Gentoo: GLSA-201603-13: Libreswan: Multiple Vulnerabilities
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.
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
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.
![Dist Gentoo](/images/distros/dist-gentoo.png)
Synopsis
Multiple vulnerabilities have been found in libreSwan possibly resulting in Denial of Service.
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").
Affected Packages
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 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.