This is a security release:
- In Waitress version 1.4.2 a new regular expression was added to validate the
headers that Waitress receives to make sure that it matches RFC7230.
Unfortunately the regular expression was written in a way that with invalid
input it leads to catastrophic backtracking which allows for a Denial of
Service and CPU usage going to a 100%.
Signed-off-by: Pierre-Jean Texier <pjtexier@koncepto.io>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
