VDB-187918 · CVE-2021-43797 · GHSA-wx5j-54mm-rqqq

Netty prior 4.1.7.1.Final Control Char request smuggling

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Netty. Impacted is an unknown function of the component Control Char Handler. Executing a manipulation can lead to request smuggling. This vulnerability appears as CVE-2021-43797. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Netty. It has been declared as critical. This vulnerability affects an unknown part of the component Control Char 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 12/09/2021 as GHSA-wx5j-54mm-rqqq. The advisory is available at github.com. This vulnerability was named CVE-2021-43797 since 11/16/2021. The technical details are unknown and an exploit is not available.

Upgrading to version 4.1.7.1.Final eliminates this vulnerability. Applying the patch 07aa6b5938a8b6ed7a6586e066400e2643897323 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

Netty

License

open-source

Website

Product: https://github.com/netty/netty/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Netty 4.1.7.1.Final
Patch: 07aa6b5938a8b6ed7a6586e066400e2643897323

Timelineinfo

11/16/2021 🔍
12/09/2021 +23 days 🔍
12/09/2021 +0 days 🔍
12/15/2021 +6 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-wx5j-54mm-rqqq
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43797 (🔍)
GCVE (CVE): GCVE-0-2021-43797
GCVE (VulDB): GCVE-100-187918

Entryinfo

Created: 12/09/2021 22:30
Updated: 12/15/2021 13:53
Changes: 12/09/2021 22:30 (50), 12/15/2021 13:47 (2), 12/15/2021 13:53 (1)
Complete: 🔍
Cache ID: 216::103