It was discovered that there was a integer signedness error in the miniupnpc UPnP client that could allow remote attackers to cause a denial of service attack.

For Debian 8 Jessie, this problem has been fixed in version 1.9.20140610-2+deb8u2.

We recommend that you upgrade your miniupnpc 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