CVE-2019-16789 HTTP Request Smuggling in Waitress: Invalid whitespace characters in headers

In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special...

CVE-2019-16789

Affected software: Waitress (Python WSGI server) up to version 1.4.0. Vulnerability arises when a front-end proxy sends requests with Transfer-Encoding containing invalid whitespace characters; Waitress may parse such requests as chunked while the front-end uses Content-Length, enabling HTTP requ...

CVE-2019-16789

In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special...

CVE-2019-16789

In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special...

GHSA-M5FF-3WJ3-8PH4 HTTP Request Smuggling: Invalid whitespace characters in headers in Waitress

Impact If a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Content-Length: 10 Transfer-Encoding: \x0bchunked For clarity: 0x0b == vertical...

HTTP Request Smuggling: Invalid whitespace characters in headers in Waitress

Impact If a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Content-Length: 10 Transfer-Encoding: \x0bchunked For clarity: 0x0b == vertical...

PT-2019-6234 · Waitress +3 · Waitress +3

Name of the Vulnerable Software and Affected Versions: Waitress versions 1.4.0 and earlier Description: The issue is related to the incorrect handling of special whitespace characters in the Transfer-Encoding header, which can lead to HTTP request smuggling and potentially result in cache poisoni...

HTTP Request Smuggling

waitress is vulnerable HTTP request smuggling. The vulnerability exists because the library mishandled HTTP request header by not correctly parsing the Transfer-Encoding header, causing the parser to use Content-Length header instead to determine the HTTP message body size, ignoring the requests...

CRLF Injection

waitress is vulnerable to CRLF injection. The vulnerability exists due to the different ways in which carriage returns and line feed characters are parsed in the server and the client. This cab potentially lead to HTTP request smuggling and splitting vulnerabilities...

Waitress Environmental Vulnerability (CNVD-2020-01313)

Waitress is a WSGI Web Server Gateway Interface server for Python. An environmental issue vulnerability exists in Waitress 1.3.1 and earlier versions. The vulnerability stems from an unreasonable environmental factor in a networked system or product. No detailed vulnerability details are provided...

Waitress Environmental Vulnerabilities (CNVD-2020-01314)

Waitress is a WSGI Web Server Gateway Interface server for Python. An environmental issue vulnerability exists in Waitress 1.3.1 and earlier versions. The vulnerability stems from an unreasonable environmental factor in a networked system or product. No detailed vulnerability details are provided...

CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

DEBIAN-CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

DEBIAN-CVE-2019-16786

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. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

CVE-2019-16786

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. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

CVE-2019-16786

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. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

PYSEC-2019-67

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. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

PYSEC-2019-137

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. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...