Vulnerability-Lookup

GSD-2020-25613

Vulnerability from gsd - Updated: 2020-09-29 00:00

Details

WEBrick was too tolerant against an invalid Transfer-Encoding header. This may lead to inconsistent interpretation between WEBrick and some HTTP proxy servers, which may allow the attacker to "smuggle" a request. See CWE-444 in detail.

Aliases

CVE-2020-25613

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2020-25613",
    "description": "An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.",
    "id": "GSD-2020-25613",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-25613.html",
      "https://access.redhat.com/errata/RHSA-2022:0582",
      "https://access.redhat.com/errata/RHSA-2022:0581",
      "https://access.redhat.com/errata/RHSA-2021:2588",
      "https://access.redhat.com/errata/RHSA-2021:2587",
      "https://access.redhat.com/errata/RHSA-2021:2584",
      "https://access.redhat.com/errata/RHSA-2021:2230",
      "https://access.redhat.com/errata/RHSA-2021:2229",
      "https://access.redhat.com/errata/RHSA-2021:2104",
      "https://ubuntu.com/security/CVE-2020-25613",
      "https://advisories.mageia.org/CVE-2020-25613.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-25613.html",
      "https://linux.oracle.com/cve/CVE-2020-25613.html"
    ]
  },
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      "remediation": "unknown",
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      ],
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      "title": "Potential HTTP Request Smuggling Vulnerability in WEBrick",
      "url": "https://www.ruby-lang.org/en/news/2020/09/29/http-request-smuggling-cve-2020-25613/"
    },
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          ],
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          "description": "An issue was discovered in Ruby WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.",
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          ],
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        }
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}

CVE-2020-25613 (GCVE-0-2020-25613)

Vulnerability from cvelistv5 – Published: 2020-10-06 00:00 – Updated: 2024-08-04 15:33

Summary

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

8 references

URL	Tags
https://hackerone.com/reports/965267
https://www.ruby-lang.org/en/news/2020/09/29/http…
https://github.com/ruby/webrick/commit/8946bb38b4…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2021011…
https://lists.debian.org/debian-lts-announce/2023…	mailing-list
https://security.gentoo.org/glsa/202401-27	vendor-advisory

Show details on NVD website

JSON

To clipboard

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GHSA-GWFG-CQMG-CF8F

Vulnerability from github – Published: 2022-05-24 17:30 – Updated: 2025-05-29 23:03

Summary

WEBRick vulnerable to HTTP Request/Response Smuggling

Details

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
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      "package": {
        "ecosystem": "RubyGems",
        "name": "webrick"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.6.0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.0"
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "webrick"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.5.0"
            },
            {
              "fixed": "1.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.0"
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "webrick"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-25613"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-03-08T19:59:16Z",
    "nvd_published_at": "2020-10-06T13:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.",
  "id": "GHSA-gwfg-cqmg-cf8f",
  "modified": "2025-05-29T23:03:56Z",
  "published": "2022-05-24T17:30:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25613"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/webrick/commit/076ac636bf48b7a492887ce4de7041de23e6c00d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/webrick/commit/7618049fa57ddad2efff2a7bc7dad7d2d8a311b1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/webrick/commit/8946bb38b4d87549f0d99ed73c62c41933f97cc7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/webrick/commit/af2efdcdf826f25592202d187c53963e7932e4b9"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/965267"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ruby/webrick"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2020-25613.yml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PFP3E7KXXT3H3KA6CBZPUOGA5VPFARRJ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTZURYROG3FFED3TYCQOBV66BS4K6WOV"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PFP3E7KXXT3H3KA6CBZPUOGA5VPFARRJ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YTZURYROG3FFED3TYCQOBV66BS4K6WOV"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202401-27"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210115-0008"
    },
    {
      "type": "WEB",
      "url": "https://www.ruby-lang.org/en/news/2020/09/29/http-request-smuggling-cve-2020-25613"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "WEBRick vulnerable to HTTP Request/Response Smuggling"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GSD-2020-25613

CVE-2020-25613 (GCVE-0-2020-25613)

GHSA-GWFG-CQMG-CF8F

Tags

Sightings

Nomenclature

Related by attack behaviour