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RHSA-2023:1018: Red Hat Security Advisory: Red Hat OpenStack Platform 17.0 (python-werkzeug) security update

An update for python-werkzeug 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-2023-25577: A flaw was found in python-werkzeug. Werkzeug is multipart form data parser, that will parse an unlimited number of parts, including file parts. These parts can be a small amount of bytes, but each requires CPU time to parse, and may use more memory as Python data. If a request can be made to an endpoint that accesses request.data, request.form, request.files, or request.get_data(parse_form_data=False), it can cause unexpectedly high resource usage, allowing an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests, and if many concurrent requests are sent continuously, this can exhaust or kill all available workers.
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All Products

Issued:

2023-02-28

Updated:

2023-02-28

RHSA-2023:1018 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: Red Hat OpenStack Platform 17.0 (python-werkzeug) 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-werkzeug 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

Werkzeug ======== Werkzeug started as simple collection of various
utilities for WSGI applications and has become one of the most advanced
WSGI utility modules. It includes a powerful debugger, full featured
request and response objects, HTTP utilities to handle entity tags, cache
control headers, HTTP dates, cookie handling, file uploads, a powerful URL
routing system and a bunch of community contributed addon modules. Werkzeug
is unicode aware and doesn’t enforce a specific template engine, database
adapter or anything else. It doesn’t even enforce a specific way of
handling requests and leaves all that up to the developer. It’s most useful
for end user applications which should work on as many server environments
as possible (such as blogs, wikis, bulletin boards, etc.).

Security Fix(es):

  • high resource usage when parsing multipart form data with many fields

(CVE-2023-25577)

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 - 2170242 - CVE-2023-25577 python-werkzeug: high resource usage when parsing multipart form data with many fields

Red Hat OpenStack 17

SRPM

python-werkzeug-2.0.1-5.el9ost.src.rpm

SHA-256: 4141d4f2bab3d44ed059e5a4cf9ef90834c9d63b78a26ad7c8857da2fb4b5bed

x86_64

python3-werkzeug-2.0.1-5.el9ost.noarch.rpm

SHA-256: 99f61653b13e5d4b2c80657504738cd2b1ad4c66eed109a30172ea536127f2ce

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

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GHSA-xg9f-g7g7-2323: High resource usage when parsing multipart form data with many fields

Werkzeug's multipart form data parser will parse an unlimited number of parts, including file parts. Parts can be a small amount of bytes, but each requires CPU time to parse and may use more memory as Python data. If a request can be made to an endpoint that accesses `request.data`, `request.form`, `request.files`, or `request.get_data(parse_form_data=False)`, it can cause unexpectedly high resource usage. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. The amount of RAM required can trigger an out of memory kill of the process. Unlimited file parts can use up memory and file handles. If many concurrent requests are sent continuously, this can exhaust or kill all available workers.

CVE-2023-25577: Merge pull request from GHSA-xg9f-g7g7-2323 · pallets/werkzeug@517cac5

Werkzeug is a comprehensive WSGI web application library. Prior to version 2.2.3, Werkzeug's multipart form data parser will parse an unlimited number of parts, including file parts. Parts can be a small amount of bytes, but each requires CPU time to parse and may use more memory as Python data. If a request can be made to an endpoint that accesses `request.data`, `request.form`, `request.files`, or `request.get_data(parse_form_data=False)`, it can cause unexpectedly high resource usage. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. The amount of RAM required can trigger an out of memory kill of the process. Unlimited file parts can use up memory and file handles. If many concurrent requests are sent continuously, this can exhaust or kill all available workers. Version 2.2.3 contains a patch for this issue.