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IPsec-Tools contains a vulnerability that allows a remote attacker to crash the IPsec tunnel.
IPsec-Tools is a port of KAME's implementation of the IPsec utilities. It contains a collection of network monitoring tools, including racoon, ping, and ping6.
The isakmp_info_recv() function in src/racoon/isakmp_inf.c does not always check that DELETE (ISAKMP_NPTYPE_D) and NOTIFY (ISAKMP_NPTYPE_N) packets are encrypted.
A remote attacker could send a specially crafted IPsec message to one of the two peers during the beginning of phase 1, resulting in the termination of the IPsec exchange.
There is no known workaround at this time.
All IPsec-Tools users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-firewall/ipsec-tools-0.6.7"
[ 1 ] CVE-2007-1841
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to firstname.lastname@example.org or alternatively, you may file a bug at http://bugs.gentoo.org.
Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
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