cnvd - cnvd-2021-27803

cnvd-2021-27803

Vulnerability from cnvd

Title: OAuth2 Proxy访问控制错误漏洞

Description:

OAuth2 Proxy是一款能够提供与Google、Github或其他提供商进行身份验证的反向代理。

OAuth2 Proxy存在访问控制错误漏洞，该漏洞源于授权都没有受到限制。目前没有详细漏洞细节提供。

Severity: 中

Patch Name: OAuth2 Proxy访问控制错误漏洞的补丁

Patch Description:

OAuth2 Proxy是一款能够提供与Google、Github或其他提供商进行身份验证的反向代理。

OAuth2 Proxy存在访问控制错误漏洞，该漏洞源于授权都没有受到限制。目前没有详细漏洞细节提供。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/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-21411

Impacted products

Name
OAuth2 Proxy OAuth2-Proxy >=7.0.0，<7.1.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21411",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-21411"
    }
  },
  "description": "OAuth2 Proxy\u662f\u4e00\u6b3e\u80fd\u591f\u63d0\u4f9b\u4e0eGoogle\u3001Github\u6216\u5176\u4ed6\u63d0\u4f9b\u5546\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u7684\u53cd\u5411\u4ee3\u7406\u3002\n\nOAuth2 Proxy\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6388\u6743\u90fd\u6ca1\u6709\u53d7\u5230\u9650\u5236\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-27803",
  "openTime": "2021-04-11",
  "patchDescription": "OAuth2 Proxy\u662f\u4e00\u6b3e\u80fd\u591f\u63d0\u4f9b\u4e0eGoogle\u3001Github\u6216\u5176\u4ed6\u63d0\u4f9b\u5546\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u7684\u53cd\u5411\u4ee3\u7406\u3002\r\n\r\nOAuth2 Proxy\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6388\u6743\u90fd\u6ca1\u6709\u53d7\u5230\u9650\u5236\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "OAuth2 Proxy\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "OAuth2 Proxy OAuth2-Proxy \u003e=7.0.0\uff0c\u003c7.1.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21411",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-01",
  "title": "OAuth2 Proxy\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-21411 (GCVE-0-2021-21411)

Vulnerability from cvelistv5

Published

2021-03-26 20:55

Modified

2024-08-03 18:09

Severity ?

5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

CWE

CWE-863 - Incorrect Authorization

Summary

OAuth2-Proxy is an open source reverse proxy that provides authentication with Google, Github or other providers. The `--gitlab-group` flag for group-based authorization in the GitLab provider stopped working in the v7.0.0 release. Regardless of the flag settings, authorization wasn't restricted. Additionally, any authenticated users had whichever groups were set in `--gitlab-group` added to the new `X-Forwarded-Groups` header to the upstream application. While adding GitLab project based authorization support in #630, a bug was introduced where the user session's groups field was populated with the `--gitlab-group` config entries instead of pulling the individual user's group membership from the GitLab Userinfo endpoint. When the session groups where compared against the allowed groups for authorization, they matched improperly (since both lists were populated with the same data) so authorization was allowed. This impacts GitLab Provider users who relies on group membership for authorization restrictions. Any authenticated users in your GitLab environment can access your applications regardless of `--gitlab-group` membership restrictions. This is patched in v7.1.0. There is no workaround for the Group membership bug. But `--gitlab-project` can be set to use Project membership as the authorization checks instead of groups; it is not broken.

References

▼	URL	Tags
	https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7	x_refsource_MISC
	https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-652x-m2gr-hppm	x_refsource_CONFIRM
	https://github.com/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc	x_refsource_MISC
	https://docs.gitlab.com/ee/user/group/	x_refsource_MISC
	https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.1.0	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	oauth2-proxy	oauth2-proxy	Version: >= 7.0.0, < 7.1.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:09:16.000Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-652x-m2gr-hppm"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://docs.gitlab.com/ee/user/group/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.1.0"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "oauth2-proxy",
          "vendor": "oauth2-proxy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OAuth2-Proxy is an open source reverse proxy that provides authentication with Google, Github or other providers. The `--gitlab-group` flag for group-based authorization in the GitLab provider stopped working in the v7.0.0 release. Regardless of the flag settings, authorization wasn\u0027t restricted. Additionally, any authenticated users had whichever groups were set in `--gitlab-group` added to the new `X-Forwarded-Groups` header to the upstream application. While adding GitLab project based authorization support in #630, a bug was introduced where the user session\u0027s groups field was populated with the `--gitlab-group` config entries instead of pulling the individual user\u0027s group membership from the GitLab Userinfo endpoint. When the session groups where compared against the allowed groups for authorization, they matched improperly (since both lists were populated with the same data) so authorization was allowed. This impacts GitLab Provider users who relies on group membership for authorization restrictions. Any authenticated users in your GitLab environment can access your applications regardless of `--gitlab-group` membership restrictions. This is patched in v7.1.0. There is no workaround for the Group membership bug. But `--gitlab-project` can be set to use Project membership as the authorization checks instead of groups; it is not broken."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-26T20:55:14",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-652x-m2gr-hppm"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.gitlab.com/ee/user/group/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.1.0"
        }
      ],
      "source": {
        "advisory": "GHSA-652x-m2gr-hppm",
        "discovery": "UNKNOWN"
      },
      "title": "Incorrect authorization in OAuth2-Proxy",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-21411",
          "STATE": "PUBLIC",
          "TITLE": "Incorrect authorization in OAuth2-Proxy"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "oauth2-proxy",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e= 7.0.0, \u003c 7.1.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "oauth2-proxy"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "OAuth2-Proxy is an open source reverse proxy that provides authentication with Google, Github or other providers. The `--gitlab-group` flag for group-based authorization in the GitLab provider stopped working in the v7.0.0 release. Regardless of the flag settings, authorization wasn\u0027t restricted. Additionally, any authenticated users had whichever groups were set in `--gitlab-group` added to the new `X-Forwarded-Groups` header to the upstream application. While adding GitLab project based authorization support in #630, a bug was introduced where the user session\u0027s groups field was populated with the `--gitlab-group` config entries instead of pulling the individual user\u0027s group membership from the GitLab Userinfo endpoint. When the session groups where compared against the allowed groups for authorization, they matched improperly (since both lists were populated with the same data) so authorization was allowed. This impacts GitLab Provider users who relies on group membership for authorization restrictions. Any authenticated users in your GitLab environment can access your applications regardless of `--gitlab-group` membership restrictions. This is patched in v7.1.0. There is no workaround for the Group membership bug. But `--gitlab-project` can be set to use Project membership as the authorization checks instead of groups; it is not broken."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-863 Incorrect Authorization"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7",
              "refsource": "MISC",
              "url": "https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7"
            },
            {
              "name": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-652x-m2gr-hppm",
              "refsource": "CONFIRM",
              "url": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-652x-m2gr-hppm"
            },
            {
              "name": "https://github.com/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc",
              "refsource": "MISC",
              "url": "https://github.com/oauth2-proxy/oauth2-proxy/commit/0279fa7dff1752f1710707dbd1ffac839de8bbfc"
            },
            {
              "name": "https://docs.gitlab.com/ee/user/group/",
              "refsource": "MISC",
              "url": "https://docs.gitlab.com/ee/user/group/"
            },
            {
              "name": "https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.1.0",
              "refsource": "MISC",
              "url": "https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.1.0"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-652x-m2gr-hppm",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-21411",
    "datePublished": "2021-03-26T20:55:14",
    "dateReserved": "2020-12-22T00:00:00",
    "dateUpdated": "2024-08-03T18:09:16.000Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted