Envoy is an open source edge and service proxy, designed for cloud-native applications. Sending a locally generated response must stop further processing of request or response data. Envoy tracks the amount of buffered request and response data and aborts the request if the amount of buffered data is over the limit by sending 413 or 500 responses. However when the buffer overflows while response is processed by the filter chain the operation may not be aborted correctly and result in accessing a freed memory block. If this happens Envoy will crash resulting in a denial of service.
History

Wed, 23 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-02-22T22:45:12.000Z

Updated: 2025-04-23T19:01:15.613Z

Reserved: 2021-11-16T00:00:00.000Z

Link: CVE-2021-43825

cve-icon Vulnrichment

Updated: 2024-08-04T04:03:08.802Z

cve-icon NVD

Status : Modified

Published: 2022-02-22T23:15:10.890

Modified: 2024-11-21T06:29:52.517

Link: CVE-2021-43825

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-02-22T07:00:00Z

Links: CVE-2021-43825 - Bugzilla