Arch Linux ASA-201605-26 Medium Severity: Libndp Man-In-The-Middle

Arch Linux Security Advisory ASA-201605-26
=========================================
Severity: Medium
Date    : 2016-05-24
CVE-ID  : CVE-2016-3698
Package : libndp
Type    : man-in-the-middle
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package libndp before version 1.6-1 is vulnerable to
man-in-the-middle attacks.

Resolution
=========
Upgrade to 1.6-1.

# pacman -Syu "libndp>=1.6-1"

The problem has been fixed upstream in version 1.6

Workaround
=========
None.

Description
==========
Libndp before version 1.6 does properly validate and check the origin of
Neighbor Discovery Protocol (NDP) messages. An attacker on a non-local
network can exploit this flaw to advertise a node as a router, which
allows them to re-route the traffic through an attacker-controlled node.

Impact
=====
A remote unauthenticated attacker is able to send specially crafted
messages to a client and act as a man-in-the-middle between the client
and a server or disrupt client traffic.

References
=========
https://access.redhat.com/security/cve/CVE-2016-3698
https://github.com/jpirko/libndp/commit/2af9a55b38b55abbf05fd116ec097d4029115839