GLSA 201701-05: BusyBox: Denial of Service

Severity:normal
Title:BusyBox: Denial of Service
Date:01/01/2017
Bugs: #590478
ID:201701-05

Synopsis

A vulnerability in BusyBox might allow remote attackers to cause a Denial of Service condition.

Background

BusyBox is a set of tools for embedded systems and is a replacement for GNU Coreutils.

Affected packages

Package Vulnerable Unaffected Architecture(s)
sys-apps/busybox < 1.25.1 >= 1.25.1 All supported architectures

Description

The recv_and_process_client_pkt function in networking/ntpd.c in BusyBox allows remote attackers to cause a Denial of Service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop.

Impact

A remote attacker might send a specially crafted package to a machine running BusyBox ntpd, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All BusyBox users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/busybox-1.25.1"
    

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201701-05.xml

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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License

Copyright 2010 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.

Thank you!