Vulnerability-Lookup

GHSA-XRR9-RH8P-433V

Vulnerability from github – Published: 2020-01-27 19:28 – Updated: 2021-01-08 20:32

Summary

Request smuggling is possible when both chunked TE and content length specified

Details

Impact

Request smuggling is possible when running behind a proxy that doesn't handle Content-Length and Transfer-Encoding properly or doesn't handle alone \n as a headers separator.

Patches

https://github.com/ktorio/ktor/pull/1547

Workarounds

None except migrating to a better proxy.

References

https://portswigger.net/web-security/request-smuggling https://tools.ietf.org/html/rfc7230#section-9.5

Severity

5.4 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.ktor:ktor-client-cio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.ktor:ktor-server-cio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-5207"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-01-27T19:28:00Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Impact\nRequest smuggling is possible when running behind a proxy that doesn\u0027t handle Content-Length and Transfer-Encoding properly or doesn\u0027t handle alone \\n as a headers separator.\n\n### Patches\nhttps://github.com/ktorio/ktor/pull/1547\n\n### Workarounds\nNone except migrating to a better proxy.\n\n### References\nhttps://portswigger.net/web-security/request-smuggling\nhttps://tools.ietf.org/html/rfc7230#section-9.5",
  "id": "GHSA-xrr9-rh8p-433v",
  "modified": "2021-01-08T20:32:37Z",
  "published": "2020-01-27T19:28:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ktorio/ktor/security/advisories/GHSA-xrr9-rh8p-433v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5207"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ktorio/ktor/pull/1547"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Request smuggling is possible when both chunked TE and content length specified"
}

CVE-2020-5207 (GCVE-0-2020-5207)

Vulnerability from cvelistv5 – Published: 2020-01-27 19:30 – Updated: 2024-08-04 08:22

Title

Request smuggling is possible in Ktor when both chunked TE and content length specified

Summary

In Ktor before 1.3.0, request smuggling is possible when running behind a proxy that doesn't handle Content-Length and Transfer-Encoding properly or doesn't handle \n as a headers separator.

Severity

5.4 (Medium)


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

CWE

CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/ktorio/ktor/security/advisorie…	x_refsource_CONFIRM
https://github.com/ktorio/ktor/pull/1547	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Ktor.io	Ktor	Affected: < 1.3.0

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-04T08:22:09.258Z",
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            ],
            "url": "https://github.com/ktorio/ktor/security/advisories/GHSA-xrr9-rh8p-433v"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/ktorio/ktor/pull/1547"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        {
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          "vendor": "Ktor.io",
          "versions": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
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            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-01-27T19:30:15.000Z",
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      },
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}

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

GHSA-XRR9-RH8P-433V

Impact

Patches

Workarounds

References

CVE-2020-5207 (GCVE-0-2020-5207)

Tags

Sightings

Nomenclature

Related by attack behaviour