RedHat: RHSA-2016-1086:01 Moderate: libndp security update
Summary
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.
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2016-3698 https://access.redhat.com/security/updates/classification/#moderate
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/
Topic
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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
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
Bugs Fixed
1329366 - CVE-2016-3698 libndp: denial of service due to insufficient validation of source of NDP messages