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Version 4.3.1

  • The nm plugin now passes DNS/NBNS server information to NetworkManager,
    allowing a gateway administrator to set DNS/NBNS configuration on clients
    dynamically.
  • The nm plugin also accepts CA certificates for gateway authentication. If
    a CA certificate is configured, strongSwan uses the entered gateway address
    as its idenitity, requiring the gateways certificate to contain the same as
    subjectAltName. This allows a gateway administrator to deploy the same
    certificates to Windows 7 and NetworkManager clients.
  • The command ipsec purgeike deletes IKEv2 SAs that don't have a CHILD SA.
    The command ipsec down <conn>{n} deletes CHILD SA instance n of connection
    <conn> whereas ipsec down <conn>{*} deletes all CHILD SA instances.
    The command ipsec down <conn>[n] deletes IKE SA instance n of connection
    <conn> plus dependent CHILD SAs whereas ipsec down <conn>[*] deletes all
    IKE SA instances of connection <conn>.
  • Fixed a regression introduced in 4.3.0 where EAP authentication calculated
    the AUTH payload incorrectly. Further, the EAP-MSCHAPv2 MSK key derivation
    has been updated to be compatible with the Windows 7 Release Candidate.
  • Refactored installation of triggering policies. Routed policies are handled
    outside of IKE_SAs to keep them installed in any case. A tunnel gets
    established only once, even if initiation is delayed due network outages.
  • Improved the handling of multiple acquire signals triggered by the kernel.
  • Fixed two DoS vulnerabilities in the charon daemon that were discovered by
    fuzzing techniques: 1) Sending a malformed IKE_SA_INIT request leaved an
    incomplete state which caused a null pointer dereference if a subsequent
    CREATE_CHILD_SA request was sent. 2) Sending an IKE_AUTH request with either
    a missing TSi or TSr payload caused a null pointer derefence because the
    checks for TSi and TSr were interchanged. The IKEv2 fuzzer used was
    developped by the Orange Labs vulnerability research team. The tool was
    initially written by Gabriel Campana and is now maintained by Laurent Butti.
  • Added support for AES counter mode in ESP in IKEv2 using the proposal
    keywords aes128ctr, aes192ctr and aes256ctr.
  • Further progress in refactoring pluto: Use of the curl and ldap plugins
    for fetching crls and OCSP. Use of the random plugin to get keying material
    from /dev/random or /dev/urandom. Use of the openssl plugin as an alternative
    to the aes, des, sha1, sha2, and md5 plugins. The blowfish, twofish, and
    serpent encryption plugins are now optional and are not enabled by default.