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CVE-2021-45079

Published: 24 January 2022

In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.

Priority

High

Cvss 3 Severity Score

9.1

Score breakdown

Status

Package Release Status
strongswan
Launchpad, Ubuntu, Debian
bionic
Released (5.6.2-1ubuntu2.8)
focal
Released (5.8.2-1ubuntu3.4)
hirsute Ignored
(end of life)
impish
Released (5.9.1-1ubuntu3.2)
jammy
Released (5.9.4-1ubuntu4)
kinetic
Released (5.9.4-1ubuntu4)
lunar
Released (5.9.4-1ubuntu4)
mantic
Released (5.9.4-1ubuntu4)
trusty
Released (5.1.2-0ubuntu2.11+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.9.5)
xenial
Released (5.3.5-1ubuntu3.8+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter Value
Base score 9.1
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H