strongSwan

h1. Version 5.1.1

* Fixed a denial-of-service vulnerability and potential authorization bypass

  triggered by a crafted @ID_DER_ASN1_DN@ ID payload. The cause is an insufficient

  length check when comparing such identities.  The vulnerability has been

  registered as "CVE-2013-6075":http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2013-6075.

  Refer to "our blog":http://www.strongswan.org/blog/2013/11/01/strongswan-denial-of-service-vulnerability-(cve-2013-6075).html for details.

* Fixed a denial-of-service vulnerability triggered by a crafted IKEv1

  fragmentation payload. The cause is a NULL pointer dereference. The

  vulnerability has been registered as "CVE-2013-6076":http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2013-6076.

  Refer to "our blog":http://www.strongswan.org/blog/2013/11/01/strongswan-denial-of-service-vulnerability-(cve-2013-6076).html for details.

* The lean stand-alone _pt-tls-client_ can set up a "RFC 6876":https://tools.ietf.org/html/rfc6876 PT-TLS session

  with a strongSwan policy enforcement point which uses the _tnc-pdp_ charon

  plugin.

* The new TCG TNC SWID IMC/IMV pair supports targeted SWID requests for either

  full SWID Tag or concise SWID Tag ID inventories.

* The XAuth backend in [[EAPRadius|eap-radius]] now supports multiple XAuth exchanges for

  different credential types and display messages. All user input gets

  concatenated and verified with a single User-Password RADIUS attribute on

  the AAA. With an AAA supporting it, one for example can implement

  Password+Token authentication with proper dialogs on iOS and OS X clients.

* charon supports IKEv1 Mode Config exchange in push mode. The [[ipsec.conf]]

  modeconfig=push option enables it for both client and server, the same way

  as pluto used it.

* Using the _ah_ [[ipsec.conf]] keyword on both IKEv1 and IKEv2 connections,

  charon can negotiate and install Security Associations integrity-protected by

  the Authentication Header protocol. Supported are plain <notextile>AH(+IPComp)</notextile> SAs only,

  but not the deprecated RFC 2401 style ESP+AH bundles.

* The generation of initialization vectors for IKE and ESP (when using libipsec)

  is now modularized and IVs for e.g. AES-GCM are now correctly allocated

  sequentially, while other algorithms like AES-CBC still use random IVs.

* The _left_ and _right_ options in [[ipsec.conf]] can take multiple address ranges

  and subnets. This allows connection matching against a larger set of

  addresses, for example to use a different connection for clients connecting

  from an internal network.

* For all those who have a queasy feeling about the NIST elliptic curve set,

  the Brainpool curves introduced for use with IKE by "RFC 6932":https://tools.ietf.org/html/rfc6932 might be a

  more trustworthy alternative.

* The [[kernel-libipsec]] userland IPsec backend now supports usage statistics,

  volume based rekeying and accepts ESPv3 style TFC padded packets.

* With two new [[strongswan.conf]] options _fwmarks_ can be used to implement

  [[kernel-libipsec#Host-to-Host-Tunnels|host-to-host tunnels with kernel-libipsec]].

* _libipsec_ now properly calculates padding length especially for AES-GCM.

* _load-tester_ supports transport mode connections and more complex traffic

  selectors, including such using unique ports for each tunnel.

* The new _dnscert_ plugin provides support for authentication via CERT RRs that

  are protected via DNSSEC.  The plugin was created by Ruslan N. Marchenko.

* The [[EAPRadius|eap-radius]] plugin supports forwarding of several Cisco Unity specific

  RADIUS attributes in corresponding configuration payloads.

* The [[ipsecpki|ipsec pki]] utility and its subcommands all received man pages.

  The command itself is now installed in $prefix/bin by default.  So the _ipsec_

  prefix is now optional.

* [[IpsecPkiPub|pki --pub]] is able to convert public keys to other formats (e.g. DNSKEY or SSH).

* Database transactions are now abstracted and implemented by the two backends.

  If you use MySQL make sure all tables use the InnoDB engine.

* libstrongswan now can provide an experimental custom implementation of the

  printf family functions based on klibc if neither Vstr nor glibc style printf

  hooks are available. This can avoid the Vstr dependency on some systems at

  the cost of slower and less complete printf functions.

* Handling of ICMP[v6] has been improved. For instance, traffic selectors with

  specific ICMP message type and code can now be configured in [[ipsec.conf]]

  and are properly installed in the kernel.

* IKEv1 reauthentication should be more stable with third-party peers (commit:ee99f37e, commit:d2e4dd75).

* Fixes a regression in [[5.1.0]] that caused a segmentation fault when reestablishing

  CHILD_SAs due to _closeaction=restart|hold_ (commit:e42ab08a).

* Fixes a regression in [[5.1.0]] that caused IP addresses on ignored, down or loopback

  interfaces to get ignored when searching for an address contained in the local traffic

  selector (commit:d7ae0b254).

* The calculation of the ESN bitmap length in the _kernel-netlink_ plugin was fixed (commit:e001cc2b).

* When removing configs via _stroke_ plugin (e.g. with @ipsec update/reload@) matching

  peer configs are not removed anymore, if they are still used by other child configs (commit:791fde16).

* reqids of established CHILD_SAs are reused when routing connections via _stroke_ plugin (commit:32fef0c6).

* The value for @xfrm_acq_expires@ can now be configured via [[strongswan.conf]] (commit:255b9dac).