CVE-2022-21655

Published: Feb 22, 2022Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. The envoy common router will segfault if an internal redirect selects a route configured with direct response or redirect actions. This will result in a denial of service. As a workaround turn off internal redirects if direct response entries are configured on the same listener.

Affected (4)

Products: Envoyproxy: Envoy

1 product

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Envoyproxy Envoy	Before 1.18.6
Envoyproxy Envoy	From 1.19.0 to 1.19.3
Envoyproxy Envoy	From 1.20.0 to 1.20.2
Envoyproxy Envoy	From 1.21.0 to 1.21.1

Related CWEs

Always-Incorrect Control Flow Implementation

The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.

References (4)

https://github.com/envoyproxy/envoy/commit/177d608155ba8b11598b9bbf8240e90d8c350682

Source: security-advisories@github.com

PatchThird Party Advisory

https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg

Source: security-advisories@github.com

Issue TrackingThird Party Advisory

https://github.com/envoyproxy/envoy/commit/177d608155ba8b11598b9bbf8240e90d8c350682

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingThird Party Advisory

Timeline

No history available yet.