CVE Database›Document archive›CVE-2016-5361

CVE-2016-5361

IKEv1 protocol is vulnerable to DoS amplification attack

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Severity

Moderate

Red Hat Product Security

5

CVSS 2.0

Review impact separately from score.

Published · March 14, 2016

Updated · November 21, 2025

Description

A traffic amplification flaw was found in the Internet Key Exchange version 1 (IKEv1) protocol. A remote attacker could use a libreswan server with IKEv1 enabled in a network traffic amplification denial of service attack against other hosts on the network by sending UDP packets with a spoofed source address to that server.

Statement

This is a protocol flaw which affects IKEv1. All complaint implementations are therefore affected by this flaw. Red Hat Product Security team, does not consider IKEv2 to be affected. For more details please refer to https://bugzilla.redhat.com/show_bug.cgi?id=1308508#c2

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 5
AV:N/AC:L/Au:N/C:N/I:N/A:P

CWE not specified