CVE-2023-25577 – werkzeug

Package

Manager: pip
Name: werkzeug
Vulnerable Version: >=0 <2.2.3

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00319 pctl0.54413

Details

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.

Metadata

Created: 2023-02-15T15:36:26Z
Modified: 2024-11-19T19:07:37Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-xg9f-g7g7-2323/GHSA-xg9f-g7g7-2323.json
CWE IDs: ["CWE-400", "CWE-770"]
Alternative ID: GHSA-xg9f-g7g7-2323
Finding: F067
Auto approve: 1