USN-6488-1: strongSwan vulnerability

Releases

• Ubuntu 23.10
• Ubuntu 23.04
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• strongswan - IPsec VPN solution

Details

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.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 23.10

• libstrongswan - 5.9.11-1ubuntu1.1
• strongswan - 5.9.11-1ubuntu1.1

Ubuntu 23.04

• libstrongswan - 5.9.8-3ubuntu4.1
• strongswan - 5.9.8-3ubuntu4.1

Ubuntu 22.04

• libstrongswan - 5.9.5-2ubuntu2.2
• strongswan - 5.9.5-2ubuntu2.2

Ubuntu 20.04

• libstrongswan - 5.8.2-1ubuntu3.6
• strongswan - 5.8.2-1ubuntu3.6

In general, a standard system update will make all the necessary changes.

References

• CVE-2023-41913

Related notices

• USN-6488-2: strongswan-plugin-xauth-pam, libcharon-standard-plugins, strongswan-swanctl, libstrongswan, strongswan-plugin-eap-aka-3gpp2, strongswan-plugin-eap-dynamic, strongswan-plugin-openssl, libstrongswan-extra-plugins, strongswan-ikev2, strongswan-plugin-eap-sim-pcsc, strongswan-plugin-xauth-eap, strongswan-plugin-eap-simaka-reauth, strongswan-scepclient, strongswan-plugin-eap-aka, strongswan-plugin-kernel-libipsec, strongswan-plugin-gcrypt, strongswan-plugin-eap-mschapv2, strongswan-plugin-error-notify, strongswan-plugin-duplicheck, strongswan-plugin-curl, strongswan, strongswan-plugin-whitelist, strongswan-plugin-systime-fix, strongswan-ikev1, strongswan-charon, strongswan-plugin-pubkey, strongswan-starter, strongswan-plugin-farp, strongswan-plugin-eap-md5, strongswan-plugin-sqlite, strongswan-plugin-soup, strongswan-plugin-lookip, strongswan-plugin-eap-tnc, strongswan-plugin-pgp, strongswan-plugin-eap-simaka-pseudonym, strongswan-plugin-certexpire, strongswan-plugin-eap-tls, strongswan-plugin-agent, strongswan-plugin-sshkey, strongswan-plugin-dnscert, strongswan-plugin-xauth-generic, strongswan-plugin-attr-sql, strongswan-plugin-eap-radius, strongswan-tnc-client, strongswan-tnc-server, strongswan-plugin-dhcp, strongswan-plugin-eap-peap, strongswan-plugin-radattr, strongswan-plugin-unity, strongswan-plugin-sql, strongswan-plugin-eap-gtc, strongswan-plugin-fips-prf, strongswan-plugin-ldap, strongswan-plugin-mysql, strongswan-plugin-gmp, strongswan-nm, strongswan-plugin-eap-ttls, strongswan-plugin-led, libcharon-extra-plugins, strongswan-plugin-ntru, strongswan-plugin-dnskey, strongswan-plugin-pkcs11, strongswan-plugin-xauth-noauth, strongswan-pki, strongswan-plugin-af-alg, strongswan-plugin-eap-sim, strongswan-tnc-base, strongswan-plugin-unbound, strongswan-plugin-load-tester, libstrongswan-standard-plugins, strongswan-plugin-coupling, strongswan-ike, strongswan-plugin-eap-sim-file, strongswan-plugin-eap-simaka-sql, strongswan-tnc-pdp, strongswan-libcharon, charon-systemd, strongswan-tnc-ifmap, strongswan-plugin-ipseckey, charon-cmd