Gentoo: GLSA-201603-13 Normal: Libreswan Denial of Service Issue
gentoo
March 13, 2016
Multiple vulnerabilities have been found in libreSwan possibly resulting in Denial of Service.
Summary
The pluto IKE daemon in Libreswan, when built with NSS, allows remote attackers to cause a Denial of Service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet. Additionally, remote attackers could cause a Denial of Service (daemon restart) via an IKEv1 packet with (1) unassigned bits set in the IPSEC DOI value or (2) the next payload value set to ISAKMP_NEXT_SAK.
Topics Covered
Resolution
All Libreswan users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/libreswan-3.15"
References
[ 1 ] CVE-2015-3204 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3204 [ 2 ] CVE-2015-3240 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3240
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201603-13
style>.gentoo_availability{display:block;}
Concerns
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 security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
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Severity: Normal
Title: Libreswan: Multiple Vulnerabilities
Date: March 12, 2016
Bugs: #550974, #558692
ID: 201603-13
Topics Covered
Background
Libreswan is a free software implementation of the most widely
supported and standarized VPN protocol based on ("IPsec") and the
Internet Key Exchange ("IKE").
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Affected Packages
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Package / Vulnerable / Unaffected
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1 net-misc/libreswan < 3.15 >= 3.15
Impact
=====
Remote attackers could possibly cause Denial of Service.
Workaround
There is no known workaround at this time.
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