Envoy up to 1.22.8/1.23.5/1.24.3/1.25.2 Filter Reset requests/ allocation of resources

Summaryinfo

A vulnerability categorized as problematic has been discovered in Envoy up to 1.22.8/1.23.5/1.24.3/1.25.2. This affects an unknown part of the file requests/ of the component Filter Reset Handler. Executing a manipulation can lead to allocation of resources. The identification of this vulnerability is CVE-2023-27492. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Envoy up to 1.22.8/1.23.5/1.24.3/1.25.2. This vulnerability affects an unknown functionality of the file requests/ of the component Filter Reset Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

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, the Lua filter is vulnerable to denial of service. Attackers can send large request bodies for routes that have Lua filter enabled and trigger crashes. As of versions versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy no longer invokes the Lua coroutine if the filter has been reset. As a workaround for those whose Lua filter is buffering all requests/ responses, mitigate by using the buffer filter to avoid triggering the local reply in the Lua filter.

The weakness was shared 04/05/2023 as GHSA-wpc2-2jp6-ppg2. The advisory is available at github.com. This vulnerability was named CVE-2023-27492 since 03/01/2023. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

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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