Incorrect handling of internal redirects to routes with a direct response entry

High

mattklein123 published GHSA-7r5p-7fmh-jxpg

Feb 22, 2022

Package

envoy (c++)

Affected versions

V1.21.0 and earlier

Patched versions

1.18.6, 1.19.3, 1.20.2, 1.21.1

Description

common router: envoy will segfault if route selected in result of internal redirect is direct_response

CVSS Score 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, High

Impact

Denial of Service (Crash)

Patches

Workarounds

Turn off internal redirects if direct response entries are configured on the same listener.

References

https://blog.envoyproxy.io
https://github.com/envoyproxy/envoy/releases

For more information

Open an issue in Envoy repo
Email us at envoy-security

Severity

High

7.5

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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