quagga - security update

The quagga package installs world readable sensitive files in /etc/quagga,
and might be subject to denial of service because of lacking packet size
checks.

• CVE-2016-4036
  The quagga package before 0.99.23-2.6.1 uses weak permissions for
  /etc/quagga, which allows local users to obtain sensitive information
  by reading files in the directory.
• CVE-2016-4049
  The bgp_dump_routes_func function in bgpd/bgp_dump.c in Quagga does
  not perform size checks when dumping data, which might allow remote
  attackers to cause a denial of service (assertion failure and daemon
  crash) via a large BGP packet.

For Debian 7 Wheezy, these problems have been fixed in version
0.99.22.4-1+wheezy3.

We recommend that you upgrade your quagga packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;