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Incorrect configuration handling allows mTLS session re-use without re-validation after validation settings have changed

High
mattklein123 published GHSA-5j4x-g36v-m283 Feb 22, 2022

Package

No package listed

Affected versions

1.7.0 and later

Patched versions

1.18.6, 1.19.3, 1.20.2, 1.21.1

Description

CVSSS Score 7.3 AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

tls allows re-use when some cert validation settings have changed

Impact

Resources available to unauthorized users

Patches

Has the problem been patched? What versions should users upgrade to?

Workarounds

Do not modify TLS settings.

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

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVE ID

CVE-2022-21654

Weaknesses