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RHSA-2023:3446: Red Hat Security Advisory: Red Hat OpenStack Platform 16.1 (python-flask) security update

An update for python-flask is now available for Red Hat OpenStack Platform 16.1 (Train). 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:
  1. The caching proxy does not strip or ignore response with cookies
  2. The application sets a permanent session
  3. The application does not access or modify the session during requests
  4. SESSION_REFRESH_EACH_REQUEST is enabled, which is the default Flask behavior
  5. The application does not set the Cache-Control header to avoid being cached
Red Hat Security Data
#vulnerability#red_hat#auth#ibm

Issued:

2023-06-05

Updated:

2023-06-05

RHSA-2023:3446 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: Red Hat OpenStack Platform 16.1 (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
16.1 (Train).

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 for IBM Power 16.1 ppc64le
  • Red Hat OpenStack 16.1 x86_64

Fixes

  • BZ - 2196643 - CVE-2023-30861 flask: Possible disclosure of permanent session cookie due to missing Vary: Cookie header

Red Hat OpenStack for IBM Power 16.1

SRPM

python-flask-1.0.2-8.el8ost.src.rpm

SHA-256: 717546dc4d39494b83b4a068902512d977facac591cbb706810e42e9ca982826

ppc64le

python3-flask-1.0.2-8.el8ost.noarch.rpm

SHA-256: 42a2ea35bc5537e8649fafe0a1fffde1b00f3281c9702583eb4078006ae7cd13

Red Hat OpenStack 16.1

SRPM

python-flask-1.0.2-8.el8ost.src.rpm

SHA-256: 717546dc4d39494b83b4a068902512d977facac591cbb706810e42e9ca982826

x86_64

python3-flask-1.0.2-8.el8ost.noarch.rpm

SHA-256: 42a2ea35bc5537e8649fafe0a1fffde1b00f3281c9702583eb4078006ae7cd13

The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.

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