GSD-2021-31522

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.
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CVE-2021-31522
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{
  "GSD": {
    "alias": "CVE-2021-31522",
    "description": "Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.",
    "id": "GSD-2021-31522"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-31522"
      ],
      "details": "Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.",
      "id": "GSD-2021-31522",
      "modified": "2023-12-13T01:23:13.587427Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security@apache.org",
        "ID": "CVE-2021-31522",
        "STATE": "PUBLIC",
        "TITLE": "Apache Kylin unsafe class loading"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Apache Kylin",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c=",
                          "version_name": "Apache Kylin 2",
                          "version_value": "2.6.6"
                        },
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                          "version_affected": "\u003c=",
                          "version_name": "Apache Kylin 3",
                          "version_value": "3.1.2"
                        },
                        {
                          "version_affected": "\u003c=",
                          "version_name": "Apache Kylin 4",
                          "version_value": "4.0.0"
                        }
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                ]
              },
              "vendor_name": "Apache Software Foundation"
            }
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      "credit": [
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          "lang": "eng",
          "value": "bo yu \u003cforhaby0@gmail.com\u003e"
        }
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            "value": "Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions."
          }
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      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": [
        {
          "other": "moderate"
        }
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      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "load any class"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw",
            "refsource": "MISC",
            "url": "https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw"
          },
          {
            "name": "[oss-security] 20220106 CVE-2021-31522: Apache Kylin unsafe class loading",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2022/01/06/4"
          }
        ]
      },
      "source": {
        "discovery": "UNKNOWN"
      },
      "work_around": [
        {
          "lang": "eng",
          "value": "Users of Kylin 2.x \u0026 Kylin 3.x should upgrade to 3.1.3 or apply patch https://github.com/apache/kylin/pull/1695.\nUsers of Kylin 4.x should upgrade to 4.0.1 or apply patch https://github.com/apache/kylin/pull/1763."
        }
      ]
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "[2.0.0,2.6.6],[3.0.0,3.1.3),[4.0.0]",
          "affected_versions": "All versions starting from 2.0.0 up to 2.6.6, all versions starting from 3.0.0 before 3.1.3, version 4.0.0",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-470",
            "CWE-937"
          ],
          "date": "2022-01-12",
          "description": "Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 and prior versions; Apache Kylin 3 and prior versions; Apache Kylin 4 and prior versions.",
          "fixed_versions": [
            "3.0.0-alpha",
            "3.1.3",
            "4.0.1"
          ],
          "identifier": "CVE-2021-31522",
          "identifiers": [
            "CVE-2021-31522"
          ],
          "not_impacted": "All versions before 2.0.0, all versions after 2.6.6 before 3.0.0, all versions starting from 3.1.3 before 4.0.0, all versions after 4.0.0",
          "package_slug": "maven/org.apache.kylin/kylin",
          "pubdate": "2022-01-06",
          "solution": "Upgrade to versions 3.0.0-alpha, 3.1.3, 4.0.1 or above. *Note*: 3.0.0-alpha may be an unstable version. Use caution.",
          "title": "Use of Externally-Controlled Input to Select Classes or Code (\u0027Unsafe Reflection\u0027)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-31522",
            "https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw",
            "http://www.openwall.com/lists/oss-security/2022/01/06/4"
          ],
          "uuid": "2d31aa07-8fb6-4215-9752-6b08d1ae8184"
        }
      ]
    },
    "nvd.nist.gov": {
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                "versionEndIncluding": "2.6.6",
                "versionStartIncluding": "2.0.0",
                "vulnerable": true
              },
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                "versionEndExcluding": "3.1.3",
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                "cpe23Uri": "cpe:2.3:a:apache:kylin:4.0.0:alpha:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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                "cpe23Uri": "cpe:2.3:a:apache:kylin:4.0.0:beta:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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          "ID": "CVE-2021-31522"
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        "data_type": "CVE",
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        "description": {
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            }
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              "name": "https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw",
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2022-01-12T20:52Z",
      "publishedDate": "2022-01-06T13:15Z"
    }
  }
}



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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

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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.



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