CVE Vulnerability

CVE-2023-25577

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.

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/pallets/werkzeug/commit/517cac5a804e8c4dc4ed038bb20dacd038e7a9f1 Patch
https://github.com/pallets/werkzeug/releases/tag/2.2.3 Release Notes
https://github.com/pallets/werkzeug/security/advisories/GHSA-xg9f-g7g7-2323 Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*
Information

Published : 2023-02-14 08:15

Updated : 2023-02-23 10:21

NVD link : CVE-2023-25577

Mitre link : CVE-2023-25577

Products Affected

Palletsprojects

Werkzeug

CWE
No CWE.