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Insecure Library Loading
Moderately critical

IPsec-Tools Two Denial of Service Vulnerabilities

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Release Date:  2008-08-13    Last Update:  2009-05-11    Views:  8,415

Secunia Advisory SA31478

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Two vulnerabilities have been reported in IPsec-Tools, which can be exploited by malicious people to cause a DoS (Denial of Service).

1) The racoon daemon improperly deletes orphaned phase 1 handlers when acting as a responder. This can be exploited to cause high resource consumption via invalid packets.

2) An NULL-pointer dereference error within the "isakmp_frag_extract()" function in racoon/isakmp_frag.c can be exploited to cause a crash.

Successful exploitation of this vulnerability requires that fragmentation support is enabled.

The vulnerabilities are reported in versions prior to 0.7.2.


Solution:
Update to version 0.7.2.

Provided and/or discovered by:
1) Krzysztof Piotr Oledzk
2) The vendor credits Neil Kettle.

Original Advisory:
1) http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp.c.diff?r1=1.20.6.11&r2=1.20.6.12&f=h
http://sourceforge.net/mailarchive/forum.php?thread_name=48a0c7a0.qPeWZAE0PY8bDDq%2B%25olel%40ans.pl&forum_name=ipsec-tools-devel

2) http://sourceforge.net/mailarchive/forum.php?thread_name=20090422151825.GB46988%40zeninc.net&forum_name=ipsec-tools-announce
http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c?f=h#rev1.4.6.1

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: IPsec-Tools Two Denial of Service Vulnerabilities

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