[gentoo-announce] [ GLSA 201603-13 ] Libreswan: Multiple Vulnerabilities

[news 28]

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Gentoo Linux Security Advisory GLSA 201603-13

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https://security.gentoo.org/

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Severity: Normal

Title: Libreswan: Multiple Vulnerabilities

Date: March 12, 2016

Bugs: #550974, #558692

ID: 201603-13

 

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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

=================

 

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Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-misc/libreswan < 3.15 >= 3.15

 

Description

===========

 

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.

 

Impact

======

 

Remote attackers could possibly cause Denial of Service.

 

Workaround

==========

 

There is no known workaround at this time.

 

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 ( -at -) gentoo.org or alternatively, you may file a bug at

https://bugs.gentoo.org.

 

License

=======

 

Copyright 2016 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5