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Red Hat Security Advisory
Synopsis: Moderate: libndp security update
Advisory ID: RHSA-2016:1086-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1086.html
Issue date: 2016-05-17
CVE Names: CVE-2016-3698
=====================================================================
1. Summary:
An update for libndp is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) – x86_64
Red Hat Enterprise Linux Client Optional (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) – ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) – x86_64
3. Description:
Libndp is a library (used by NetworkManager) that provides a wrapper for
the IPv6 Neighbor Discovery Protocol. It also provides a tool named ndptool
for sending and receiving NDP messages.
Security Fix(es):
* It was found that libndp did not properly validate and check the origin
of Neighbor Discovery Protocol (NDP) messages. An attacker on a non-local
network could use this flaw to advertise a node as a router, allowing them
to perform man-in-the-middle attacks on a connecting client, or disrupt the
network connectivity of that client. (CVE-2016-3698)
Red Hat would like to thank Julien Bernard (Viagénie) for reporting this
issue.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, all running applications using libndp (for
example, Network Manager) must be restarted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1329366 – CVE-2016-3698 libndp: denial of service due to insufficient validation of source of NDP messages
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
libndp-1.2-6.el7_2.src.rpm
x86_64:
libndp-1.2-6.el7_2.i686.rpm
libndp-1.2-6.el7_2.x86_64.rpm
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
libndp-devel-1.2-6.el7_2.i686.rpm
libndp-devel-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
libndp-1.2-6.el7_2.src.rpm
x86_64:
libndp-1.2-6.el7_2.i686.rpm
libndp-1.2-6.el7_2.x86_64.rpm
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
libndp-devel-1.2-6.el7_2.i686.rpm
libndp-devel-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
libndp-1.2-6.el7_2.src.rpm
ppc64:
libndp-1.2-6.el7_2.ppc.rpm
libndp-1.2-6.el7_2.ppc64.rpm
libndp-debuginfo-1.2-6.el7_2.ppc.rpm
libndp-debuginfo-1.2-6.el7_2.ppc64.rpm
ppc64le:
libndp-1.2-6.el7_2.ppc64le.rpm
libndp-debuginfo-1.2-6.el7_2.ppc64le.rpm
s390x:
libndp-1.2-6.el7_2.s390.rpm
libndp-1.2-6.el7_2.s390x.rpm
libndp-debuginfo-1.2-6.el7_2.s390.rpm
libndp-debuginfo-1.2-6.el7_2.s390x.rpm
x86_64:
libndp-1.2-6.el7_2.i686.rpm
libndp-1.2-6.el7_2.x86_64.rpm
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
libndp-debuginfo-1.2-6.el7_2.ppc.rpm
libndp-debuginfo-1.2-6.el7_2.ppc64.rpm
libndp-devel-1.2-6.el7_2.ppc.rpm
libndp-devel-1.2-6.el7_2.ppc64.rpm
ppc64le:
libndp-debuginfo-1.2-6.el7_2.ppc64le.rpm
libndp-devel-1.2-6.el7_2.ppc64le.rpm
s390x:
libndp-debuginfo-1.2-6.el7_2.s390.rpm
libndp-debuginfo-1.2-6.el7_2.s390x.rpm
libndp-devel-1.2-6.el7_2.s390.rpm
libndp-devel-1.2-6.el7_2.s390x.rpm
x86_64:
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
libndp-devel-1.2-6.el7_2.i686.rpm
libndp-devel-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
libndp-1.2-6.el7_2.src.rpm
x86_64:
libndp-1.2-6.el7_2.i686.rpm
libndp-1.2-6.el7_2.x86_64.rpm
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
libndp-debuginfo-1.2-6.el7_2.i686.rpm
libndp-debuginfo-1.2-6.el7_2.x86_64.rpm
libndp-devel-1.2-6.el7_2.i686.rpm
libndp-devel-1.2-6.el7_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-3698
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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