Vulnerability-Lookup

CNVD-2020-12676

Vulnerability from cnvd - Published: 2020-02-18

Title

Opencast授权问题漏洞

Description

Opencast是一套免费的开源视频管理解决方案，它具有可扩展、可定制和低成本等特点。 Opencast 7.6之前版本和8.1之前版本中存在授权问题漏洞。该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。攻击者可利用该漏洞公开非公开内容。

Severity

中

Patch Name

Opencast授权问题漏洞的补丁

Patch Description

Opencast是一套免费的开源视频管理解决方案，它具有可扩展、可定制和低成本等特点。 Opencast 7.6之前版本和8.1之前版本中存在授权问题漏洞。该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。攻击者可利用该漏洞公开非公开内容。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x

Reference

https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8

Impacted products

Name
['Opencast Opencast <8.1', 'Opencast Opencast <7.6']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-5206",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-5206"
    }
  },
  "description": "Opencast\u662f\u4e00\u5957\u514d\u8d39\u7684\u5f00\u6e90\u89c6\u9891\u7ba1\u7406\u89e3\u51b3\u65b9\u6848\uff0c\u5b83\u5177\u6709\u53ef\u6269\u5c55\u3001\u53ef\u5b9a\u5236\u548c\u4f4e\u6210\u672c\u7b49\u7279\u70b9\u3002\n\nOpencast 7.6\u4e4b\u524d\u7248\u672c\u548c8.1\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u4e2d\u7f3a\u5c11\u8eab\u4efd\u9a8c\u8bc1\u63aa\u65bd\u6216\u8eab\u4efd\u9a8c\u8bc1\u5f3a\u5ea6\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u516c\u5f00\u975e\u516c\u5f00\u5185\u5bb9\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-12676",
  "openTime": "2020-02-18",
  "patchDescription": "Opencast\u662f\u4e00\u5957\u514d\u8d39\u7684\u5f00\u6e90\u89c6\u9891\u7ba1\u7406\u89e3\u51b3\u65b9\u6848\uff0c\u5b83\u5177\u6709\u53ef\u6269\u5c55\u3001\u53ef\u5b9a\u5236\u548c\u4f4e\u6210\u672c\u7b49\u7279\u70b9\u3002\r\n\r\nOpencast 7.6\u4e4b\u524d\u7248\u672c\u548c8.1\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u4e2d\u7f3a\u5c11\u8eab\u4efd\u9a8c\u8bc1\u63aa\u65bd\u6216\u8eab\u4efd\u9a8c\u8bc1\u5f3a\u5ea6\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u516c\u5f00\u975e\u516c\u5f00\u5185\u5bb9\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Opencast\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Opencast Opencast \u003c8.1",
      "Opencast Opencast \u003c7.6"
    ]
  },
  "referenceLink": "https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8",
  "serverity": "\u4e2d",
  "submitTime": "2020-02-14",
  "title": "Opencast\u6388\u6743\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-5206 (GCVE-0-2020-5206)

Vulnerability from cvelistv5 – Published: 2020-01-30 21:25 – Updated: 2024-08-04 08:22

Title

Authentication Bypass For Endpoints With Anonymous Access in OpenCast

Summary

In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1

Severity

8.7 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CWE

CWE-285 - Improper Authorization

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/opencast/opencast/security/adv…	x_refsource_CONFIRM
https://github.com/opencast/opencast/commit/b157e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
opencast	opencast	Affected: < 7.6 Affected: >= 8.0, < 8.1

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T08:22:08.781Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "opencast",
          "vendor": "opencast",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0, \u003c 8.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-01-30T21:25:16.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8"
        }
      ],
      "source": {
        "advisory": "GHSA-vmm6-w4cf-7f3x",
        "discovery": "UNKNOWN"
      },
      "title": "Authentication Bypass For Endpoints With Anonymous Access in OpenCast",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-5206",
          "STATE": "PUBLIC",
          "TITLE": "Authentication Bypass For Endpoints With Anonymous Access in OpenCast"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "opencast",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 7.6"
                          },
                          {
                            "version_value": "\u003e= 8.0, \u003c 8.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "opencast"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1"
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-285: Improper Authorization"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x",
              "refsource": "CONFIRM",
              "url": "https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x"
            },
            {
              "name": "https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8",
              "refsource": "MISC",
              "url": "https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-vmm6-w4cf-7f3x",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2020-5206",
    "datePublished": "2020-01-30T21:25:16.000Z",
    "dateReserved": "2020-01-02T00:00:00.000Z",
    "dateUpdated": "2024-08-04T08:22:08.781Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CNVD-2020-12676

CVE-2020-5206 (GCVE-0-2020-5206)

Tags

Sightings

Nomenclature

Related by attack behaviour