CVE-2023-35945

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

13/07/2023

Last modified:

24/10/2023

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:envoyproxy:envoy::::::::		1.23.11 (excluding)
cpe:2.3:a:envoyproxy:envoy::::::::	1.24.0 (including)	1.24.9 (excluding)
cpe:2.3:a:envoyproxy:envoy::::::::	1.25.0 (including)	1.25.8 (excluding)
cpe:2.3:a:envoyproxy:envoy::::::::	1.26.0 (including)	1.26.3 (excluding)
cpe:2.3:a:nghttp2:nghttp2::::::::		1.55.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-35945

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools