opensuse-su-2020:1911-1
Vulnerability from csaf_opensuse
Published
2020-11-14 05:25
Modified
2020-11-14 05:25
Summary
Security update for python-waitress

Notes

Title of the patch
Security update for python-waitress
Description of the patch
This update for python-waitress to 1.4.3 fixes the following security issues: - CVE-2019-16785: HTTP request smuggling through LF vs CRLF handling (bsc#1161088). - CVE-2019-16786: HTTP request smuggling through invalid Transfer-Encoding (bsc#1161089). - CVE-2019-16789: HTTP request smuggling through invalid whitespace characters (bsc#1160790). - CVE-2019-16792: HTTP request smuggling by sending the Content-Length header twice (bsc#1161670). This update was imported from the SUSE:SLE-15:Update update project.
Patchnames
openSUSE-2020-1911
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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          "text": "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.",
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