python-werkzeug: open redirect via double slash in the URL

Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.

Regular Expression Denial of Service (ReDoS)

This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.

python-werkzeug: insufficient debugger PIN randomness vulnerability

Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness because Docker containers share the same machine id.

In Pallets Werkzeug before 0.15.5, SharedDataMiddleware mishandles drive names (such as C:) in Windows pathnames.

python-jinja2: str.format_map allows sandbox escape

In Pallets Jinja before 2.10.1, str.format_map allows a sandbox escape.

python-flask: unexpected memory usage can lead to denial of service via crafted encoded JSON data

The Pallets Project Flask before 1.0 is affected by: unexpected memory usage. The impact is: denial of service. The attack vector is: crafted encoded JSON data. The fixed version is: 1. NOTE: this may overlap CVE-2018-1000656.

python-flask: Denial of Service via crafted JSON file

The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount of memory usage possibly leading to denial of service. This attack appear to be exploitable via Attacker provides JSON data in incorrect encoding. This vulnerability appears to have been fixed in 0.12.3. NOTE: this may overlap CVE-2019-1010083.

python-jinja2: Sandbox escape due to information disclosure via str.format

In Pallets Jinja before 2.8.1, str.format allows a sandbox escape.