cve-2020-5229
Vulnerability from cvelistv5
Published
2020-01-30 20:05
Modified
2024-08-04 08:22
Summary
Opencast stores passwords using outdated MD5 hash algorithm
Impacted products
opencastopencast
Show details on NVD website


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            "url": "https://github.com/opencast/opencast/security/advisories/GHSA-h362-m8f2-5x7c"
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            "url": "https://github.com/opencast/opencast/commit/32bfbe5f78e214e2d589f92050228b91d704758e"
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        "title": "CVE Program Container"
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    "cna": {
      "affected": [
        {
          "product": "opencast",
          "vendor": "opencast",
          "versions": [
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              "status": "affected",
              "version": "\u003c 8.1"
            }
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      "descriptions": [
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          "lang": "en",
          "value": "Opencast before 8.1 stores passwords using the rather outdated and cryptographically insecure MD5 hash algorithm. Furthermore, the hashes are salted using the username instead of a random salt, causing hashes for users with the same username and password to collide which is problematic especially for popular users like the default `admin` user. This essentially means that for an attacker, it might be feasible to reconstruct a user\u0027s password given access to these hashes. Note that attackers needing access to the hashes means that they must gain access to the database in which these are stored first to be able to start cracking the passwords. The problem is addressed in Opencast 8.1 which now uses the modern and much stronger bcrypt password hashing algorithm for storing passwords. Note, that old hashes remain MD5 until the password is updated. For a list of users whose password hashes are stored using MD5, take a look at the `/user-utils/users/md5.json` REST endpoint."
        }
      ],
      "metrics": [
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
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      "title": "Opencast stores passwords using outdated MD5 hash algorithm",
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        "impact": {
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            "attackVector": "NETWORK",
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            "baseScore": 7.7,
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Considere que los atacantes al necesitar acceso a los hashes significa que deben obtener acceso a la base de datos en la que se almacenan primero, para que sean capaces de descifrar las contrase\u00f1as. El problema es abordado en Opencast versi\u00f3n 8.1, que ahora utiliza el algoritmo de hash de contrase\u00f1a bcrypt moderno y mucho m\u00e1s fuerte para almacenar contrase\u00f1as. Tome en cuenta que los hashes antiguos permanecen MD5 hasta que se actualiza la contrase\u00f1a. Para obtener una lista de los usuarios cuyos hash de contrase\u00f1a son almacenados con MD5, visualice al endpoint REST \\\"/user-utils/users/md5.json\\\".\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2},{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":7.7,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":1.3,\"impactScore\":5.8}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:P/I:P/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.5},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-327\"}]},{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-327\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apereo:opencast:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"8.1\",\"matchCriteriaId\":\"11673AEB-4E7B-43BF-98BA-9031E47794ED\"}]}]}],\"references\":[{\"url\":\"https://github.com/opencast/opencast/commit/32bfbe5f78e214e2d589f92050228b91d704758e\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/opencast/opencast/security/advisories/GHSA-h362-m8f2-5x7c\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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