RHSA-2023:3525 - Security Advisory

Topic

An update for python-flask is now available for Red Hat Enterprise Linux 7 Extras.

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 a lightweight but extensible web development framework for Python based on the Werkzeug WSGI toolkit, and the Jinja 2 template engine.

Security Fix(es):

• flask: 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(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

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

CVEs

• CVE-2023-30861

References

• https://access.redhat.com/security/updates/classification/#important