python: cpython: tarfile: ReDos via excessive backtracking while parsing header values

A regular expression denial of service ReDos vulnerability was found in Python's tarfile module. Due to excessive backtracking while tarfile parses headers, an attacker may be able to trigger a denial of service via a specially crafted tar archive...

python-urllib3: ReDoS in the parsing of authority part of URL

A flaw was found in python-urllib3. When provided with a URL containing many @ characters in the authority component, the authority's regular expression exhibits catastrophic backtracking. This flaw causes a denial of service if a URL is passed as a parameter or redirected via an HTTP redirect. T...