ghsa-f256-j965-7f32
Vulnerability from github
Published
2021-03-30 15:10
Modified
2022-02-08 21:31
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Possible request smuggling in HTTP/2 due missing validation of content-length
Details

Impact

The content-length header is not correctly validated if the request only use a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1

This is a followup of https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj which did miss to fix this one case.

Patches

This was fixed as part of 4.1.61.Final

Workarounds

Validation can be done by the user before proxy the request by validating the header.

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-codec-http2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.1.61.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 4.0.0"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.jboss.netty:netty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 4.0.0"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21409"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-03-30T15:03:26Z",
    "nvd_published_at": "2021-03-30T15:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nThe content-length header is not correctly validated if the request only use a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1\n\nThis is a followup of https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj which did miss to fix this one case. \n\n### Patches\nThis was fixed as part of 4.1.61.Final\n\n### Workarounds\nValidation can be done by the user before proxy the request by validating the header.",
  "id": "GHSA-f256-j965-7f32",
  "modified": "2022-02-08T21:31:25Z",
  "published": "2021-03-30T15:10:38Z",
  "references": [
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      "url": "https://github.com/netty/netty/security/advisories/GHSA-f256-j965-7f32"
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      "url": "https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21409"
    },
    {
      "type": "WEB",
      "url": "https://github.com/netty/netty/commit/b0fa4d5aab4215f3c22ce6123dd8dd5f38dc0432"
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  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Possible request smuggling in HTTP/2 due missing validation of content-length"
}


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