========================================================================== Ubuntu Security Notice USN-5651-1 October 03, 2022
strongswan vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: strongSwan could be made do denial of service if it received a specially crafted certificate. Software Description: - strongswan: IPsec VPN solution Details: Lahav Schlesinger discovered that strongSwan incorrectly handled certain OCSP URIs and and CRL distribution points (CDP) in certificates. A remote attacker could possibly use this issue to initiate IKE_SAs and send crafted certificates that contain URIs pointing to servers under their control, which can lead to a denial-of-service attack. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: libstrongswan 5.9.5-2ubuntu2.1 strongswan 5.9.5-2ubuntu2.1 Ubuntu 20.04 LTS: libstrongswan 5.8.2-1ubuntu3.5 strongswan 5.8.2-1ubuntu3.5 Ubuntu 18.04 LTS: libstrongswan 5.6.2-1ubuntu2.9 strongswan 5.6.2-1ubuntu2.9 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5651-1 CVE-2022-40617 Package Information: https://launchpad.net/ubuntu/+source/strongswan/5.9.5-2ubuntu2.1 https://launchpad.net/ubuntu/+source/strongswan/5.8.2-1ubuntu3.5 https://launchpad.net/ubuntu/+source/strongswan/5.6.2-1ubuntu2.9
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