pysec - pysec-2020-178

pysec-2020-178

Vulnerability from pysec

Published

2020-01-22 19:15

Modified

2020-01-30 17:07

Details

Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "waitress",
        "purl": "pkg:pypi/waitress"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "575994cd42e83fd772a5f7ec98b2c56751bd3f65"
            }
          ],
          "repo": "https://github.com/Pylons/waitress",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "0.2",
        "0.3",
        "0.4",
        "0.5",
        "0.6",
        "0.6.1",
        "0.7",
        "0.8",
        "0.8.1",
        "0.8.2",
        "0.8.3",
        "0.8.4",
        "0.8.5",
        "0.8.6",
        "0.8.7",
        "0.8.8",
        "0.8.9",
        "0.8.10",
        "0.8.11b0",
        "0.9.0b0",
        "0.9.0b1",
        "0.9.0",
        "1.0a1",
        "1.0a2",
        "1.0.0",
        "1.0.1",
        "1.0.2",
        "1.1.0",
        "1.2.0b1",
        "1.2.0b2",
        "1.2.0b3",
        "1.2.0",
        "1.2.1",
        "1.3.0b0",
        "1.3.0",
        "1.3.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2019-16792",
    "GHSA-4ppp-gpcr-7qf6",
    "GHSA-j7j6-7hfx-5522"
  ],
  "details": "Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.",
  "id": "PYSEC-2020-178",
  "modified": "2020-01-30T17:07:00Z",
  "published": "2020-01-22T19:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-j7j6-7hfx-5522"
    }
  ]
}

ghsa-4ppp-gpcr-7qf6

Vulnerability from github

Published

2019-12-20 23:04

Modified

2022-03-24 17:52

Summary

HTTP Request Smuggling: Content-Length Sent Twice in Waitress

Details

Impact

Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally.

So a request with:

Content-Length: 10 Content-Length: 10

would get transformed to:

Content-Length: 10, 10

Which would Waitress would then internally set to Content-Lenght: 0.

Waitress would then treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining.

Patches

This issue is fixed in Waitress 1.4.0. This brings a range of changes to harden Waitress against potential HTTP request confusions, and may change the behaviour of Waitress behind non-conformist proxies.

The Pylons Project recommends upgrading as soon as possible, while validating that the changes in Waitress don't cause any changes in behavior.

Workarounds

Various reverse proxies may have protections against sending potentially bad HTTP requests to the backend, and or hardening against potential issues like this. If the reverse proxy doesn't use HTTP/1.1 for connecting to the backend issues are also somewhat mitigated, as HTTP pipelining does not exist in HTTP/1.0 and Waitress will close the connection after every single request (unless the Keep Alive header is explicitly sent... so this is not a fool proof security method).

Issues/more security issues:

open an issue at https://github.com/Pylons/waitress/issues (if not sensitive or security related)
email the Pylons Security mailing list: pylons-project-security@googlegroups.com (if security related)

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "waitress"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2019-12-20T23:02:03Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nWaitress would header fold a double `Content-Length` header and due to being unable to cast the now comma separated value to an integer would set the `Content-Length` to 0 internally.\n\nSo a request with:\n\n```\nContent-Length: 10\nContent-Length: 10\n```\n\nwould get transformed to:\n\n```\nContent-Length: 10, 10\n```\n\nWhich would Waitress would then internally set to `Content-Lenght: 0`.\n\nWaitress would then treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining.\n\n### Patches\n\nThis issue is fixed in Waitress 1.4.0. This brings a range of changes to harden Waitress against potential HTTP request confusions, and may change the behaviour of Waitress behind non-conformist proxies. \n\nThe Pylons Project recommends upgrading as soon as possible, while validating that the changes in Waitress don\u0027t cause any changes in behavior.\n\n### Workarounds\n\nVarious reverse proxies may have protections against sending potentially bad HTTP requests to the backend, and or hardening against potential issues like this. If the reverse proxy doesn\u0027t use HTTP/1.1 for connecting to the backend issues are also somewhat mitigated, as HTTP pipelining does not exist in HTTP/1.0 and Waitress will close the connection after every single request (unless the Keep Alive header is explicitly sent... so this is not a fool proof security method).\n\n### Issues/more security issues:\n\n* open an issue at https://github.com/Pylons/waitress/issues (if not sensitive or security related)\n* email the Pylons Security mailing list: pylons-project-security@googlegroups.com (if security related)",
  "id": "GHSA-4ppp-gpcr-7qf6",
  "modified": "2022-03-24T17:52:19Z",
  "published": "2019-12-20T23:04:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"
    },
    {
      "type": "WEB",
      "url": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Pylons/waitress"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-j7j6-7hfx-5522"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/waitress/PYSEC-2020-178.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "HTTP Request Smuggling: Content-Length Sent Twice in Waitress"
}

ghsa-j7j6-7hfx-5522

Vulnerability from github

Published

2022-05-24 17:07

Modified

2022-06-27 16:10

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

Inconsistent Interpretation of HTTP Requests in Waitress

Details

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.3.1"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "waitress"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-16792"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-27T16:10:41Z",
    "nvd_published_at": "2020-01-22T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.",
  "id": "GHSA-j7j6-7hfx-5522",
  "modified": "2022-06-27T16:10:41Z",
  "published": "2022-05-24T17:07:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-16792"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"
    },
    {
      "type": "WEB",
      "url": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Pylons/waitress"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    }
  ],
  "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": "Inconsistent Interpretation of HTTP Requests in Waitress"
}

cve-2019-16792

Vulnerability from cvelistv5

Published

2020-01-22 18:30

Modified

2024-08-05 01:24

Severity ?

7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Summary

References

▼	URL	Tags
	https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC
	https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes	x_refsource_MISC
	https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6	x_refsource_CONFIRM
	https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	Pylons	Waitress	Version: <= 1.3.1 <

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T01:24:48.422Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"
          },
          {
            "name": "[debian-lts-announce] 20220512 [SECURITY] [DLA 3000-1] waitress security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Waitress",
          "vendor": "Pylons",
          "versions": [
            {
              "lessThanOrEqual": "1.3.1",
              "status": "affected",
              "version": "\u003c= 1.3.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
        {
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            {
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              "description": "CWE-444 Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
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              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-05-12T23:06:12",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
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          "url": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"
        },
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          "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"
        },
        {
          "name": "[debian-lts-announce] 20220512 [SECURITY] [DLA 3000-1] waitress security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html"
        }
      ],
      "source": {
        "advisory": "GHSA-4ppp-gpcr-7qf6",
        "discovery": "UNKNOWN"
      },
      "title": "HTTP Request Smuggling: Content-Length Sent Twice in Waitress",
      "x_legacyV4Record": {
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          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2019-16792",
          "STATE": "PUBLIC",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Waitress",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_name": "\u003c= 1.3.1",
                            "version_value": "1.3.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Pylons"
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        "data_format": "MITRE",
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          ]
        },
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            "attackVector": "NETWORK",
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            "baseScore": 7.1,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
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                  "lang": "eng",
                  "value": "CWE-444 Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)"
                }
              ]
            }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
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              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
              "name": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes",
              "refsource": "MISC",
              "url": "https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"
            },
            {
              "name": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6",
              "refsource": "CONFIRM",
              "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"
            },
            {
              "name": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65",
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              "url": "https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"
            },
            {
              "name": "[debian-lts-announce] 20220512 [SECURITY] [DLA 3000-1] waitress security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-4ppp-gpcr-7qf6",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2019-16792",
    "datePublished": "2020-01-22T18:30:15",
    "dateReserved": "2019-09-24T00:00:00",
    "dateUpdated": "2024-08-05T01:24:48.422Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

pysec-2020-178

Vulnerability from pysec

ghsa-4ppp-gpcr-7qf6

Vulnerability from github

Impact

Patches

Workarounds

Issues/more security issues:

ghsa-j7j6-7hfx-5522

Vulnerability from github

cve-2019-16792

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature