Rapid7 Vulnerability & Exploit Database

Huawei EulerOS: CVE-2019-16786: python-waitress security update

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Huawei EulerOS: CVE-2019-16786: python-waitress security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
12/20/2019
Created
09/01/2020
Added
08/31/2020
Modified
08/31/2020

Description

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 the inner-most encoding first, followed by any further transfer codings, ending with chunked. Requests 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. This could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining. This issue is fixed in Waitress 1.4.0.

Solution(s)

  • huawei-euleros-2_0_sp8-upgrade-python2-waitress

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;