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TITLE:
strongSwan IKEv2 Daemon Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA31963

VERIFY ADVISORY:
http://secunia.com/advisories/31963/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
strongSwan 4.x
http://secunia.com/advisories/product/19901/

DESCRIPTION:
A vulnerability has been reported in strongSwan, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to a NULL-pointer dereference error
in the IKEv2 "charon" daemon. This can be exploited to terminate the
daemon via a specially crafted IKE_SA_INIT message.

The vulnerability is reported in versions prior to 4.2.7.

SOLUTION:
Update to version 4.2.7.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Mu Dynamics Research Labs.

ORIGINAL ADVISORY:
strongSwan:
http://download.strongswan.org/CHANGES4.txt
http://wiki.strongswan.org/changeset/4345

Mu Dynamics:
http://labs.mudynamics.com/advisories/MU-200809-01.txt

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