Envoy up to 1.22.8/1.23.5/1.24.3/1.25.2 Pipelined Request input validation

Summaryinfo

A vulnerability classified as critical has been found in Envoy up to 1.22.8/1.23.5/1.24.3/1.25.2. This issue affects some unknown processing of the component Pipelined Request Handler. This manipulation causes input validation. This vulnerability is registered as CVE-2023-27493. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Envoy up to 1.22.8/1.23.5/1.24.3/1.25.2. Affected by this vulnerability is some unknown processing of the component Pipelined Request Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy does not sanitize or escape request properties when generating request headers. This can lead to characters that are illegal in header values to be sent to the upstream service. In the worst case, it can cause upstream service to interpret the original request as two pipelined requests, possibly bypassing the intent of Envoy’s security policy. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. As a workaround, disable adding request headers based on the downstream request properties, such as downstream certificate properties.

The weakness was published 04/05/2023 as GHSA-w5w5-487h-qv8q. The advisory is shared at github.com. This vulnerability is known as CVE-2023-27493 since 03/01/2023. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 1.22.9, 1.23.6, 1.24.4, 1.25.3 or 1.26.0 eliminates this vulnerability.

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Productinfo

Name

• Envoy

Version

• 1.22.0
• 1.22.1
• 1.22.2
• 1.22.3
• 1.22.4
• 1.22.5
• 1.22.6
• 1.22.7
• 1.22.8
• 1.23.0
• 1.23.1
• 1.23.2
• 1.23.3
• 1.23.4
• 1.23.5
• 1.24.0
• 1.24.1
• 1.24.2
• 1.24.3
• 1.25.0
• 1.25.1
• 1.25.2

License

• free

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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