CVE-2025-29914: Github.com/jptosso/coraza waf OWASP Coraza WAF Has Parser Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q9f5-625g-xm39",
  "modified" : "2025-03-20T18:48:38Z",
  "published" : "2025-03-20T18:48:38Z",
  "aliases" : [ "CVE-2025-29914" ],
  "summary" : "OWASP Coraza WAF has parser confusion which leads to wrong URI in `REQUEST_FILENAME`",
  "details" : "### Summary\n\nURLs starting with `//` are not parsed properly, and the request `REQUEST_FILENAME` variable contains a wrong value, leading to potential rules bypass.\n\n### Details\n\nIf a request is made on an URI starting with `//`, coraza will set a wrong value in `REQUEST_FILENAME`.\nFor example, if the URI `//bar/uploads/foo.php?a=b` is passed to coraza: , `REQUEST_FILENAME` will be set to `/uploads/foo.php`.\n\nThe root cause is the usage of `url.Parse` to parse the URI in [ProcessURI](https://github.com/corazawaf/coraza/blob/8b612f4e6e18c606e371110227bc7669dc714cab/internal/corazawaf/transaction.go#L768).\n\n`url.Parse` can parse both absolute URLs (starting with a scheme) or relative ones (just the path). \n`//bar/uploads/foo.php` is a valid absolute URI (the scheme is empty), `url.Parse` will consider `bar` as the host and the path will be set to `/uploads/foo.php`.\n\n### PoC\n\n```go\npackage main\n\nimport (\n\t\"fmt\"\n\t\"net/url\"\n\t\"os\"\n\n\t\"github.com/corazawaf/coraza/v3\"\n)\n\nconst testRule = `\nSecDebugLogLevel 9\nSecDebugLog /dev/stdout\nSecRule REQUEST_FILENAME \"@rx /bar/uploads/.*\\.(h?ph(p|tm?l?|ar)|module|shtml)\" \"id:1,phase:1,deny\"\n`\n\nfunc main() {\n\tvar testURL = \"//bar/uploads/foo.php\"\n\n\tif os.Getenv(\"TEST_URL\") != \"\" {\n\t\ttestURL = os.Getenv(\"TEST_URL\")\n\t}\n\n\tfmt.Printf(\"Testing URL: %s\\n\", testURL)\n\n\tconfig := coraza.NewWAFConfig().WithDirectives(testRule)\n\n\twaf, err := coraza.NewWAF(config)\n\n\tif err != nil {\n\t\tpanic(err)\n\t}\n\n\ttx := waf.NewTransaction()\n\n\ttx.ProcessURI(testURL, \"GET\", \"HTTP/1.1\")\n\n\tin := tx.ProcessRequestHeaders()\n\n\tif in != nil {\n\t\tfmt.Printf(\"%+v\\n\", in)\n\t}\n}\n```\n\n### Impact\n\nPotential bypass of rules using `REQUEST_FILENAME`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/jptosso/coraza-waf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/corazawaf/coraza/v3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/corazawaf/coraza/security/advisories/GHSA-q9f5-625g-xm39"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-29914"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/corazawaf/coraza/commit/4722c9ad0d502abd56b8d6733c6b47eb4111742d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/corazawaf/coraza"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-706" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-20T18:48:38Z",
    "nvd_published_at" : "2025-03-20T18:15:18Z"
  }
}