Netty prior 4.1.60.Final Content-Length Header request smuggling

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

A vulnerability has been found in Netty and classified as critical. This vulnerability affects an unknown functionality of the component Content-Length Header Handler. The manipulation with an unknown input leads to a request smuggling vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 03/10/2021. The advisory is available at github.com. This vulnerability was named CVE-2021-21295. The technical details are unknown and an exploit is not available.

Upgrading to version 4.1.60.Final eliminates this vulnerability. Applying a patch 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.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Request smuggling
CWE: CWE-444
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Netty 4.1.60.Final
Patch: github.com

Timelineinfo

12/22/2020 🔍
03/10/2021 +78 days 🔍
03/10/2021 +0 days 🔍
03/29/2021 +19 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-21295 (🔍)

Entryinfo

Created: 03/10/2021 09:50
Updated: 03/29/2021 15:40
Changes: 03/10/2021 09:50 (37), 03/29/2021 15:34 (6), 03/29/2021 15:40 (8)
Complete: 🔍

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