ghsa-9wxc-375c-cvq2
Vulnerability from github
Published
2021-11-23 00:00
Modified
2021-11-27 00:00
Details

The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains "^/internal/", a URI like //internal/ can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer's custom plugin.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-43557"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-11-22T09:15:00Z",
    "severity": "HIGH"
  },
  "details": "The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains \"^/internal/\", a URI like `//internal/` can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer\u0027s custom plugin.",
  "id": "GHSA-9wxc-375c-cvq2",
  "modified": "2021-11-27T00:00:25Z",
  "published": "2021-11-23T00:00:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43557"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/11/22/1"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/11/22/2"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/11/23/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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