GHSA-2HFJ-CXW7-G45P高危已审查

Unsafe inline XSS in pasting DOM element into chat

OSV 1.4.0 · github-reviewed · 修改于 2022-01-05 02:54

发布时间

2021-12-15 05:48

GitHub 审查时间

2021-12-15 04:16

NVD 发布时间

2021-12-15 04:15

源文件

advisories/github-reviewed/2021/12/GHSA-2hfj-cxw7-g45p/GHSA-2hfj-cxw7-g45p.json

公告说明

Impact

Inline scripts are executed when Javascript is parsed via a paste action.

Open https://watch.owncast.online/
Copy and then paste <img src=null onerror=alert('hello')> into the chat field.
An alert should pop up.

Patches

    ⋮ 13 │    // Content security policy
    ⋮ 14 │    csp := []string{
    ⋮ 15 │        "script-src 'self' 'sha256-2HPCfJIJHnY0NrRDPTOdC7AOSJIcQyNxzUuut3TsYRY='",
    ⋮ 16 │        "worker-src 'self' blob:", // No single quotes around blob:
    ⋮ 17 │    }

Will be patched in 0.0.9 by blocking unsafe-inline Content Security Policy and specifying the script-src. The worker-src is required to be set to blob for the video player.

For more information

If you have any questions or comments about this advisory:

Open an issue in owncast/owncast
Email us at [email protected]

受影响的软件包

标识信息

别名 / CVE

CVE-2021-39183

CWE

CWE-79

软件生态

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

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

原始 OSV JSON

{
  "id": "GHSA-2hfj-cxw7-g45p",
  "aliases": [
    "CVE-2021-39183"
  ],
  "details": "### Impact\n\nInline scripts are executed when Javascript is parsed via a paste action.\n\n1. Open https://watch.owncast.online/\n2. Copy and then paste `<img src=null onerror=alert('hello')>` into the\nchat field.\n3. An alert should pop up.\n\n### Patches\n```\n    ⋮ 13 │    // Content security policy\n    ⋮ 14 │    csp := []string{\n    ⋮ 15 │        \"script-src 'self' 'sha256-2HPCfJIJHnY0NrRDPTOdC7AOSJIcQyNxzUuut3TsYRY='\",\n    ⋮ 16 │        \"worker-src 'self' blob:\", // No single quotes around blob:\n    ⋮ 17 │    }\n```\n\nWill be patched in 0.0.9 by blocking `unsafe-inline` Content Security Policy and specifying the `script-src`.  The `worker-src` is required to be set to `blob` for the video player.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [owncast/owncast](https://github.com/owncast/owncast/issues)\n* Email us at [[email protected]](mailto:[email protected])\n",
  "summary": "Unsafe inline XSS in pasting DOM element into chat",
  "affected": [
    {
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.9"
            }
          ]
        }
      ],
      "package": {
        "name": "github.com/owncast/owncast",
        "ecosystem": "Go"
      }
    }
  ],
  "modified": "2022-01-04T18:54:05Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L"
    }
  ],
  "published": "2021-12-14T21:48:16Z",
  "references": [
    {
      "url": "https://github.com/owncast/owncast/security/advisories/GHSA-2hfj-cxw7-g45p",
      "type": "WEB"
    },
    {
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39183",
      "type": "ADVISORY"
    },
    {
      "url": "https://github.com/owncast/owncast",
      "type": "PACKAGE"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": "2021-12-14T20:15:00Z",
    "github_reviewed_at": "2021-12-14T20:16:10Z"
  }
}