CVEvulnerability

CVE-2023-35945

7.5 HIGH Published 2023-07-13 Modified 2026-10-15 Official page ↗
Status
Modified
Published
2023-07-13
Last modified
2026-10-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400, CWE-459

Description

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.

Affected configurations

• envoyproxy envoy (< 1.23.11) • envoyproxy envoy (>= 1.24.0 < 1.24.9) • envoyproxy envoy (>= 1.25.0 < 1.25.8) • envoyproxy envoy (>= 1.26.0 < 1.26.3) • nghttp2 nghttp2 (< 1.55.1)

Related

Weakness · CWE (2)

  • CWE-400 Uncontrolled Resource Consumption weakness
  • CWE-459 Incomplete Cleanup weakness

References