Puma up to 4.3.8/5.5.0 request smuggling

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Puma up to 4.3.8/5.5.0. Affected is an unknown function. The manipulation results in request smuggling. This vulnerability is identified as CVE-2021-41136. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Puma up to 4.3.8/5.5.0. It has been classified as problematic. Affected is some unknown functionality. The manipulation with an unknown input leads to a request smuggling vulnerability. CWE is classifying the issue as CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 10/12/2021 as GHSA-48w2-rm65-62xx. The advisory is available at github.com. This vulnerability is traded as CVE-2021-41136 since 09/15/2021. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 4.3.9 or 5.5.1 eliminates this vulnerability. Applying the patch acdc3ae571dfae0e045cf09a295280127db65c7f 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.

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Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔍

CNA Base Score: 3.7
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Request smuggling
CWE: CWE-444
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: Puma 4.3.9/5.5.1
Patch: acdc3ae571dfae0e045cf09a295280127db65c7f

Timelineinfo

09/15/2021 🔍
10/12/2021 +27 days 🔍
10/12/2021 +0 days 🔍
05/27/2025 +1323 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-48w2-rm65-62xx
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-41136 (🔍)
GCVE (CVE): GCVE-0-2021-41136
GCVE (VulDB): GCVE-100-184326

Entryinfo

Created: 10/12/2021 22:20
Updated: 05/27/2025 18:35
Changes: 10/12/2021 22:20 (49), 10/15/2021 15:39 (2), 10/15/2021 15:45 (1), 05/27/2025 18:35 (33)
Complete: 🔍
Cache ID: 216::103

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