PPTPD is a Point-to-Point Tunnelling Protocol Daemon for Linux.
James Cameron from HP has reported a vulnerability in PPTPD caused by malformed GRE packets.
A remote attacker could exploit this vulnerability to cause a Denial of Service on the PPTPD connection.
There is no known workaround at this time.
All PPTPD users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dialup/pptpd-1.3.4"