Check Point VPN-1 Power/UTM, with NGX R60 through R65 and NG AI R55 software, allows remote authenticated users to cause a denial of service (site-to-site VPN tunnel outage), and possibly intercept network traffic, by configuring the local RFC1918 IP address to be the same as one of this tunnelβs endpoint RFC1918 IP addresses, and then using SecuRemote to connect to a network interface at the other endpoint.
puresecurity.com.au/index.php?action=fullnews&id=5
secunia.com/advisories/29394
www.kb.cert.org/vuls/id/992585
www.puresecurity.com.au/files/PureSecurity%20VPN-1%20DoS_Spoofing%20Attack%20against%20VPN%20tunnels.pdf
www.securityfocus.com/bid/28299
www.securitytracker.com/id?1019666
www.vupen.com/english/advisories/2008/0953/references
exchange.xforce.ibmcloud.com/vulnerabilities/41260
supportcenter.checkpoint.com/supportcenter/portal?solutionid=sk34579