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Category:   Application (VPN)  >   strongSwan Vendors:
strongSwan IKE_SA_INIT Null Pointer Dereference Lets Remote Users Deny Service
SecurityTracker Alert ID:  1020903
SecurityTracker URL:
CVE Reference:   CVE-2008-4551   (Links to External Site)
Updated:  Oct 16 2008
Original Entry Date:  Sep 22 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): prior to 4.2.7
Description:   A vulnerability was reported in strongSwan. A remote user can cause denial of service conditions.

A remote user can send a specially crafted IKE_SA_INIT message to trigger a null pointer dereference in the mpz_export() function and cause the target service to crash.

The vendor was notified on September 16, 2008.

Mu Dynamics research team reported this vulnerability.

The original advisory is available at:

Impact:   A remote user can cause the target service to crash.
Solution:   The vendor has issued a fixed version (4.2.7).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:   Linux (Any), UNIX (Any)

Message History:   None.

 Source Message Contents

Date:  Mon, 22 Sep 2008 09:17:00 -0400
Subject:  strongSwan IKEv2 Denial-of-Service Vulnerability [MU-200809-01]

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