Pallets Werkzeug up to 3.0.0 Multipart denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Pallets Werkzeug up to 3.0.0. The impacted element is an unknown function of the component Multipart Handler. Such manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2023-46136. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Pallets Werkzeug up to 3.0.0. Affected by this issue is an unknown functionality of the component Multipart Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. 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. This vulnerability has been patched in version 3.0.1.

The weakness was disclosed 10/25/2023 as GHSA-hrfv-mqp8-q5rw. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-46136 since 10/16/2023. There are neither technical details nor an exploit publicly available.

Upgrading to version 3.0.1 eliminates this vulnerability. Applying the patch f3c803b3ade485a45f12b6d6617595350c0f03e2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 8.0
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Werkzeug 3.0.1
Patch: f3c803b3ade485a45f12b6d6617595350c0f03e2

Timelineinfo

10/16/2023 🔍
10/25/2023 +9 days 🔍
10/25/2023 +0 days 🔍
11/15/2023 +21 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-hrfv-mqp8-q5rw
Status: Confirmed

CVE: CVE-2023-46136 (🔍)
GCVE (CVE): GCVE-0-2023-46136
GCVE (VulDB): GCVE-100-243272

Entryinfo

Created: 10/25/2023 11:23
Updated: 11/15/2023 17:33
Changes: 10/25/2023 11:23 (43), 11/15/2023 17:33 (21)
Complete: 🔍
Cache ID: 216::103

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