CVE-2022-40617

Publication date 3 October 2022

Last updated 18 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.

Status

Package Ubuntu Release Status
strongswan 25.10 questing
Fixed 5.9.6-1ubuntu2
25.04 plucky
Fixed 5.9.6-1ubuntu2
24.10 oracular
Fixed 5.9.6-1ubuntu2
24.04 LTS noble
Fixed 5.9.6-1ubuntu2
23.10 mantic
Fixed 5.9.6-1ubuntu2
23.04 lunar
Fixed 5.9.6-1ubuntu2
22.10 kinetic
Fixed 5.9.6-1ubuntu2
22.04 LTS jammy
Fixed 5.9.5-2ubuntu2.1
20.04 LTS focal
Fixed 5.8.2-1ubuntu3.5
18.04 LTS bionic
Fixed 5.6.2-1ubuntu2.9
16.04 LTS xenial
Fixed 5.3.5-1ubuntu3.8+esm3
14.04 LTS trusty
Fixed 5.1.2-0ubuntu2.11+esm3

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Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5651-1
    • strongSwan vulnerability
    • 3 October 2022
    • USN-5651-2
    • strongSwan vulnerability
    • 3 October 2022

Other references