOSITORY
https://github.com/potatosalad/erlang-jose
hexdocs.pm/jose/jose.html WEB
https://hexdocs.pm/jose/JOSE.html

Frequently Asked Questions

What is CVE-2023-50966?
CVE-2023-50966 is a security vulnerability in Jose involving erlang-jose vulnerable to denial of service via large p2c value under CWE-400: Uncontrolled Resource Consumption.
Which Jose versions are affected?
Affected versions include releases prior to 1.11.7 across affected packages: jose.
What version fixes CVE-2023-50966?
Upgrading to 1.11.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jose affected?
Yes, jose is affected in releases prior to 1.11.7. Upgrade your dependency to 1.11.7 or later.
What is the CVSS score of CVE-2023-50966?
CVE-2023-50966 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:N/I:N/A:L.
What CWE is associated with CVE-2023-50966?
CVE-2023-50966 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Hex dependencies for CVE-2023-50966?
Run the dependency tree command: 'inspect dependencies for jose'. 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-9mg4-v392-8j68",
  "modified" : "2024-04-10T21:19:22Z",
  "published" : "2024-03-19T15:30:34Z",
  "aliases" : [ "CVE-2023-50966" ],
  "summary" : "erlang-jose vulnerable to denial of service via large p2c value",
  "details" : "erlang-jose (aka JOSE for Erlang and Elixir) through 1.11.6 allow attackers to cause a denial of service (CPU consumption) via a large p2c (aka PBES2 Count) value in a JOSE header.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Hex",
      "name" : "jose"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.11.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-50966"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/potatosalad/erlang-jose/commit/718d213f07b08056737923f8063d5df56dcb66ae"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/P3ngu1nW/CVE_Request/blob/main/erlang-jose.md"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/potatosalad/erlang-jose"
  }, {
    "type" : "WEB",
    "url" : "https://hexdocs.pm/jose/JOSE.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-08T16:46:03Z",
    "nvd_published_at" : "2024-03-19T15:15:07Z"
  }
}