Public on 2023-07-13
Modified on 2024-04-08
Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11.
Important severity
CVSS v3 Base Score
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Ecs Extra ecs-service-connect-agent 2023-08-17 ALAS2ECS-2023-006 Fixed
Amazon Linux 2023 ecs-service-connect-agent 2023-08-17 ALAS2023-2023-300 Fixed
Amazon Linux 1 nghttp2 2023-08-03 ALAS-2023-1793 Fixed
Amazon Linux 2 - Core nghttp2 2023-08-03 ALAS2-2023-2180 Fixed
Amazon Linux 2023 nghttp2 2023-08-03 ALAS2023-2023-278 Fixed
Amazon Linux 2023 nodejs 2023-08-03 ALAS2023-2023-290 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H