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Gentoo Linux Security Advisory GLSA 201603-13 |
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https://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: Libreswan: Multiple Vulnerabilities |
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Date: March 12, 2016 |
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Bugs: #550974, #558692 |
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ID: 201603-13 |
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|
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in libreSwan possibly |
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resulting in Denial of Service. |
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|
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Background |
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========== |
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|
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Libreswan is a free software implementation of the most widely |
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supported and standarized VPN protocol based on ("IPsec") and the |
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Internet Key Exchange ("IKE"). |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-misc/libreswan < 3.15 >= 3.15 |
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|
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Description |
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=========== |
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|
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The pluto IKE daemon in Libreswan, when built with NSS, allows remote |
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attackers to cause a Denial of Service (assertion failure and daemon |
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restart) via a zero DH g^x value in a KE payload in a IKE packet. |
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Additionally, remote attackers could cause a Denial of Service (daemon |
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restart) via an IKEv1 packet with (1) unassigned bits set in the IPSEC |
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DOI value or (2) the next payload value set to ISAKMP_NEXT_SAK. |
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|
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Impact |
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====== |
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|
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Remote attackers could possibly cause Denial of Service. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All Libreswan users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/libreswan-3.15" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2015-3204 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3204 |
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[ 2 ] CVE-2015-3240 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3240 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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|
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https://security.gentoo.org/glsa/201603-13 |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2016 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |