It was discovered that by sending crafted Router Advertisement packets, an attacker on the local network could lower the Current Hop Limit and cause the system to lose the ability to communicate with another IPv6 node on a different network.

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Debian Security Advisory DSA-3175-2                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                        Alessandro Ghedini
May 18, 2015                           http://www.debian.org/security/faq
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Package        : kfreebsd-9
CVE ID         : CVE-2015-1414 CVE-2015-2923
Debian Bug     : 779201 782735

It was discovered that by sending crafted Router Advertisement packets,
an attacker on the local network could lower the Current Hop Limit and
cause the system to lose the ability to communicate with another IPv6
node on a different network.

Additionally, it was discovered that the patch applied to kfreebsd-9 in
DSA-3175-1 for CVE-2015-1414 was incomplete. For reference the original
advisory text follows:

Mateusz Kocielski and Marek Kroemeke discovered that an integer overflow
in IGMP processing may result in denial of service through malformed
IGMP packets.

For the oldstable distribution (wheezy), these problems have been fixed
in version 9.0-10+deb70.10.

We recommend that you upgrade your kfreebsd-9 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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