Use-after-free when tunneling TCP over HTTP, if downstream disconnects during upstream connection establishment

Moderate

mattklein123 published GHSA-cmx3-fvgf-83mf

Feb 22, 2022

Package

envoy (C++)

Affected versions

1.21.0 and earlier

Patched versions

1.18.6, 1.19.3, 1.20.2, 1.21.1

Description

CVSS Score 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L

Impact

Denial of Service (Crash)

Patches

Workarounds

No.

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

Moderate

6.1

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

Required

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

Low

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