Common Weakness Enumeration

CWE-331

Allowed

Insufficient Entropy

Abstraction: Base · Status: Draft

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

221 vulnerabilities reference this CWE, most recent first.

GHSA-XX3H-J3CX-8QFJ

Vulnerability from github – Published: 2019-07-05 21:08 – Updated: 2021-08-17 15:50

Summary

Insufficient Entropy in DotNetNuke

Details

DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values, resulting in lower than expected entropy. NOTE: this issue exists because of an incomplete fix for CVE-2018-15812.

Severity

7.5 (High)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "DotNetNuke.Core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-18326"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-331"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2019-07-05T20:59:37Z",
    "nvd_published_at": "2019-07-03T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values, resulting in lower than expected entropy. NOTE: this issue exists because of an incomplete fix for CVE-2018-15812.",
  "id": "GHSA-xx3h-j3cx-8qfj",
  "modified": "2021-08-17T15:50:15Z",
  "published": "2019-07-05T21:08:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-18326"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dnnsoftware/Dnn.Platform/releases"
    },
    {
      "type": "WEB",
      "url": "https://www.dnnsoftware.com/community/security/security-center"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Insufficient Entropy in DotNetNuke"
}

Mitigation

Implementation

Determine the necessary entropy to adequately provide for randomness and predictability. This can be achieved by increasing the number of bits of objects such as keys and seeds.

CAPEC-59: Session Credential Falsification through Prediction

This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

← Back to the CWE list