CVE-2016-5361 Information

Description

programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder states which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed UDP packet. NOTE: the original behavior complies with the IKEv1 protocol but has a required security update from the libreswan vendor; as of 2016-06-10 it is expected that several other IKEv1 implementations will have vendor-required security updates with separate CVE IDs assigned to each.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://rhn.redhat.com/errata/RHSA-2016-2603.html http://www.openwall.com/lists/oss-security/2016/06/10/4 https://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6 https://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5