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CVE-2019-16785

Status Candidate

Overview

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 server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This issue is fixed in Waitress 1.4.0.

Related Files

Red Hat Security Advisory 2021-0420-01
Posted Feb 4, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0420-01 - Quay 3.4.0 release. Issues addressed include HTTP request smuggling, buffer overflow, information leakage, integer overflow, out of bounds read, and out of bounds write vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2019-16785, CVE-2019-16786, CVE-2019-16789, CVE-2019-19911, CVE-2019-20477, CVE-2019-3866, CVE-2020-10177, CVE-2020-10378, CVE-2020-10379, CVE-2020-10994, CVE-2020-11538, CVE-2020-14040, CVE-2020-5310, CVE-2020-5311, CVE-2020-5312, CVE-2020-5313, CVE-2020-8131
SHA-256 | fc1c021d43cf16f4b5a7a35f8b5247813c911163c4070cc206c22b06869fb2c6
Red Hat Security Advisory 2020-0720-01
Posted Mar 5, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-0720-01 - Waitress is a pure Python WSGI server which supports HTTP/1.0 and HTTP/1.1. HTTP request smuggling was addressed.

tags | advisory, web, python
systems | linux, redhat
advisories | CVE-2019-16785, CVE-2019-16786, CVE-2019-16789
SHA-256 | 073ff936845e6edb0602084d9e603169e0a3bf734795afc24cfafdd36ab033e2
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