Advisory Published

USN-6488-1: strongSwan vulnerability

First published: Mon Nov 20 2023(Updated: )

Florian Picca discovered that strongSwan incorrectly handled certain DH public values. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libstrongswan<5.9.11-1ubuntu1.1
5.9.11-1ubuntu1.1
=23.10
All of
ubuntu/strongswan<5.9.11-1ubuntu1.1
5.9.11-1ubuntu1.1
=23.10
All of
ubuntu/libstrongswan<5.9.8-3ubuntu4.1
5.9.8-3ubuntu4.1
=23.04
All of
ubuntu/strongswan<5.9.8-3ubuntu4.1
5.9.8-3ubuntu4.1
=23.04
All of
ubuntu/libstrongswan<5.9.5-2ubuntu2.2
5.9.5-2ubuntu2.2
=22.04
All of
ubuntu/strongswan<5.9.5-2ubuntu2.2
5.9.5-2ubuntu2.2
=22.04
All of
ubuntu/libstrongswan<5.8.2-1ubuntu3.6
5.8.2-1ubuntu3.6
=20.04
All of
ubuntu/strongswan<5.8.2-1ubuntu3.6
5.8.2-1ubuntu3.6
=20.04

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