Arch Linux 201601-7 Medium Severity: dhcpcd Denial Of Service

Arch Linux Security Advisory ASA-201601-7
========================================
Severity: Medium
Date    : 2016-01-11
CVE-ID  : CVE-2016-1503 CVE-2016-1504
Package : dhcpcd
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package dhcpcd before version 6.10.0-1 is vulnerable to denial of
service.

Resolution
=========
Upgrade to 6.10.0-1.

# pacman -Syu "dhcpcd>=6.10.0-1"

The problem has been fixed upstream in version 6.10.0.

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

Description
==========
- CVE-2016-1503 (denial of service)

An issue has been discovered that can lead to a heap overflow via
malformed dhcp responses later in print_option (via dhcp_envoption1) due
to incorrect option length values.

- CVE-2016-1504 (denial of service)

A malformed dhcp response can lead to an invalid read/crash leading to
denial of service.

Impact
=====
A remote attacker is able to send specially crafted packets leading to
application crash resulting in denial of service.

References
=========
https://www.cve.org/CVERecord?id=CVE-2016-1503
https://www.cve.org/CVERecord?id=CVE-2016-1504