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Auto-merge PR#2964
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CVE Team 2019-12-20 18:00:31 -05:00 committed by GitHub
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{
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2019-16786",
"STATE": "PUBLIC",
"TITLE": "HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Waitress",
"version": {
"version_data": [
{
"version_affected": "<=",
"version_name": "<= 1.3.1",
"version_value": "1.3.1"
}
]
}
}
]
},
"vendor_name": "Pylons"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead.\n\nAccording to the HTTP standard Transfer-Encoding should be a comma separated list, with the inner-most encoding first, followed by any further transfer codings, ending with chunked.\n\nRequests sent with: \"Transfer-Encoding: gzip, chunked\" would incorrectly get ignored, and the request would use a Content-Length header instead to determine the body size of the HTTP message.\n\nThis could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining.\n\nThis issue is fixed in Waitress 1.4.0."
}
]
},
"impact": {
"cvss": {
"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"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/Pylons/waitress/security/advisories/GHSA-g2xc-35jw-c63p",
"refsource": "CONFIRM",
"url": "https://github.com/Pylons/waitress/security/advisories/GHSA-g2xc-35jw-c63p"
},
{
"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/commit/f11093a6b3240fc26830b6111e826128af7771c3",
"refsource": "MISC",
"url": "https://github.com/Pylons/waitress/commit/f11093a6b3240fc26830b6111e826128af7771c3"
}
]
},
"source": {
"advisory": "GHSA-g2xc-35jw-c63p",
"discovery": "UNKNOWN"
}
}