CVE-2023-25577

python3-werkzeug: Werkzeug is a comprehensive WSGI web application library

CVE-2023-25577 is fixed in 3 products on 1 platform, first by python-werkzeug 0.14.1+dfsg1-1ubuntu0.2, released February 14, 2023. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0142
72nd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
python-werkzeug · Debian 12.15 (bookworm) 2.2.2-3 DEBIAN-CVE-2023-25577 Feb 14, 2023
python-werkzeug · Debian 13.5 (trixie) 2.2.2-3 DEBIAN-CVE-2023-25577 Feb 14, 2023
python-werkzeug · Debian 14 2.2.2-3 DEBIAN-CVE-2023-25577 Feb 14, 2023
python-werkzeug · Ubuntu 18.04.6 LTS (bionic) 0.14.1+dfsg1-1ubuntu0.2 python-werkzeug 0.14.1+dfsg1-1ubuntu0.2 Feb 14, 2023
python3-werkzeug · Ubuntu 18.04.6 LTS (bionic) 0.14.1+dfsg1-1ubuntu0.2 python3-werkzeug 0.14.1+dfsg1-1ubuntu0.2 Feb 14, 2023
python3-werkzeug · Ubuntu 20.04 LTS (focal) 0.16.1+dfsg1-2ubuntu0.1 python3-werkzeug 0.16.1+dfsg1-2ubuntu0.1 Feb 14, 2023
python3-werkzeug · Ubuntu 22.04.1 LTS (jammy) 2.0.2+dfsg1-1ubuntu0.22.04.1 python3-werkzeug 2.0.2+dfsg1-1ubuntu0.22.04.1 Feb 14, 2023
python3-werkzeug · amzn 2023 1.0.1-5.amzn2023.0.3 ALAS2023-2023-125 Mar 6, 2023
python3-werkzeug · ol 8 0:0.12.2-4.0.1.el8 ELSA-2023-12709 Aug 6, 2023
python3-werkzeug-doc · amzn 2023 1.0.1-5.amzn2023.0.3 ALAS2023-2023-125 Mar 6, 2023

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