Headline
RHSA-2023:3440: Red Hat Security Advisory: Red Hat OpenStack Platform 17.0 (python-flask) security update
An update for python-flask is now available for Red Hat OpenStack Platform 17.0 (Wallaby). Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
Related CVEs:
- CVE-2023-30861: A flaw was found in the Python Flask package. A cached response may contain data for one client sent by a proxy to other clients, including session cookies, resulting in the compromise of data confidentiality contained in the leak requests or cookies. This happens when the following conditions are met by the proxy’s behavior regarding cookies and the application’s behavior session usage:
- The caching proxy does not strip or ignore response with cookies
- The application sets a permanent session
- The application does not access or modify the session during requests
- SESSION_REFRESH_EACH_REQUEST is enabled, which is the default Flask behavior
- The application does not set the Cache-Control header to avoid being cached
Issued:
2023-06-05
Updated:
2023-06-05
RHSA-2023:3440 - Security Advisory
- Overview
- Updated Packages
Synopsis
Important: Red Hat OpenStack Platform 17.0 (python-flask) security update
Type/Severity
Security Advisory: Important
Red Hat Insights patch analysis
Identify and remediate systems affected by this advisory.
View affected systems
Topic
An update for python-flask is now available for Red Hat OpenStack Platform
17.0 (Wallaby).
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Description
Flask is called a “micro-framework” because the idea to keep the core
simple but extensible. There is no database abstraction layer, no form
validation or anything else where different libraries already exist that
can handle that. However Flask knows the concept of extensions that can add
this functionality into your application as if it was implemented in Flask
itself. There are currently extensions for object relational mappers, form
validation, upload handling, various open authentication technologies and
more.
Security Fix(es):
- Possible disclosure of permanent session cookie due to missing Vary:
Cookie header (CVE-2023-30861)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page listed in the References section.
Affected Products
- Red Hat OpenStack 17 x86_64
Fixes
- BZ - 2196643 - CVE-2023-30861 flask: Possible disclosure of permanent session cookie due to missing Vary: Cookie header
Red Hat OpenStack 17
SRPM
python-flask-1.1.2-6.el9ost.src.rpm
SHA-256: bc2bbee83b7bf0249a4c0a7d4523f625c4f0b92018fe7f7eeefb45030e993978
x86_64
python3-flask-1.1.2-6.el9ost.noarch.rpm
SHA-256: 37270136869a05308a6f5b67a3411808249b8be01fb94a85bd42ac5763b8a39d
The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.
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Red Hat Security Advisory 2023-3440-01 - An update for python-flask is now available for Red Hat OpenStack Platform 17.0 (Wallaby).
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Red Hat Security Advisory 2023-3446-01 - An update for python-flask is now available for Red Hat OpenStack Platform 16.1 (Train).
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