Ubuntu 5651-1: strongSwan vulnerability | LinuxSecurity.com
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Ubuntu Security Notice USN-5651-1
October 03, 2022

strongswan vulnerability
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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

Ubuntu 5651-1: strongSwan vulnerability

October 3, 2022

Summary

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

Severity
Ubuntu Security Notice USN-5651-1

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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