Netty up to 4.1.43 HttpObjectDecoder.java HTTP Header request smuggling

Summaryinfo

A vulnerability, which was classified as critical, has been found in Netty up to 4.1.43. This impacts an unknown function of the file HttpObjectDecoder.java. This manipulation as part of HTTP Header causes request smuggling. This vulnerability is handled as CVE-2019-20444. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Netty up to 4.1.43 and classified as critical. Affected by this vulnerability is an unknown functionality of the file HttpObjectDecoder.java. The manipulation as part of a HTTP Header 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, and integrity. The summary by CVE is:

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

The weakness was released 01/29/2020. This vulnerability is known as CVE-2019-20444 since 01/29/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 4.1.44 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2020-0302). Entry connected to this vulnerability is available at VDB-149522. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Netty

Version

• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.1.8
• 4.1.9
• 4.1.10
• 4.1.11
• 4.1.12
• 4.1.13
• 4.1.14
• 4.1.15
• 4.1.16
• 4.1.17
• 4.1.18
• 4.1.19
• 4.1.20
• 4.1.21
• 4.1.22
• 4.1.23
• 4.1.24
• 4.1.25
• 4.1.26
• 4.1.27
• 4.1.28
• 4.1.29
• 4.1.30
• 4.1.31
• 4.1.32
• 4.1.33
• 4.1.34
• 4.1.35
• 4.1.36
• 4.1.37
• 4.1.38
• 4.1.39
• 4.1.40
• 4.1.41
• 4.1.42
• 4.1.43

Website

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

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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