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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-04-04T18:34:44.470Z

Updated: 2024-08-02T12:16:35.324Z

Reserved: 2023-03-01T19:03:56.634Z

Link: CVE-2023-27492

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-04-04T19:15:07.217

Modified: 2024-11-21T07:53:00.940

Link: CVE-2023-27492

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-04-04T19:00:00Z

Links: CVE-2023-27492 - Bugzilla