Apache Traffic Server up to 6.2.3/7.1.8/8.0.5 Chunked Encoding request smuggling

Summaryinfo

A vulnerability labeled as critical has been found in Apache Traffic Server up to 6.2.3/7.1.8/8.0.5. Affected is an unknown function of the component Chunked Encoding Handler. Executing a manipulation can lead to request smuggling. This vulnerability appears as CVE-2019-17565. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Apache Traffic Server up to 6.2.3/7.1.8/8.0.5. It has been declared as critical. This vulnerability affects an unknown part of the component Chunked Encoding 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. CVE summarizes:

There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and chunked encoding. Upgrade to versions 7.1.9 and 8.0.6 or later versions.

The weakness was presented 03/23/2020. This vulnerability was named CVE-2019-17565 since 10/14/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 257925 (Linux Distros Unpatched Vulnerability : CVE-2019-17565), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.1.9 or 8.0.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (257925). See VDB-152007 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Apache

Name

• Traffic Server

Version

• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4
• 7.1.5
• 7.1.6
• 7.1.7
• 7.1.8
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.0.5

License

• open-source

Website

• Vendor: https://www.apache.org/

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Entryinfo

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

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