TITLE:
IPsec-Tools ISAKMP IKE Message Processing Denial of Service

SECUNIA ADVISORY ID:
SA17668

VERIFY ADVISORY:
http://secunia.com/advisories/17668/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
IPsec-Tools 0.x
http://secunia.com/product/3352/

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

The vulnerability is caused due to a NULL pointer dereferencing error
when processing certain ISAKMP packets in aggressive mode.

The vulnerability is related to:
SA17553

Successful exploitation requires a weak racoon configuration (e.g. no
lifetime proposal or obey mode), and using 3DES/SHA1/DH2.

SOLUTION:
Update to version 0.6.3.
http://sourceforge.net/project/showfiles.php?group_id=74601&package_id=74949&release_id=372605

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Adrian Portelli.

ORIGINAL ADVISORY:
http://sourceforge.net/mailarchive/forum.php?thread_id=9017454&forum_id=32000
http://sourceforge.net/project/shownotes.php?release_id=372605&group_id=74601

OTHER REFERENCES:
SA17553:
http://secunia.com/advisories/17553/

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