FKIE_CVE-2021-31805

Vulnerability from fkie_nvd - Published: 2022-04-12 16:15 - Updated: 2026-06-17 03:52
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.
References
security@apache.orghttp://www.openwall.com/lists/oss-security/2022/04/12/6Mailing List, Mitigation, Third Party Advisory
security@apache.orghttps://cwiki.apache.org/confluence/display/WW/S2-062Mitigation, Patch, Vendor Advisory
security@apache.orghttps://security.netapp.com/advisory/ntap-20220420-0001/Third Party Advisory
security@apache.orghttps://www.oracle.com/security-alerts/cpujul2022.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/04/12/6Mailing List, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cwiki.apache.org/confluence/display/WW/S2-062Mitigation, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220420-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujul2022.html
Impacted products
Vendor Product Version
apache struts *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Apache Struts",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "status": "affected",
              "version": "2.0.0 to 2.5.29"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "24A8DF7C-82D9-4D56-AAE7-5D1DEB1CD558",
              "versionEndIncluding": "2.5.29",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag\u2019s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation."
    },
    {
      "lang": "es",
      "value": "La correcci\u00f3n emitida para CVE-2020-17530 era incompleta. As\u00ed, desde Apache Struts versiones 2.0.0 hasta 2.5.29, todav\u00eda algunos de los atributos de las etiquetas pod\u00edan llevar a cabo una doble evaluaci\u00f3n si un desarrollador aplicaba la evaluaci\u00f3n OGNL forzada usando la sintaxis %{...}. El uso de la evaluaci\u00f3n forzada de OGNL en entradas de usuario no confiables puede conllevar a una Ejecuci\u00f3n de C\u00f3digo Remota y una degradaci\u00f3n de la seguridad"
    }
  ],
  "id": "CVE-2021-31805",
  "lastModified": "2026-06-17T03:52:15.950",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-04-12T16:15:08.133",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Mailing List",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2022/04/12/6"
    },
    {
      "source": "security@apache.org",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://cwiki.apache.org/confluence/display/WW/S2-062"
    },
    {
      "source": "security@apache.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20220420-0001/"
    },
    {
      "source": "security@apache.org",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2022/04/12/6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://cwiki.apache.org/confluence/display/WW/S2-062"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20220420-0001/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-917"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-917"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.